Subaru Legacy/Outback

1999-2003 of release

Repair and operation of the car



Subaru of Legasi, Autbek
+ Cars Subaru Legacy, Outback
+ Operation manual
+ Routine maintenance
+ Engine
+ Cooling systems, heating
+ Power supply system and release
+ Electric equipment of the engine
+ Manual box and differential
+ Automatic transmission
+ Coupling
- Brake system
   Specifications
   Brake mechanisms of lobbies and back wheels - the general information
   The parking brake - a design and the principle of functioning
   Pressure valve limiter - a design and the principle of functioning
   Antiretractable system - the device, the principle of functioning and a precautionary measure
   System of anti-blocking of brakes (ABS) - the general information, the principle of functioning
   System of dynamic stabilization (VDC) - the general information, the principle of functioning
   Check of a state replacement of blocks of disk brake mechanisms of forward wheels
   Removal, check of a state and installation of forward brake disks
   Removal, service and installation of disk brake mechanisms of forward wheels
   Check of a state and replacement of blocks of disk brake mechanisms of back wheels
   Removal, check of a state and installation of back brake disks
   Removal, service and installation of disk brake mechanisms of back wheels
   Removal, service and installation of the main brake cylinder (MBC)
   Removal, installation and check of serviceability of functioning of the vacuum amplifier of brakes
   Removal, installation and check of serviceability of functioning of the valve limiter of pressure
   Replacement of brake fluid
   Pumping of a hydraulic path of brake system
   Check of a state and replacement of flexible brake hoses
   Check of a state and replacement of tubes of a brake path
   Removal, service, installation and adjustment of a pedal of a foot brake
   Removal, check of a state, installation and adjustment of the sensor switch of stoplights
   Removal, installation, check of a state and adjustment of the lever of the drive of the parking brake
   Removal, check of a state and installation of elements of the hummock drive of the parking brake
   Removal, installation and adjustment of the mechanism of the parking brake
   Removal, installation, check of a state and adjustment of components of the antiretractable device
   Removal, installation and check of serviceability of functioning of assembly of the module of the ABS management/hydromodulator
   Check of sequence of operation of valves of the ABS hydromodulator
   Removal, installation and check of serviceability of functioning of forward wheel ABS sensors
   Removal, installation and check of serviceability of functioning of back wheel ABS sensors
   Removal, installation and check of a condition of rotors of wheel sensors
   Removal, installation and diagnostics of the sensor of overloads (G-sensor)
   Problem diagnostics of ABS
   Removal, installation and adjustment of the module of management of VDC
   Removal, installation and check of serviceability of functioning of the VDC hydromodulator
   Check of sequence of operation of valves of ABS and VDC hydromodulators
   Removal, installation and check of serviceability of functioning of the sensor of withdrawal / cross overloads
   Removal, installation and check of serviceability of functioning of the sensor of an angle of rotation of a steering wheel of VDC
   Removal, installation and check of serviceability of functioning of wheel sensors with rotors
   Removal, installation and check of serviceability of functioning of the switch of deactivation of VDC (VDC OFF)
   Problem diagnostics of VDC
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment




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Problem diagnostics of VDC

 The description of diagnostic checks is provided for a case of performance of diagnostics without application of SSM.


Refusals of control lamps

Break or short circuit in a chain of its electrical wiring can be a cause of failures of functioning of a control lamp.


Any of control lamps (ABS/VDC)/alarm of indicators (an active state or deactivation of VDC) it is not activated at ignition inclusion

 More than 10-second squeezing of the VDC OFF switch in the course of a provorachivaniye of the engine leads to shutdown of the alarm indicator "VDC OFF", - for return to the initial mode it is necessary to switch off and again to include ignition.


Try to include ignition, without making start of the engine, - if the other, being a part combinations of devices, control lamps work regularly, pass to the following stage of check, otherwise it is necessary to make the necessary recovery device of an instrument guard.

Switch off ignition. Remove a combination of devices, take the corresponding control lamp and check its state. If the lamp fused, make its replacement, otherwise pass to the following stage of check.

If a lamp as it should be, disunite the contact F87 socket of the module of management of VDC. Include ignition and measure tension between the mass of the chassis (-) and the plus plug No. 54 (a control lamp of ABS)/53 (a control lamp of VDC)/32 (the light indicator of operation of VDC)/52 (the light indicator of shutdown of VDC) of the F87 socket. If the result of measurement makes less than 3 V, pass to the following stage of check, otherwise, check a condition of an electrical wiring of the corresponding control lamp. Make necessary recovery repair.

Switch off ignition, put the checked control lamp on the regular place and establish a combination of devices.

Lay a sheet of paper 1.5 mm thick in area of the sensor switch of the contact socket of the module of management of VDC, include ignition and repeat the check described above. If the result of measurement does not exceed the limit of the range of 10 ÷ 15 V, pass to the following tap of check, otherwise check a condition of an electrical wiring. Make necessary recovery repair.

Switch off ignition and check serviceability of a condition of contact sockets on a chain site between a combination of devices and the module of management of VDC, - if signs of violation of reliability of contacts are absent, replace the module of management.

Control lamps of ABS and VDC are not disconnected after implementation of start of the engine

Switch off ignition and make sure of completeness of landing and reliability of fixing of the contact socket of the module of management of VDC.

Measure resistance between the mass of the chassis and everyone (And and In) from diagnostic plugs (B81). If the result of measurement makes less than 5 Ohms, pass to the following stage of check, otherwise check a condition of a plait of the corresponding electrical wiring, make necessary recovery repair.

Switch off ignition and connect the diagnostic plug to the plug No. 8 of the diagnostic B82 socket. Disunite the contact socket of the module of management and measure resistance between the plug No. 13 of the F87 socket and mass of the chassis. If the result of measurement makes less than 5 Ohms, pass to the following stage of check, otherwise check a condition of an electrical wiring on a chain site between the module of management of VDC and the diagnostic socket, make necessary recovery repair.

Lay a sheet of paper 1.5 mm thick in area of the sensor switch of the contact socket of the module of management of VDC and include ignition, - if control lamps of ABS and VDC are not activated, pass to the following stage of check, otherwise make recovery repair of an electrical wiring.

Switch off ignition and check a condition of ledges of plugs of the socket of the module of management. If plugs as it should be, pass to the following stage of check, otherwise replace the module of management (see the Section Removal, installation and adjustment of the module of management of VDC).

Disconnect an electrical wiring from the module of management of VDC, start the engine on single turns and measure tension between the plug No. 28 of the F87 socket of the module and mass of the chassis. If the result of measurement does not exceed the limit of the range of 10 ÷ 15 V, pass to the following stage of check, otherwise make necessary recovery repair of an electrical wiring of a chain of giving of food on the module of management.

Check a state and reliability of fixing of the contact socket of the module of management of VDC. In case of need make necessary corrections, or replace the module.

The alarm indicator of operation of VDC is not switched-off after implementation of start of the engine

Switch off ignition and disconnect an electrical wiring from the module of management of VDC.

Include ignition, - if the light indicator of operation of VDC is not activated, replace the module of management, otherwise make recovery repair of an electrical wiring.

The alarm indicator of deactivation of VDC (VDC OFF) is not switched-off after implementation of start of the engine

Make compulsory shutdown of VDC by means of the VDC OFF switch, switch off and again include ignition, - the serviceable indicator has to go out. Ate the light indicator it will not be disconnected, pass to the following stage of check.

Check temperature of cooling liquid of the engine, - if the indicator is activated at the cold engine and dies away after its warming up up to the normal working temperature, therefore, everything is all right, otherwise pass to the following stage of check.

Remove the switch of compulsory shutdown of VDC and check its state (see the Section Removal, installation and check of serviceability of functioning of the switch of deactivation of VDC (VDC OFF)). In case of need replace the switch. If the switch as it should be, pass to the following stage of check.

Switch off ignition, disconnect an electrical wiring from the module of management of VDC, then again turn the ignition key in the situation ON, - if the indicator is not activated, pass to the following stage of check, otherwise repair an electrical wiring.

Remove a safety lock of the VDC OFF switch and measure resistance between the plug No. 40 of the F87 socket of the module of management and mass of the chassis. If the result of measurement makes more than 1 megohm, replace the module of management, otherwise replace the switch.

It is not possible to make reading of codes of malfunctions

If the control lamp joins and disconnected regularly, however does not highlight an initial code (DTC 11, - see below) upon transition to the diagnostic mode, switch off ignition and execute checks.

Failures of wheel sensors

Failures of wheel sensors lead to violation of serviceability of functioning of ABS and VDC systems. The scheme of connection of wheel sensors is submitted on an illustration.


Break in chains of the wheel sensor, or excessively high level of entrance tension (DTC No. No. 21, 23, 25 and 27)

Switch off ignition. Disconnect an electrical wiring from the corresponding wheel sensor. Measure resistance between plugs No. No. 1 and 2 of the contact socket of the sensor. If the result of measurement does not exceed the limit of the range of 1 ÷ 1.5 kOhm, pass to the following stage of check, otherwise replace the sensor.

Disconnect an electrical wiring from the module of management of VDC and measure tension between the plug No. 1 of the corresponding wheel sensor and mass of the chassis. If the result of measurement makes less than 1 V, pass to the following stage of check, otherwise replace the sensor.

Include ignition and repeat the previous check. If the result of measurement makes less than 1 V, pass to the following stage of check, otherwise replace the sensor.

Switch off ignition and connect an electrical wiring to the sensor. Measure resistance between plugs No. No. 14 and 15 (DTC 21)/49 and 19 (DTC 23)/18 and 46 (DTC 25)/16 and 17 (DTC 27) of the F87 socket. If the result of measurement does not exceed the limit of the range of 1 ÷ 1.5 kOhm, pass to the following stage of check, otherwise check a condition of an electrical wiring on a site between the module of management and the sensor. Make necessary recovery repair.

Measure tension between the weight and the plug No. 14 (DTC 21)/49 (DTC 23)/18 (DTC 25)/16 (DTC 27) of the F87 socket. If the result of measurement makes more than 1 V, eliminate the reason of short circuit on a chain site between the sensor and the module of management of ABS. In the absence of tension (less than 1 V) include ignition and repeat check. If tension on the former is absent (makes less than 1 V), pass to the following stage of check, otherwise check a condition of an electrical wiring between the sensor and the module of management of VDC, in case of need eliminate the reason of short circuit.

Switch off ignition and check reliability of a tightening of bolts of fastening of the sensor (32 Nanometers). In case of need tighten fixture and pass to the following stage of check.

Measure gap size between the sensor and a rotor on all perimeter of the last. At an insufficient gap (see Specifications) make its adjustment by selection of adjusting laying (26755AA000). If the gap is too great, remove remote laying and replace a rotor (assembled with hinged assembly) or the failed sensor. Having finished adjustment, pass to the following stage of check.

Check wheel nave beating size. If the result of measurement makes less than 0.05 mm, pass to the following stage of check, otherwise replace stupichny assembly.

Check reliability of fastening of contact sockets of the module of management and the wheel sensor. Make necessary corrections. If contacts as it should be, pass to the following stage of check.

Restore initial connection of all contact sockets, clear memory of the processor (see below) and repeat procedure of reading of diagnostic codes. If no changes (towards improvement) happened, replace assembly of the module of management of VDC. At emergence of new codes pass to performance of the corresponding check. If refusal did not repeat, therefore, malfunction was temporary, - once again make sure of reliability of fastening of all contact connections.

Short circuit in a chain of the wheel sensor (DTC No. No. 22, 24, 26 and 28)

Switch off ignition and check reliability of a tightening of bolts of fastening of the sensor (32 Nanometers). In case of need tighten fixture and pass to the following stage of check.

Measure gap size between the sensor and a rotor on all perimeter of the last. At an insufficient gap (see Specifications) make its adjustment by selection of adjusting laying (26755AA000). If the gap is too great, remove remote laying and replace a rotor (assembled with hinged assembly) or the failed sensor. Having finished adjustment, pass to the following stage of check.

In the absence of opportunity to use an oscillograph pass to check of a mechanical condition of a rotor and cleaning of components.

In the presence of an oscillograph the car also establish to a poddomkratta it on props, - wheels have to come off the earth completely. Switch off ignition, disconnect an electrical wiring from the module of management of VDC and connect an oscillograph between No. No. 14 plugs (+) and 15 (-) (DTC 22)/49 (+) and 19 (-) (DTC 24) of the B62 or 18 socket (+) and 46 (-) (DTC 26)/16 (+) and 17 (-) (DTC 28) of the F87 socket.

 Performance of this procedure can lead to record in memory of the processor of a code of malfunction 29.


Include ignition and, rotating the corresponding wheel of the car, watch indications of an oscillograph. Amplitude of the displayed sinusoidal signal should not exceed the limit of range 0.12 ÷ 1.00 In, - if this condition is not satisfied, or the signal has the wrong form, pass to the following stage of check.

Attentively examine the wheel sensor and its rotor on existence of signs of damages and pollution. Wipe components, eliminate the malfunctions taking place.

Check wheel nave beating size. If the result of measurement makes less than 0.05 mm, pass to the following stage of check, otherwise replace a nave.

Switch off ignition. Disconnect an electrical wiring from the corresponding wheel sensor. Measure resistance between plugs No. No. 1 and 2 of the contact socket of the sensor. If the result of measurement does not exceed the limit of the range of 1 ÷ 1.5 kOhm, pass to the following stage of check, otherwise replace the sensor.

Measure resistance between the weight and the plug No. 1 of the contact socket of the wheel sensor. If the result of measurement makes more than 1 megohm, pass to the following stage of check, otherwise replace the sensor.

Connect an electrical wiring to the wheel sensor, disconnect an electrical wiring from the module of management of VDC and measure resistance between plugs No. No. 14 and 15 (DTC 22)/49 and 19 (DTC 24)/18 and 46 (DTC 26)/16 and 17 (DTC 28) of the F87 socket of the module of management of VDC. If the result of measurement does not exceed the limit of the range of 1 ÷ 1.5 kOhm, pass to the following stage of check, otherwise make necessary recovery repair of an electrical wiring on a chain site between the sensor and the module of management of VDC.

Measure resistance between the mass of the chassis and the plug No. 14 (DTC 22)/49 (DTC 24)/18 (DTC 26)/16 (DTC 28) of the F87 socket of the module of management. If the result of measurement makes more than 1 megohm, pass to the following stage of check, otherwise check an electrical wiring between the sensor and the module for existence of short circuit. Make necessary recovery repair.

Measure resistance between the weight and plugs No. No. 1 and 55 of the F87 socket. If the result of measurement makes less than 0.5 Ohms, pass to the following stage of check, otherwise eliminate a cause of infringement of quality of grounding.

Check reliability of fastening of contact sockets of the module of management of ABS and the wheel sensor. Make necessary corrections. If contacts as it should be, pass to the following stage of check.

Make sure that automobile phone / transmitter of remote control is installed on sufficient removal from a plait of an electrical wiring of the wheel sensor.

Restore initial connection of all contact sockets and measure resistance between the mass of the chassis and the plug No. A5 (DTC 22)/A6 (DTC 24) of the B62 socket or according to kemmam of the F55 socket (DTC 26 and 28). If the result of measurement makes less than 0.5 Ohms, pass to the following stage of check, otherwise replace a screened plait.

Restore initial connection of all contact sockets and repeat procedure of reading of diagnostic codes. If no changes (towards improvement) happened, replace assembly of the module of management of VDC. At emergence of new codes pass to the corresponding dough. If refusal did not repeat, therefore, malfunction was temporary, - once again make sure of reliability of fastening of all contact connections.

The problems connected with serviceability of delivery by the wheel sensor (one or all four) information signal (DTC 29) take place

 Free rotation of wheels within more than 1 minute, and also the long movement with the steering wheel which is turned out against the stop can lead to record in memory of the processor of a code of malfunction 29, - simply clear memory (see below).


Estimate a condition of protectors and pressure of a rating of tires. In case of need make the corresponding corrections / replacements.

Check reliability of a tightening of bolts of fastening of wheel sensors (32 ± 10 Nanometers). In case of need tighten fixture and pass to the following stage of check.

Measure gap size between the sensor and a rotor on all perimeter of the last. At an insufficient gap (see Specifications) make its adjustment by selection of adjusting laying (26755AA000). If the gap is too great, remove remote laying and replace a rotor or the failed sensor. Having finished adjustment, pass to the following stage of check.

In the absence of opportunity to use an oscillograph pass to check of a mechanical condition of a rotor and cleaning of components. In the presence of an oscillograph the car also establish to a poddomkratta it on props, - wheels have to come off the earth completely. Switch off ignition, disconnect an electrical wiring from the module of management of VDC and connect an oscillograph between No. No. 14 plugs (+) and 15 (-) (DTC 22)/49 (+) and 19 (-) (DTC 24)/18 (+) and 46 (-) (DTC 26)/16 (+) and 17 (-) (DTC 28) of the F87 socket. Remark: Performance of this procedure can lead to record in memory of the processor of a code of malfunction 29.

Include ignition and, rotating the corresponding wheel of the car, watch indications of an oscillograph. Amplitude of the displayed sinusoidal signal should not exceed the limit of range 0.12 ÷ 1.00 In, - if this condition is not satisfied, or the signal has the wrong form, pass to the following stage of check, otherwise pass to performance of the following check.

Attentively examine the wheel sensor and its rotor on existence of signs of damages and pollution. Wipe components, eliminate the malfunctions taking place.

Check wheel nave beating size. If the result of measurement makes less than 0.05 mm, pass to the following stage of check, otherwise replace a nave.

Switch off ignition. Restore initial connection of all contact sockets and repeat procedure of reading of diagnostic codes. If no changes (towards improvement) happened, replace assembly of the module of management of VDC. At emergence of new codes pass to the corresponding dough. If refusal did not repeat, therefore, malfunction was temporary, - once again make sure of reliability of fastening of all contact connections.

Failures of the VDC hydromodulator

Failures of the hydromodulator lead to violation of serviceability of functioning of ABS and VDC systems. The electric circuit of connection of the VDC hydromodulator is presented on an illustration.


Violation of serviceability of functioning of inlet and locking (DTC 31, 33, 35 and 37, 61 and 62) of electromagnetic valves

Switch off ignition and disunite two contact pairs (VDC2/VDC1 and VDC5/F91) of the VDC hydromodulator (see an illustration 41.58). Measure resistance between plugs No. 5 (DTC 31)/8 (DTC 33)/7 (DTC 35)/6 (DTC 37)/9 (DTC 61)/12 (DTC 62) of the VDC5 socket and No. 2 of the VDC2 socket. If the result of change does not exceed the limit of the range of 8.04 ÷ 9.04 Ohms, pass to the following stage of check, otherwise replace the VDC hydromodulator.

Measure resistance between the plug No. 5 (DTC 31)/8 (DTC 33)/7 (DTC 35)/6 (DTC 37)/9 (DTC 61)/12 (DTC 62) of the VDC5 socket and mass of the chassis. If the result of change makes more than 1 megohm, pass to the following stage of check, otherwise replace the VDC hydromodulator.

Disconnect an electrical wiring from the module of management of VDC and measure tension between the plug No. 5 (DTC 31)/8 (DTC 33)/7 (DTC 35)/6 (DTC 37)/9 (DTC 61)/12 (DTC 62) of the VDC5 socket and mass of the chassis. If the result of change makes less than 1 V, pass to the following stage of check, otherwise replace the VDC hydromodulator.

Include ignition and repeat the check described in the previous paragraph. If the result of change makes less than 1 V, pass to the following stage of check, otherwise replace the VDC hydromodulator.

Switch off ignition and measure tension between the plug No. 30 (DTC 31)/24 (DTC 33)/23 (DTC 35)/31 (DTC 37)/25 (DTC 61)/26 (DTC 62) of the F87 socket of the module of management and mass of the chassis. If the result of change makes less than 1 V, pass to the following stage of check, otherwise make recovery repair of an electrical wiring on a chain site between the module of management and the VDC hydromodulator.

Include ignition and repeat the check described in the previous paragraph. If the result of change makes less than 1 V, pass to the following stage of check, otherwise replace the VDC hydromodulator.

Switch off ignition and measure resistance between the plug No. 30 (DTC 31)/24 (DTC 33)/23 (DTC 35)/31 (DTC 37)/25 (DTC 61)/26 (DTC 62) of the F87 socket of the module of management and mass of the chassis. If the result of change makes more than 1 megohm, pass to the following stage of check, otherwise make recovery repair of an electrical wiring on a chain site between the module of management and the VDC hydromodulator.

Connect contact couple of F91/VDC5 of the hydromodulator and measure resistance between plugs No. 30 (DTC 31)/24 (DTC 33)/23 (DTC 35)/31 (DTC 37)/25 (DTC 61)/26 (DTC 62) of the F87 socket of the module of management and No. 2 of the VDC2 socket of the hydromodulator. If the result of change does not exceed the limit of the range of 7 ÷ 10 Ohms, pass to the following stage of check, make recovery repair of an electrical wiring on a chain site between the module of management and the VDC hydromodulator.

Check reliability of fastening of contact sockets of the module of management and the VDC hydromodulator. Make necessary corrections. If contacts as it should be, pass to the following stage of check.

Restore initial connection of all contact sockets, clear memory of the processor (see below) and repeat procedure of reading of diagnostic codes. If no changes (towards improvement) happened, replace assembly of the module of management of VDC. At emergence of new codes pass to performance of the corresponding check. If refusal did not repeat, therefore, malfunction was temporary, - once again make sure of reliability of fastening of all contact connections.
Violation of serviceability of functioning of final and soaking-up (DTC 32, 34, 36 and 38, 63, 64) of electromagnetic valves

Switch off ignition and disunite two contact pairs (VDC2/VDC1 and VDC5/F91) of the VDC hydromodulator (see an illustration 41.58). Measure resistance between plugs No. 1 (DTC 32)/4 (DTC 34)/3 (DTC 36)/2 (DTC 38)/10 (DTC 63)/11 (DTC 64) of the VDC5 socket and No. 2 of the VDC2 socket. If the result of change does not exceed the limit of the range of 3.8 ÷ 4.8 Ohms, pass to the following stage of check, otherwise replace the VDC hydromodulator.

Measure resistance between the plug No. 1 (DTC 32)/4 (DTC 34)/3 (DTC 36)/2 (DTC 38)/10 (DTC 63)/11 (DTC 64) of the VDC5 socket and mass of the chassis. If the result of change makes more than 1 megohm, pass to the following stage of check, otherwise replace the VDC hydromodulator.

Disconnect an electrical wiring from the module of management of VDC and measure tension between the plug No. 1 (DTC 32)/4 (DTC 34)/3 (DTC 36)/2 (DTC 38)/10 (DTC 63)/11 (DTC 64) of the VDC5 socket and mass of the chassis. If the result of change makes less than 1 V, pass to the following stage of check, otherwise replace the VDC hydromodulator.

Include ignition and repeat the check described in the previous paragraph. If the result of change makes less than 1 V, pass to the following stage of check, otherwise replace the VDC hydromodulator.

Switch off ignition and measure tension between the plug No. 3 (DTC 32)/51 (DTC 34)/50 (DTC 36)/4 (DTC 38)/29 (DTC 63)/2 (DTC 64) of the F87 socket of the module of management and mass of the chassis. If the result of change makes less than 1 V, pass to the following stage of check, otherwise make recovery repair of an electrical wiring on a chain site between the module of management and the VDC hydromodulator.

Include ignition and repeat the check described in the previous paragraph. If the result of change makes less than 1 V, pass to the following stage of check, otherwise replace the VDC hydromodulator.

Switch off ignition and measure resistance between the plug No. 3 (DTC 32)/51 (DTC 34)/50 (DTC 36)/4 (DTC 38)/29 (DTC 63)/2 (DTC 64) of the F87 socket of the module of management and mass of the chassis. If the result of change makes more than 1 megohm, pass to the following stage of check, otherwise make recovery repair of an electrical wiring on a chain site between the module of management and the VDC hydromodulator.

Connect contact couple of F91/VDC5 of the hydromodulator and measure resistance between plugs No. 3 (DTC 32)/51 (DTC 34)/50 (DTC 36)/4 (DTC 38)/29 (DTC 63)/2 (DTC 64) of the F87 socket of the module of management and No. 1 of the VDC2 socket of the hydromodulator. If the result of change does not exceed the limit of the range of 3 ÷ 6 Ohms, pass to the following stage of check, make recovery repair of an electrical wiring on a chain site between the module of management and the VDC hydromodulator.

Check reliability of fastening of contact sockets of the module of management and the VDC hydromodulator. Make necessary corrections. If contacts as it should be, pass to the following stage of check.

Restore initial connection of all contact sockets, clear memory of the processor (see below) and repeat procedure of reading of diagnostic codes. If no changes (towards improvement) happened, replace assembly of the module of management of VDC. At emergence of new codes pass to performance of the corresponding check. If refusal did not repeat, therefore, malfunction was temporary, - once again make sure of reliability of fastening of all contact connections.

Violation of serviceability of functioning of the module of management of VDC (DTC 41)

 Failures of the module of management lead to violation of serviceability of functioning of ABS and VDC systems.


Switch off ignition. Disconnect an electrical wiring from the module of management of VDC and measure resistance between the mass of the chassis and plugs No. No. 2 and 5 of the F87 socket of the module of management. If the result of measurement makes less than 0.5 Ohms, pass to the following stage of check, otherwise eliminate a cause of infringement of quality of grounding.

Check serviceability of a state and reliability of fixing of contact sockets of an electrical wiring of the module of management of VDC. In case of need make the corresponding recovery repair. If violations of quality of contacts are absent, pass to the following stage of check.

Make sure that automobile phone / transmitter of remote control is installed on sufficient removal from ABS/VDC electrical wiring plaits.

Switch off ignition. Restore initial connection of an electrical wiring. Clear memory of the processor and repeat procedure of reading of diagnostic codes. If no changes (towards improvement) happened, replace assembly of the module of management of VDC. At emergence of new codes pass to the corresponding dough. If refusal did not repeat, therefore, malfunction was temporary, - once again make sure of reliability of fastening of all contact connections.

Deviation from the face value of level of supply voltage (DTC 42)

Start the engine and warm up it up to the normal working temperature. Check correctness of installation of turns of idling. Measure tension between the plug B (+) on the back party of the generator and the mass of the chassis. If the result of measurement does not exceed the limit of the range of 10 ÷ 15 V, pass to the following stage of check, otherwise check a condition of system of a charge (see the Head Elektrooborudovaniye of the engine), make necessary corrections.

Switch off ignition and check a condition of polar plugs of the battery and reliability of fixing for them terminal tips of wires. In case of need smooth out contact surfaces of plugs/tips. If plugs as it should be, disconnect an electrical wiring from the module of management of VDC, start the engine on single turns and measure tension between the mass and the plug No. 28 (+) of the F87 socket. If the result of measurement does not exceed the limit of the range of 10 ÷ 15 V, pass to the following stage of check, otherwise check a condition of an electrical wiring between the switch of ignition and the contact socket of the module of management of VDC. Make necessary recovery repair.

Switch off ignition and measure resistance between the weight and plugs No. No. 1 and 55 of the F87 socket and mass of the chassis. If the result of measurement makes less than 0.5 Ohms, pass to the following stage of check, otherwise eliminate a cause of infringement of quality of grounding.

Check serviceability of a state and reliability of fixing of contact sockets of an electrical wiring on the module of management of VDC, the generator and the battery. In case of need make the corresponding recovery repair. If violations of quality of contacts are absent, pass to the following stage of check.

Switch off ignition. Restore initial connection of an electrical wiring. Clear memory of the processor and repeat procedure of reading of diagnostic codes. If no changes (towards improvement) happened, replace assembly of the module of management of VDC. At emergence of new codes pass to the corresponding dough. If refusal did not repeat, therefore, malfunction was temporary, - once again make sure of reliability of fastening of all contact connections.

Violation of serviceability of communication between the module of management of VDC and ECM (DTC 43) Switch off ignition and disconnect an electrical wiring from the module of management of VDC and ECM. Measure resistance between plugs No. No. 21, 43 and 8 of the F87 VDC socket and 6, 5 and 18 (4-cylinder engines)/12, 4 and 11 (6-cylinder engines), respectively, the B135/B134 ECM socket. If the result of change makes less than 0.5 Ohms, pass to the following stage of check, otherwise make recovery repair of an electrical wiring between two modules.


Measure resistance between plugs No. No. 21, 43 and 8 of the F87 socket and mass of the chassis. If the result of change makes more than 1 megohm, pass to the following stage of check, otherwise make recovery repair of an electrical wiring between two modules.

Measure tension between plugs No. No. 21, 43 and 8 of the F87 socket and mass of the chassis. If the result of change makes less than 0.5 In, pass to the following stage of check, otherwise make recovery repair of an electrical wiring between two modules.

Include ignition and repeat check of the previous stage. If the result of change makes less than 0.5 In, pass to the following stage of check, otherwise make recovery repair of an electrical wiring between two modules.

Switch off ignition, connect an electrical wiring to ECM, then again turn the ignition key in the situation ON and measure resistance between plugs No. No. 21, 43 and 8 of the F87 socket and mass of the chassis. If the result of change does not exceed the limit of the range of 10 ÷ 15 V, pass to the following stage of check, otherwise execute check.

Check a state and reliability of fixing of contact sockets of the module of management of VDC and ECM. In case of need smooth out plugs and pass to the following stage of check.

Switch off ignition. Restore initial connection of an electrical wiring. Clear memory of the processor and repeat procedure of reading of diagnostic codes. If no changes (towards improvement) happened, replace assembly of the module of management of VDC. At emergence of new codes pass to the corresponding dough. If refusal did not repeat, therefore, malfunction was temporary, - once again make sure of reliability of fastening of all contact connections.

Include ignition and measure tension between plugs No. No. 12, 4 and 11 of the B135/B134 ECM socket and mass of the chassis. If the result of change does not exceed the limit of the range of 10 ÷ 15 V, make recovery repair of an electrical wiring between two modules, otherwise pass to the following stage of check.

Check quality of contact connections, in case of need make necessary corrections. Also check serviceability of functioning of the engine (see the Head of the Power supply system and release). In case of need replace ECM, or execute recovery repair of the power unit.

Violation of serviceability of communication between the module of management of VDC and TCM (DTC 44)

Switch off ignition and disconnect an electrical wiring from TCM. Measure resistance between plugs No. 9 and 18 of the contact B56 TCM socket. If the result of measurement does not exceed the limit of range 60 ± 3 Ohms, pass to performance of the following stage of check, otherwise make recovery repair of an electrical wiring between the VDC and TCM module.


Check a condition of contact sockets, in case of need smooth out plugs and pass to the following stage of check

Switch off ignition and disunite two sockets of an electrical wiring of the module of management of transmission (TCM). Also disconnect an electrical wiring from the module of management of ABS. Measure resistance between the plug No. 3 of the F49 socket and mass of the chassis. If the result of measurement makes more than 1 megohm, pass to the following stage of check, otherwise make recovery repair of an electrical wiring on a site between TCM and the module of management of ABS.

Switch off ignition. Connect an electrical wiring to TCM, then again turn the ignition key in the situation ON. Measure tension between the mass of the chassis and plugs No. 21 of the 24-contact B55 TCM socket. If the result of measurement makes 10 ÷ 15 V, pass to the following stage of check, otherwise TCM needs recovery repair, - if violations of serviceability of functioning of AT take place, replace TCM.

Measure tension between the weight and plugs No. No. 3 and 31 of the F49 socket. If the result of measurement does not exceed the limit of the range of 10 ÷ 15 V, pass to the following stage of check, otherwise check a condition of an electrical wiring on a site between the module of management of ABS and TCM. Make necessary recovery repair.

Check a state and reliability of fixing of contact sockets of modules of management of ABS and AT. In case of need smooth out plugs and pass to the following stage of check.

Switch off ignition. Restore initial connection of an electrical wiring. Clear memory of the processor and repeat procedure of reading of diagnostic codes. If no changes (towards improvement) happened, replace assembly of the module of the VDC management/hydromodulator. At emergence of new codes pass to the corresponding dough. If refusal did not repeat, therefore, malfunction was temporary, - once again make sure of reliability of fastening of all contact connections.

Deviation from the face value of level of tension of 5-volt food (DTC 46)

Switch off ignition, disconnect an electrical wiring from the module of management of VDC and measure resistance between the plug No. No. 63 and 78 of the F87 socket and mass of sensors of cross overloads and pressure, respectively. If the result of measurement makes more than 1 megohm, the following stage of check should be passed.

Disconnect an electrical wiring from the faulty sensor and measure resistance between No. No. 63 plug (the sensor of cross overloads)/78 (pressure sensor) the F87 socket of the module of management of VDC and the mass of the sensor. If the result of measurement makes more than 1 megohm, replace the failed sensor, otherwise make repair of an electrical wiring between the module of management of VDC and the corresponding sensor.

Measure tension between plugs No. No. 63 and 78 and mass of the corresponding sensor. If the result of measurement makes less than 0.5 In, pass to the following stage of check, otherwise pass the following stage.

Include ignition and repeat the check described in the previous paragraph. If the result of measurement makes less than 0.5 In, replace the module of management of VDC, otherwise pass to the following stage of check.

Switch off ignition, disconnect an electrical wiring from the faulty sensor and measure tension between plugs No. No. 6378 and mass of the corresponding sensor. If the result of measurement makes less than 0.5 In, pass to the following stage of check, otherwise replace the module of management of VDC and the corresponding sensor.

Include ignition and repeat the check described in the previous paragraph. If the result of measurement makes less than 0.5 In, replace the faulty sensor, otherwise proizvdeit recovery repair of an electrical wiring between the sensor and the module of management of VDC.

Malfunction of a line of communication of the network controler (CAN) (DTC 47)

Switch off ignition, disconnect an electrical wiring from the module of management of VDC, TCM and the sensor of an angle of rotation of a steering wheel. Measure resistance between the following pairs of plugs: No. 83 (F87) - No. 9 (B56), No. 81 (F87) - No. 18 (B56), No. 83 (F87) - No. 2 (B231), No. 81 (F87) - No. 1 (B231). If the result of measurement makes less than 5 Ohms, the following stage of check can be lowered.

Measure resistance between plugs No. 9 (B56) - No. 2 (B231) and No. 18 (B56) - No. 1 (B231). If the result of measurement makes less than 0.5 In, make recovery repair of an electrical wiring between the module of management of VDC and the sensor of an angle of rotation, otherwise repair an electrical wiring between the sensor and TCM.

Measure resistance between plugs No. No. 83 and 81 of the F87 socket and mass of the chassis. If the result of measurement makes more than 1 megohm, pass to the following stage of check, otherwise repair an electrical wiring between the module of management of VDC and TCM.

Measure tension between plugs No. No. 83 and 81 of the F87 socket and mass of the chassis. If the result of measurement makes less than 0.5 In, pass to the following stage of check, otherwise repair an electrical wiring between the module of management of VDC and TCM.

Include ignition and repeat the check described in the previous paragraph. If the result of measurement makes less than 0.5 In, pass to the following stage of check, otherwise repair an electrical wiring between the module of management of VDC and TCM.

Switch off ignition, connect an electrical wiring to the sensor of an angle of rotation of a steering wheel and measure resistance between plugs No. No. 83 and 81 of the F87 socket of the module of management.

Check quality of contact connections, in case of need smooth out plugs and pass to the following stage of check.

Connect an electrical wiring to the module of management of VDC, disconnect it from the sensor of an angle of rotation of a steering wheel and measure resistance between plugs No. No. 1 and 2 of the B231 socket of the sensor. If the result of measurement does not exceed the limit of range 120 ± 6 Ohms, the following stage of check can be lowered.

Check quality of contact connections, in case of need smooth out plugs and pass to the following stage of check.

Connect an electrical wiring to TCM, disconnect it from the module of management of VDC and measure resistance between plugs No. No. 1 and 2 of the B231 socket. If the result of measurement makes more than 1 megohm, the following stage of check can be lowered.

Check quality of contact connections, in case of need smooth out plugs and pass to the following stage of check.

Restore initial connection of an electrical wiring. Clear memory of the processor and repeat procedure of reading of diagnostic codes. If no changes (towards improvement) happened, replace assembly of the module of the VDC management/hydromodulator. At emergence of new codes pass to the corresponding dough. If refusal did not repeat, therefore, malfunction was temporary, - once again make sure of reliability of fastening of all contact connections.

Violation of serviceability of communication between ECM and the module of management of VDC and (DTC 48)

Switch off ignition and disconnect an electrical wiring from the module of management of VDC and ECM. Measure resistance between plugs No. No. 75 and 45 of the F87 VDC socket and 33 and 32 (4-cylinder engines)/11 and 12 (6-cylinder engines), respectively, the B134/B136 socket. If the result of change makes less than 0.5 Ohms, pass to the following stage of check, otherwise make recovery repair of an electrical wiring between two modules.

Measure resistance between plugs No. No. 75 and 45 of the F87 socket and mass of the chassis. If the result of change makes more than 1 megohm, pass to the following stage of check, otherwise make recovery repair of an electrical wiring between two modules.

Include ignition and measure tension between plugs No. No. 75 and 45 of the F87 socket and mass of the chassis. If the result of change makes less than 0.5 In, pass to the following stage of check, otherwise make recovery repair of an electrical wiring between two modules.

Switch off ignition, connect an electrical wiring to the module of management of VDC, then again turn the ignition key in the situation ON and measure resistance between plugs No. No. 33, 32 of the B134 socket (4-cylinder models)/№№ 11, 12 B136 sockets (6-cylinder models) and the mass of the chassis. If the result of change does not exceed the limit of the range of 10 ÷ 15 V, the following stage of check can be lowered.

Check a state and reliability of fixing of contact sockets of the module of management of VDC and ECM. In case of need smooth out plugs and pass to the following stage of check.

Switch off ignition. Restore initial connection of an electrical wiring. Clear memory of the processor and repeat procedure of reading of diagnostic codes. If no changes (towards improvement) happened, replace assembly of the module of management of VDC. At emergence of new codes pass to the corresponding dough. If refusal did not repeat, therefore, malfunction was temporary, - once again make sure of reliability of fastening of all contact connections.

Violation of serviceability of delivery of a signal of turns of the engine (DTC 49)

Check serviceability of functioning of the tachometer which is a part of a combination of devices. If the tachometer is serviceable, pass to the following stage of check, otherwise execute necessary recovery repair / replace the measuring instrument.

Switch off ignition, disconnect an electrical wiring from the module of management of VDC and ECM. Measure resistance between the plug No. 30 of the B134 socket and mass of the chassis (4-cylinder engines) of/№ 9 F87 socket and No. 9 of the B136 socket (6-cylinder engines). If the result of measurement makes less than 0.5 Ohms, pass to the following stage of check, otherwise repair an electrical wiring between two modules.

Check a state and reliability of fixing of contact sockets of the module of management of VDC and ECM. In case of need smooth out plugs and pass to the following stage of check.

Switch off ignition. Restore initial connection of an electrical wiring. Clear memory of the processor and repeat procedure of reading of diagnostic codes. If no changes (towards improvement) happened, replace assembly of the module of management of VDC. At emergence of new codes pass to the corresponding dough. If refusal did not repeat, therefore, malfunction was temporary, - once again make sure of reliability of fastening of all contact connections.

Violation of serviceability of functioning of the valvate relay (DTC 51)

Violation of serviceability of functioning of the valvate relay leads to refusal of ABS and VDC systems.

 Record in memory of the processor of the DTC 74 code (failure of the sensor of pressure) is followed also by record of a code 51.


Switch off ignition and take the valvate relay from the assembly block. Measure resistance between plugs No. No. 85 and 86 of the relay. If the result of measurement does not exceed the limit of the range of 93 ÷ 113 Ohms, pass to the following stage of check, otherwise replace the relay.

Connect the battery to plugs No. No. 85 and 86 and measure resistance between plugs No. No. 30 and 87. If the result of measurement makes less than 0.5 Ohms, pass to the following stage of check, otherwise replace the relay.

Measure resistance between plugs No. No. 30 and 87a the relay. If the result of measurement makes more than 1 megohm, pass to the following stage of check, otherwise replace the relay.

Disconnect the battery from the relay and measure resistance between plugs No. No. 30 and 87. If the result of measurement makes more than 1 megohm, pass to the following stage of check, otherwise replace the relay.

Measure resistance between plugs No. No. 30 and 87a the relay. If the result of measurement makes less than 0.5 Ohms, pass to the following stage of check, otherwise replace the relay.

Measure resistance between the plug No. 86 and plugs No. No. 87 and 87a the relay. If the result of measurement makes more than 1 megohm, pass to the following stage of check, otherwise replace the relay.

Disunite contact couple of VDC3/F89 of the assembly block of the relay and measure tension between the plug No. 1 (+) of the F89 socket and the mass of the chassis. If the result of measurement does not exceed the limit of the range of 10 ÷ 15 V, pass to the following stage of check, otherwise make repair of an electrical wiring between the battery and the assembly block, check also a condition of a safety lock No. 8.

Disunite contact couple of VDC1/VDC2, connect to F89/VDC3 steam of the assembly block, include ignition and measure tension between the plug No. 87 (+) the relay and mass of the chassis. If the result of measurement does not exceed the limit of the range of 10 ÷ 15 V, pass to the following stage of check, otherwise replace the assembly block and check also a condition of a safety lock No. 8.

Switch off ignition, disunite contact couple of F90/VDC4 of the assembly block and measure resistance between plugs No. No. 5 and 1 of the VDC4 socket and adjusting points No. No. 85 and 86 of the relay of the VDC4 socket respectively. If the result of measurement makes less than 0.5 Ohms, pass to the following stage of check, otherwise replace the assembly block.

Measure resistance between plugs No. No. 5 and 1 of the VDC4 socket and mass of the chassis. If the result of measurement makes more than 1 megohm, pass to the following stage of check, otherwise replace the assembly block and check a safety lock No. 8.

Measure tension between plugs No. No. 5 and 1 of the VDC4 socket and mass of the chassis. If the result of measurement makes less than 1 V, pass to the following stage of check, otherwise replace the assembly block and check a safety lock No. 8.

Include ignition and repeat the check described in the previous paragraph. If the result of measurement makes less than 1 V, pass to the following stage of check, otherwise replace the assembly block and check a safety lock No. 8.

Switch off ignition, disconnect an electrical wiring from the module of management of VDC and measure resistance between plugs No. No. 47 and 27 of the F87 socket of the module and No. No. 5 and 1 of the F90 socket respectively. If the result of measurement makes less than 0.5 Ohms, pass to the following stage of check, otherwise repair an electrical wiring between the module of management of VDC and the assembly block.

Measure resistance between plugs No. No. 47 and 27 of the F87 socket and mass of the chassis. If the result of measurement makes more than 1 megohm, pass to the following stage of check, otherwise repair an electrical wiring between the module of management of VDC and the assembly block.

Measure tension between plugs No. No. 27 and 47 of the F87 socket and mass of the chassis. If the result of measurement makes less than 1 V, pass to the following stage of check, otherwise repair an electrical wiring between the module of management of VDC and the assembly block, also check all safety locks.

Include ignition and repeat the check described in the previous paragraph. If the result of measurement makes less than 1 V, pass to the following stage of check, otherwise repair an electrical wiring between the module of management of VDC and the assembly block.

Measure resistance between the plug No. 2 of the VDC1 socket and an adjusting point No. 30 of the relay of the VDC6 socket. If the result of measurement makes less than 0.5 Ohms, pass to the following stage of check, otherwise replace the assembly block.

Measure resistance between the plug No. 2 of the VDC1 socket and mass of the chassis. If the result of measurement makes more than 1 megohm, pass to the following stage of check, otherwise replace the assembly block and check a safety lock No. 8.

Measure tension between the plug No. 2 of the VDC1 socket and mass of the chassis. If the result of measurement makes less than 1 V, pass to the following stage of check, otherwise replace the assembly block and check a safety lock No. 8.

Include ignition and repeat the check described in the previous paragraph. If the result of measurement makes less than 1 V, pass to the following stage of check, otherwise replace the assembly block and check a safety lock No. 8.

Disconnect an electrical wiring from the VDC hydromodulator and measure resistance between plugs No. No. 8, 5, 6, 7, 9 and 12 of the VDC5 socket and the plug No. 2 of the VDC2 socket. If the result of measurement does not exceed the limit of the range of 8.04 ÷ 9.04 Ohms, pass to the following stage of check, otherwise replace the hydromodulator (see the Section Removal, installation and check of serviceability of functioning of the VDC hydromodulator).

Measure resistance between plugs No. No. 4, 1, 2, 3, 10 and 11 of the VDC5 socket and the plug No. 2 of the VDC2 socket. If the result of measurement does not exceed the limit of the range of 3.8 ÷ 4.8 Ohms, pass to the following stage of check, otherwise replace the hydromodulator (see the Section Removal, installation and check of serviceability of functioning of the VDC hydromodulator).

Measure resistance between the plug No. 2 of the VDC2 socket and mass of the chassis. If the result of measurement makes more than 1 megohm, pass to the following stage of check, otherwise replace the hydromodulator (see the Section Removal, installation and check of serviceability of functioning of the VDC hydromodulator) and check all safety locks.

Measure tension between the plug No. 2 of the VDC1 socket and mass of the chassis. If the result of measurement makes less than 1 V, pass to the following stage of check, otherwise replace the hydromodulator and check all safety locks.

Include ignition and repeat the check described in the previous paragraph. If the result of measurement makes less than 1 V, pass to the following stage of check, otherwise replace the hydromodulator and check all safety locks.

Switch off ignition and measure tension between plugs No. No. 30, 24, 23, 31, 26, 25, 3, 51, 50, 4, 2 and 29 of the F87 socket and mass of the chassis. If the result of measurement makes less than 1 V, pass to the following stage of check, otherwise repair an electrical wiring between the hydromodulator and the module of management of VDC.

Include ignition and repeat the check described in the previous paragraph. If the result of measurement makes less than 1 V, pass to the following stage of check, otherwise repair an electrical wiring between the hydromodulator and the module of management of VDC.

Switch off ignition and measure resistance between plugs No. No. 30, 24, 23, 31, 26, 25, 3, 51, 50, 4, 2 and 29 of the F87 socket and mass of the chassis. If the result of measurement makes more than 1 megohm, pass to the following stage of check, otherwise repair an electrical wiring between the hydromodulator and the module of management of VDC.

Connect contact couple of F91/VDC5 and measure resistance between plugs No. No. 30, 24, 23, 31, 26 and 25 of the F87 socket and the plug No. 2 of the VDC2 socket. If the result of measurement does not exceed the limit of range 8.0 yo 10.0 Ohms, pass to the following stage of check, otherwise repair an electrical wiring between the hydromodulator and the module of management of VDC.

Measure resistance between plugs No. No. 3, 51, 50, 4, 2 and 29 of the F87 socket and the plug No. 2 of the VDC2 socket. If the result of measurement does not exceed the limit of the range of 4.3 ÷ 5.3 Ohms, pass to the following stage of check, otherwise repair an electrical wiring between the hydromodulator and the module of management of VDC.

Check serviceability of a state and reliability of fixing of contact sockets of an electrical wiring of modules of management and the VDC hydromodulator, in case of need make the corresponding corrections.

Switch off ignition. Restore initial connection of an electrical wiring. Clear memory of the processor and repeat procedure of reading of diagnostic codes. If no changes (towards improvement) happened, replace assembly of the module of management of VDC. At emergence of new codes pass to the corresponding dough. If refusal did not repeat, therefore, malfunction was temporary, - once again make sure of reliability of fastening of all contact connections.

Violation of serviceability of functioning of a driving electric motor / its relay (DTC 52)

Switch off ignition and take the electric motor relay from the assembly block. Measure resistance between plugs No. No. 85 and 86 of the relay. If the result of measurement does not exceed the limit of the range of 70 ÷ 90 Ohms, pass to the following stage of check, otherwise replace the relay.

Connect the battery to plugs No. No. 85 and 86 of the relay and measure resistance between plugs No. No. 30 and 87. If the result of measurement makes less than 0.5 Ohms, pass to the following stage of check, otherwise replace the relay.

Disconnect the battery from the relay and measure resistance between plugs No. No. 30 and 87 of the relay. If the result of measurement makes more than 1 megohm, pass to the following stage of check, otherwise replace the relay.

Measure resistance between the plug No. 85 and plugs No. No. 30 and 87 of the relay. If the result of measurement makes more than 1 megohm, pass to the following stage of check, otherwise replace the relay.

Disunite contact couple of VDC3/F89 of the assembly block of the relay and measure tension between the plug No. 2 (+) of the F89 socket and the mass of the chassis. If the result of measurement does not exceed the limit of the range of 10 ÷ 15 V, pass to the following stage of check, otherwise make repair of an electrical wiring between the battery and the assembly block, check also a condition of the holder of safety locks of SBF.

Restore connection of VDC3/F89 and measure tension between the plug No. 87 (+) the relay and mass of the chassis. If the result of measurement does not exceed the limit of the range of 10 ÷ 15 V, pass to the following stage of check, otherwise replace the assembly block.

Switch off ignition, disunite contact F90/VDC4 and VDC1/VDC2 vapors and measure resistance between the plug No. 1 of the VDC1 socket and the plug No. 30 of the VDC7 socket. If the result of measurement makes less than 0.5 Ohms, pass to the following stage of check, otherwise replace the assembly block.

Measure resistance between клеммой№ 6 VDC4 sockets and the plug No. 30 of the VDC7 socket. If the result of measurement makes less than 0.5 Ohms, pass to the following stage of check, otherwise replace the assembly block.

Measure resistance between клеммой№ 4 VDC4 sockets and the plug No. 85 of the VDC7 socket. If the result of measurement makes less than 0.5 Ohms, pass to the following stage of check, otherwise replace the assembly block.

Take the valvate relay from the assembly block and measure resistance between the plug No. 85 of the VDC7 socket of the relay of an electric motor and the plug No. 30 of the VDC6 socket. If the result of measurement makes less than 0.5 Ohms, pass to the following stage of check, otherwise replace the assembly block.

Measure resistance between plugs No. No. 4 and 6 of the VDC4 socket and mass of the chassis. If the result of measurement makes more than 1 megohm, pass to the following stage of check, otherwise replace the assembly block.

Measure tension between plugs No. No. 4 and 6 of the VDC4 socket and mass of the chassis. If the result of measurement makes less than 1 V, pass to the following stage of check, otherwise replace the assembly block.

Include ignition and repeat the check described in the previous paragraph. If the result of measurement makes less than 1 V, pass to the following stage of check, otherwise replace the assembly block.

Switch off ignition and measure resistance between plugs No. No. 22 and 10 of the F87 socket of the module and No. No. 4 and 6 of the F90 socket respectively. If the result of measurement makes less than 0.5 Ohms, pass to the following stage of check, otherwise repair an electrical wiring between the module of management of VDC and the assembly block.

Measure resistance between plugs No. No. 47 and 27 of the F87 socket and mass of the chassis. If the result of measurement makes more than 1 megohm, pass to the following stage of check, otherwise repair an electrical wiring between the module of management of VDC and the assembly block, check the holder of safety locks of SBF.

Measure tension between plugs No. No. 47 and 27 of the F87 socket and mass of the chassis. If the result of measurement makes less than 1 V, pass to the following stage of check, otherwise repair an electrical wiring between the module of management of VDC and the assembly block check the holder of safety locks of SBF.

Include ignition and repeat the check described in the previous paragraph. If the result of measurement makes less than 1 V, pass to the following stage of check, otherwise replace the assembly block.

Check reliability of a tightening of the plug of grounding of an electric motor (32 Nanometers), in case of need tighten fixture.

Switch off ignition, uncover contact knot of the module of management of VDC and restore initial connection of all sockets. Install both relays in the assembly block and make check of sequence of operation of valves of the module of management (see the Section Check of Sequence of Operation of Valves of ABS and VDC Hydromodulators), in parallel measuring resistance between No. No. 22 plugs (+) and 1 (-) of the F87 socket. If resistance falls from value of 10 ÷ 13 V to less than 1.5 In, and then comes back, pass to the following stage of check, otherwise replace the module of management of VDC.

Make check of sequence of operation of valves of the module of management (see the Section Check of Sequence of Operation of Valves of ABS and VDC Hydromodulators), - if during check the noise made by the working motor is audible, pass to the following stage of check, otherwise replace the hydromodulator.

Switch off ignition and check serviceability of a state and reliability of fixing of contact sockets of an electrical wiring of modules of management and the VDC hydromodulator, in case of need make the corresponding corrections.

Restore initial connection of an electrical wiring. Clear memory of the processor and repeat procedure of reading of diagnostic codes. If no changes (towards improvement) happened, replace assembly of the module of management of VDC. At emergence of new codes pass to the corresponding dough. If refusal did not repeat, therefore, malfunction was temporary, - once again make sure of reliability of fastening of all contact connections.

Violation of serviceability of functioning of the sensor of an angle of rotation of a steering wheel (DTC 71)

 The movement of the car on sand or off road terrain (not on dirt) can lead to record in memory of the processor of codes 71 and 72.


Tire out the car on a platform with an equal covering, bring forward wheels into rectilinear situation and check correctness of centering of a steering wheel. If violation of centering does not exceed 5 °, pass to the following stage of check, otherwise center landing of a wheel.

Switch off ignition, disconnect an electrical wiring from the sensor of an angle of rotation of a steering wheel, then again turn the ignition key in the situation ON and measure tension between the plug No. 4 of the B231 socket and mass of the chassis. If the result of measurement does not exceed the limit of the range of 10 ÷ 15 V, the following two stages of check can be passed.

Switch off ignition, disconnect an electrical wiring from the module of management of VDC, uncover contact knot of the module, then again connect the socket. Include ignition and measure tension between the plug No. 27 of the F87 socket and mass of the chassis. If the result of measurement does not exceed the limit of the range of 10 ÷ 15 V, repair an electrical wiring on a chain site between the module of management of VDC and the sensor of the taking-away moment, otherwise pass to the following stage of check.

Check quality of contact connection of the sensor of the taking-away moment, in case of need repair/replace the socket of the module of management of VDC, or replace the last assembled.

Measure resistance between the plug No. 3 of the B231 socket and mass of the chassis. If the result of measurement makes less than 0.5 Ohms, pass to the following stage of check, otherwise restore quality of grounding of the sensor of an angle of rotation of a steering wheel.

Connect an electrical wiring to the sensor of an angle of rotation of a steering wheel and the module of management of VDC and measure resistance between plugs No. No. 81 and 83 of the F87 socket of the module. If the result of measurement does not exceed the limit of range 129 ± 6 Ohms, repair an electrical wiring between the sensor and the module of management of VDC, otherwise pass to the following stage of check.

Restore initial connection of an electrical wiring. Clear memory of the processor and repeat procedure of reading of diagnostic codes. If no changes (towards improvement) happened, replace assembly of the module of management of VDC. At emergence of new codes pass to the corresponding dough. If refusal did not repeat, therefore, malfunction was temporary, - once again make sure of reliability of fastening of all contact connections.

At repeated record in memory of the processor of a code 71 switch off ignition, replace the sensor of an angle of rotation of a steering wheel and repeat procedure of the previous paragraph.

Violation of serviceability of functioning of the sensor of the taking-away moment (DTC 72)

The scheme of connection of the sensor of the taking-away moment / cross overloads is given in an illustration.


 the car vizheniye on sand or off road terrain (not on dirt) can lead to record in memory of the processor of codes 71 and 72.


Tire out the car on a platform with an equal covering, bring forward wheels into rectilinear situation and check correctness of centering of a steering wheel. If violation of centering does not exceed 5 °, pass to the following stage of check, otherwise center landing of a wheel.

Check correctness of installation and reliability of fixing of the sensor of withdrawal / cross overloads. In case of need make the corresponding corrections.

Switch off ignition, disconnect an electrical wiring from the sensor, then again turn the ignition key in the situation ON and measure tension between the plug No. 3 of the R100 socket of the sensor and mass of the chassis. If the result of measurement does not exceed the limit of the range of 10 ÷ 15 V, the following two stages of check can be passed.

Switch off ignition, disconnect an electrical wiring from the module of management of VDC, uncover contact knot, then again connect the socket. Include ignition and measure tension between the plug No. 63 of the F87 socket and mass of the chassis. If the result of measurement does not exceed the limit of the range of 10 - 15 V, repair an electrical wiring between the sensor and the module of management, otherwise pass to the following stage of check.

Check quality and reliability of fixing of contact connections, in case of need make the corresponding corrections, or replace the module of management of VDC.

Measure resistance between the plug No. 6 of the R100 socket and mass of the chassis. If the result of measurement makes less than 0.5 Ohms, the following two stages of check can be lowered.

Disconnect an electrical wiring from the module of management of VDC, uncover contact knot, then again connect the socket. Measure resistance between the plug No. 64 of the F87 socket and mass of the chassis. If the result of measurement makes less than 0.5 Ohms, repair an electrical wiring between the sensor and the module of management, otherwise pass to the following stage of check.

Check reliability of contact connections of an electrical wiring, make necessary recovery repair, or replace the module of management of VDC.

Disconnect an electrical wiring from the module of management of VDC and measure resistance between plugs No. No. 65, 66 and 67 of the F87 socket and No. No. 4, 1 and 2 of the R100 socket of the sensor respectively. If the result of measurement makes less than 0.5 Ohms, pass to the following stage of check, otherwise repair an electrical wiring between the sensor and the module of management.

Measure resistance between plugs No. No. 65, 66 and 67 of the F87 socket and mass of the chassis. If the result of measurement makes more than 1 megohm, pass to the following stage of check, otherwise repair an electrical wiring between the sensor and the module of management.

Measure tension between plugs No. No. 65, 66 and 67 of the F87 socket and mass of the chassis. If the result of measurement makes less than 0.5 In, pass to the following stage of check, otherwise repair an electrical wiring between the sensor and the module of management.

Include ignition and repeat the check described in the previous paragraph. If the result of measurement makes less than 0.5 In, pass to the following stage of check, otherwise repair an electrical wiring between the sensor and the module of management.

Switch off ignition, install the withdrawal sensor / cross loads of a body element, restore initial connection of all sockets, then again turn the ignition key in the situation ON and measure tension between plugs No. No. 66 and 64 of the F87 socket. If the result of change does not exceed the limit of range 2.1 ÷ 2.9 In, pass to the following stage of check, otherwise replace the withdrawal sensor / cross overloads.

Include ignition and on an oscillograph check a form of the signal developed by the sensor, - the device is connected to No. No. 67 plugs (+) and 64 (-) of the F87 socket. At positive result pass to the following stage of check, otherwise replace the module of management of VDC.

Connect an oscillograph between No. No. 65 plugs (+) and 64 (-) of the F87 socket and repeat check. If a signal as it should be, replace the module of management, otherwise replace the withdrawal sensor / cross overloads.

Violation of serviceability of functioning of the sensor of cross overloads (DTC 73)

Check correctness of installation and reliability of fixing of the sensor of withdrawal / cross overloads. In case of need make the corresponding corrections.

Switch off ignition, remove the central console (see the Head Kuzov), disconnect an electrical wiring from the sensor, then again turn the ignition key in the situation ON and measure tension between plugs No. 3 and No. 6 of the R100 socket of the sensor and mass of the chassis. If the result of measurement does not exceed the limit of the range of 10 ÷ 15 V, pass to the following stage of check, otherwise repair an electrical wiring between the sensor and the module of management of VDC.

Switch off ignition and measure resistance between plugs No. 3 and No. 5 of the sensor. If the result of measurement does not exceed the limit of the range of 4.3 ÷ 4.9 kOhm, pass to the following stage of check, otherwise replace the sensor.

Connect an electrical wiring to the sensor and disconnect it from the module of management of VDC, then measure resistance between plugs No. 63 and No. 70 of the F87 socket. If the result of measurement does not exceed the limit of the range of 4.3 ÷ 4.9 kOhm, pass to the following stage of check, otherwise repair an electrical wiring between the sensor and the module of management of VDC.

Disconnect an electrical wiring from the sensor and measure resistance between plugs No. No. 63, 70 and 64 of the F87 socket and mass of the chassis. If the result of measurement makes more than 1 megohm, pass to the following stage of check, otherwise repair an electrical wiring between the sensor and the module of management of VDC.

Measure tension between plugs No. No. 63, 70 and 64 of the F87 socket and mass of the chassis. If the result of measurement makes less than 1 V, pass to the following stage of check, otherwise repair an electrical wiring between the sensor and the module of management of VDC.

Include ignition and repeat the check described in the previous paragraph. If the result of measurement makes less than 1 V, pass to the following stage of check, otherwise repair an electrical wiring between the sensor and the module of management of VDC.

Switch off ignition, remove the sensor from the car and connect to it an electrical wiring. Also connect an electrical wiring to the module of management of VDC. Include ignition and measure tension between plugs No. 5 (+) and No. 6 (-) of the R100 socket. If the result of measurement does not exceed the limit of range 2.3 ÷ 2.7 In, pass to the following stage of check, otherwise replace the sensor.

Incline the sensor under 90 ° to the left and repeat the previous measurement. If the result of measurement does not exceed the limit of range 3.3 ÷ 3.7 In, pass to the following stage of check, otherwise replace the sensor.

Incline the sensor under 90 ° to the right and repeat check. If the result of measurement does not exceed the limit of range 1.3 ÷ 1.7 In, pass to the following stage of check, otherwise replace the sensor.

Check quality of contact connections and reliability of fixing of sockets. In case of need make the corresponding corrections.

Restore initial connection of an electrical wiring. Clear memory of the processor and repeat procedure of reading of diagnostic codes. If no changes (towards improvement) happened, replace assembly of the module of management of VDC. At emergence of new codes pass to the corresponding dough. If refusal did not repeat, therefore, malfunction was temporary, - once again make sure of reliability of fastening of all contact connections.

Violation of serviceability of functioning of the sensor of pressure (DTC 74)

The scheme of connection of the sensor of pressure is given in an illustration.


Switch off ignition, disunite contact couple of F91/VDC5 of the hydromodulator and measure resistance between the plug No. 15 of the F91 socket and mass of the chassis. If the result of measurement makes less than 0.5 Ohms, the following two stages of check can be lowered.

Switch off ignition, disconnect an electrical wiring from the module of management of VDC, uncover contact knot of the module, then again connect the socket and measure resistance between the plug No. 76 of the F87 socket and mass of the chassis. If the result of measurement makes less than 0.5 Ohms, replace an electrical wiring on a chain site between the module of management and the VDC hydromodulator, otherwise pass to the following stage of check.

Check quality of contact connections and reliability of fastening of sockets, in case of need make the corresponding corrections, or replace the module of management of VDC.

Include ignition and measure tension between plugs No. 16 (+) and 15 (-) of the F91 socket. If the result of measurement does not exceed the limit of range 4.75 ÷ 5.25 In, the following two stages of check can be lowered.

 Performance of this check can lead to record in memory of the processor of the DTC 51 code.


Switch off ignition, disconnect an electrical wiring from the module of management of VDC, uncover contact knot of the module (see illustrations 41.245a and 41.245b), then again connect the socket, include ignition and measure tension between plugs No. 78 (+) and No. 76 (-) of the F87 socket. If the result of measurement does not exceed the limit of range 4.75 ÷ 5.25 In, replace an electrical wiring on a chain site between the module of management and the VDC hydromodulator, otherwise pass to the following stage of check.

Check quality of contact connections and reliability of fastening of sockets, in case of need make the corresponding corrections, or replace the module of management of VDC.

Switch off ignition, disconnect an electrical wiring from the module of management of VDC and measure resistance between plugs No. No. 13 and 14 of the F91 socket and mass of the chassis. If the result of measurement makes more than 1 megohm, pass to the following stage of check, otherwise repair an electrical wiring on a chain site between the module of management and the VDC hydromodulator.

Measure tension between plugs No. No. 13 and 14 of the F91 socket and mass of the chassis. If the result of measurement makes less than 0.5 In, pass to the following stage of check, otherwise repair an electrical wiring on a chain site between the module of management and the VDC hydromodulator.

Include ignition and repeat the check described in the previous paragraph. If the result of measurement makes less than 0.5 In, pass to the following stage of check, otherwise repair an electrical wiring on a chain site between the module of management and the VDC hydromodulator.

Switch off ignition, disconnect an electrical wiring from the module of management of VDC, uncover contact knot of the module, then again connect the socket, include ignition and measure tension between No. No. 77 plugs (+) both No. 36 (+) and the plug No. 76 (-) of the F87 socket. If the result of measurement does not exceed the limit of range 0.48 ÷ 0.72 In, pass to the following stage of check, otherwise replace the VDC hydromodulator.

Check for existence of signs of development of leaks a hydraulic path on a site between GTTs and the VDC hydromodulator. In case of detection of leaks tighten the corresponding sockets, differently pass to the following stage of check.

Check GTTs pressure. At positive results of check pass to the following stage of check, otherwise replace GTTs.

Measure a difference between provisions of a pedal of a foot brake in the released situation and when squeezing with effort of 50 kgfs. If the result of measurement makes no more than 95 mm, pass to the following stage of check, otherwise pump over brake system (see the Section Pumping of a Hydraulic Path of Brake System).

Squeeze out a pedal of a foot brake with effort of 50 kgfs and measure tension between No. No. 77 plugs (+) (And) both No. 36 (+) (In) and the plug No. 76 (-) of the F87 socket. If the difference of results of measurements And and In does not exceed 0.2 B, pass to the following stage of check, otherwise replace the VDC hydromodulator.

Check quality of contact connections and reliability of fixing of sockets. In case of need make the corresponding corrections.

Restore initial connection of an electrical wiring. Clear memory of the processor and repeat procedure of reading of diagnostic codes. If no changes (towards improvement) happened, replace assembly of the module of management of VDC. At emergence of new codes pass to the corresponding dough. If refusal did not repeat, therefore, malfunction was temporary, - once again make sure of reliability of fastening of all contact connections.

Check of signals of input input of the module of management of VDC

Scheme of electric connections of ABS

1 — the Module of management of VDC
2 — the Assembly block of the relay
3 — the Valvate relay
4 — the electric motor Relay
5 — Gidromodulyator
6 — the Inlet electromagnetic valve of the left forward wheel
7 — the Final electromagnetic valve of the left forward wheel
8 — the Inlet electromagnetic valve of the right forward wheel
9 — the Final electromagnetic valve of the right forward wheel
10 — the Inlet electromagnetic valve of the left back wheel
11 — the Final electromagnetic valve of the left back wheel
12 — the Inlet electromagnetic valve of the right back wheel
13 — the Final electromagnetic valve of the right back wheel
14 — Primary soaking-up electromagnetic valve
15 — Primary locking electromagnetic valve
16 — the Secondary soaking-up electromagnetic valve
17 — the Secondary locking electromagnetic valve
18 — the Electric motor
19 — Primary sensor of pressure
20 — the Secondary sensor of pressure

21 — the VDC OFF Switch
22 — the Control lamp of ABS
23 — the Control lamp of VDC
24 — the Alarm indicator of operation of VDC
25 — the Alarm indicator of shutdown of VDC
26 — the ignition Relay
27 — the Battery
28 — the Left forward wheel sensor
29 — the Right forward wheel sensor
30 — the Left back wheel sensor
31 — the Right back wheel sensor
32 — the Sensor of the taking-away moment / cross overloads
33 — ECM
34 — TCM
35 — the Sensor of an angle of rotation of a steering wheel
36 — the Diagnostic socket
37 — the DLC Socket

The card of an arrangement of contact plugs in the socket of the module of management and the scheme of electric connections of the VDC components are provided on illustrations.

 At connection of the socket the sensor switch automatically closes among themselves plugs No. No. 53, 54 and 55 that leads to activation of control lamps of ABS and VDC. The list of signals of input-output of VDC is provided in the table.



Removal and installation of a cover of contact knot

Switch off ignition and disconnect an electrical wiring from the module of management of VDC.

Remove a fixing collar.

Uncover a cable clip.

Screw of fastening of a cover of contact knot of the module of management of VDC

1 — the Cover
2 — the Collar

3 — the Cover of a cable clip


Turn out the fixing screw and uncover.

Installation is made upside-down, - track correctness of hit of the directing cover uvulas in reception openings of the socket.


List of signals of input-output of the module of management of ABS

247 The form of the signal removed from separate plugs of ABS sensors is shown on illyustratsyakh.


Reading of codes of malfunctions (DTC) of VDC

The list of the DTC VDC codes is provided in Specifications on the present Chapter.

Reading of the DTC codes with application of SSM

After a conclusion to the screen of information on engine type press the YES key again.

In the field of "Brake Diagnosis" of the screen select item { Diagnostic Code (s) of Display } and confirm a choice with pressing of the YES key.

In the field "Diagnostic Code (s) Display" of the screen select item { Current Diagnostic Code (s) } (The current codes) or { History Diagnostic Code (s) } (Background), press the YES key.

Reading of the current data

Act as it is described in the corresponding subsection of the Section Problem Diagnostics of ABS adjusted for type of ABS — VDC system. The list of the output data is given in the table.

Contents

No. No. of plugs (+) - (-)

Signals of input-output

Value and conditions of measurement

Ignition switch

28-1

10 ÷ 15 V in the provision of a key of ON

Wheel sensors

Lion. the forward

49-19

0.12 ÷ 1 B

It is right. Forward

14-15

(At 20 Hz)

Lion. the back

16-17

It is right. Back

18-46

The sensor of the taking-away moment / cross overloads

Vykh. sensor signal poperech. overloads

70-64

2.2 ÷ 2.8 In in horizontal position of the car

Food

63-64

10 ÷ 15 V at the included ignition

Output signal of the sensor of withdrawal

65-64

(see the oscillogram on an illustration above)

Basic signal of the sensor of withdrawal

66-64

2.1 ÷ 2.9 In

Testing

67-64

Pulse signal of 5 ÷ 1 V lasting impulses of 40 ms (see the oscillogram on an illustration above)

Grounding

64

-

CAN line of communication (+)

81-1

Pulse signal 2.5 ÷ 1.5 In (see the oscillogram above)

CAN line of communication (-)

83-1

Pulse signal 3.5 ÷ 2.5 In (see the oscillogram above)

ECM

AET

21-1

10 ÷ 15 V at the included ignition and the motionless car

AEB

43-1

10 ÷ 15 V at the included ignition and the motionless car

AEC

08-1

Pulse signal 3.5 ÷ 1.5 In

EAS

75-1

Pulse signal 3.5 ÷ 1.5 In

EAC

45-1

Pulse signal of 10 ÷ 15 V

Turns

09-1

10 ÷ 15 V at the included ignition

Assembly block of the relay

Power supply of the valvate relay

27-1

10 ÷ 15 V at the included ignition

Winding of the valvate relay

47-1

No more than 1.5 In at the included ignition

Electric motor relay winding

22-1

No more than 1.5 In at activation of ABS/TCS/VDC and not less than 10 V at shutdown of ABS/TCS/VDC

Monitoring of an electric motor

10-1

No more than 10 V at activation of ABS/TCS/VDC and not less than 1.5 In at shutdown of ABS/TCS/VDC

Hydromodulator

Inlet valve lion. forward wheel

24-1

10 ÷ 15 V at the switched-off valve and less than 1.5 In at the switched-on valve

The inlet valve is right. forward wheel

30-1

Inlet valve of the left back wheel

31-1

Inlet valve of the right back wheel

23-1

Final valve lion. forward wheel

51-1

The final valve is right. forward wheel

03-1

Final valve of the left back wheel

04-1

The final valve is right. back wheel

50-1

Primary locking valve

25-1

Secondary locking valve

26-1

Primary soaking-up valve

29-1

The secondary soaking-up valve

02-1

Pressure sensor

Food

78-76

4.75 ÷ 5.27 In at the included ignition

Output signal of primary sensor

77-76

0.48 ÷ 0.72 In at the squeezed-out pedal of a foot brake

Grounding

76

-

Output signal of the secondary valve

36-76

0.48 ÷ 0.72 In at the released pedal of a foot brake

Alarm indicator of operation of VDC

32-1

Less than 1.5 In during 1.5 with the ambassador of inclusion of ignition and 10 ÷ 15 V later 1.5 with

Alarm indicator of shutdown of VDC (VDC OFF)

52-1

Less than 1.5 In during 1.5 with the ambassador of inclusion of ignition and 10 ÷ 15 V later 1.5 with

Control lamp of VDC

53-1

No more than 1.5 In at the included ignition and in an active condition of the indicator and 10 ÷ 15 V at the included ignition and the extinguished state

Control lamp of ABS

54-1

Less than 1.5 In during 1.5 with the ambassador of inclusion of ignition and 10 ÷ 15 V later 1.5 with

AT ABS2 signal)

31-23

Less than 1.5 In at the burning control lamp of ABS and more than 5.5 In the ambassador of its shutdown

Only models with AT

13

-

Diagnostic socket

Plug No. 8

74

-

Plug No. 5

11-1

Less than 1.5 In at reception of data

SSM Data are accepted

38-1

4.75 ÷ 5.25 In in the absence of transmitted data

Data are transferred

40-1

10 ÷ 15 V at the included ignition, 0 V when squeezing the button

Switch of deactivation of VDC (VDC OFF)

1

-

Line of grounding

55

-

Line of grounding


Reading of the DTC codes without application of SSM

The conclusion of the DTC codes is carried out by means of a control lamp of ABS, - see the corresponding subsection of the Section Problem Diagnostics of ABS.

Removal of codes from memory of the processor


With use of SSM

See the corresponding subsection in the Section Problem Diagnostics of ABS.

Without application of SSM

See the corresponding subsection of the Section Problem Diagnostics of ABS.