Brake Control Module (BCM) Diagnostic Trouble Code (DTC) Diagnostics: Other Volvo V70 II

Checking the control module and sensor connectors

HINT: The cause of the diagnostic trouble code (DTC) may be in the circuit for the stop lamp switch or for the pedal position sensor.

Scheme 130

Scheme 131

Scheme 132

1. Ignition off
2. Check the connectors for the brake control module (BCM), the stop lamp switch and the pedal position sensor. Check for contact resistance and oxidation
3. Reinstall the components, reconnect the connectors etc.
4. Ignition on
5. Read off the status of the stop lamp switch and the position of the pedal position sensor. Depress and release the brake pedal. The value must change between OFF and ON and the position of the pedal position sensor must be updated. Other information Disconnect the connector for the brake control module (BCM). To access the stop lamp switch, see «Stop lamp switch, replacing»(ref-406847-S16527767622011070100000) To access the pedal position sensor, see «PEDAL SENSOR POWER BRAKE BOOSTER, REPLACING»(ref-406847-S25221448392011070100000) See «Contents»(ref-406811-S37635188302011070100000) Select an option: The value for the stop lamp switch does not change Refer to «Checking the fuse, wiring and sensors»(ref-406990-S28599460832011070100000) The value for the pedal position sensor is not updated Refer to «Signal outside its permitted range»(ref-406990-S34638201802011070100000) These values are OK. FAULT NOT FOUND: Troubleshooting has been completed.

Scheme 133

Check that the fuse for the stop lamp circuit is intact. If the fuse is blown, first check the circuit for the stop lamp switch before replacing the fuse. Check for a short-circuit to supply.

If the fuse is intact, check the circuit for the stop lamp switch. Check for an open-circuit and a short-circuit to ground.

Remedy as necessary.

Other information

1. Connect the breakout box to the brake control module (BCM).
2. To connect the breakout box to the Engine control module (ECM), see: «Connecting the breakout box»(ref-406813-S31532077542011070100000)
3. See Connecting breakout box for Central Electronic Module (CEM). «Connecting the breakout box»(ref-406825-S28150951272011070100000)
4. To replace the stop lamp switch, see «Stop lamp switch, replacing»(ref-406847-S16527767622011070100000)
5. See «Checking wiring and terminals»(ref-406811-S00386154732011070100000)

Scheme 134

Was a fault detected?

1. YES Refer to «Verification»(ref-406990-S30953518132011070100000)
2. NO FAULT NOT FOUND: Troubleshooting has been completed.

Scheme 135

1. Ignition off
2. Check the brake control module (BCM) and pedal position sensor connectors. Check for contact resistance and oxidation
3. Reinstall the components, reconnect the connectors etc.
4. Connect the breakout box
5. Ignition on
6. Read off the signal from the pedal position sensor. Depress the brake pedal. Check that the pedal signal is updated. Other information Connect the breakout box. See «Contents»(ref-406811-S37635188302011070100000) .

Was the signal updated?

1. YES OKAY: Troubleshooting has been completed.
2. NO Refer to «Checking wiring and sensors»(ref-406990-S09019435922011070100000)

Verification

HINT: After carrying out the repair, check that the fault has been remedied.

1. Ignition off
2. Reinstall the components, reconnect the connectors etc.
3. Ignition on
4. Read off the signal from the pedal position sensor. Depress the brake pedal. Check that the pedal signal is updated.

Was the signal updated?

1. YES OKAY: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-406990-S02372639962011070100000)

Fault-tracing information

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

HINT: After carrying out the repair, check that the fault has been remedied.

1. Ignition off
2. Reconnect the connectors, reinstall components etc.
3. Ignition on
4. Read off the status of the stop lamp switch. Depress and release the brake pedal. The value must change between OFF and ON.

Does the value change?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-406990-S02372639962011070100000)

HINT: The cause of the diagnostic trouble code (DTC) may be in the circuit for the stop lamp switch or for the pedal position sensor.

1. Ignition off
2. Check the connectors for the brake control module (BCM), the stop lamp switch and the pedal position sensor. Check for contact resistance and oxidation
3. Reinstall the components, reconnect the connectors etc.
4. Ignition on
5. Read off the status of the stop lamp switch and the position of the pedal position sensor. Depress and release the brake pedal. The value must change between OFF and ON and the position of the pedal position sensor must be updated. Other information Disconnect the connector for the brake control module (BCM). To access the stop lamp switch, see «Stop lamp switch, replacing»(ref-406847-S16527767622011070100000) To access the pedal position sensor, see «PEDAL SENSOR POWER BRAKE BOOSTER, REPLACING»(ref-406847-S25221448392011070100000) See «Contents»(ref-406811-S37635188302011070100000) Select an option: The value for the stop lamp switch does not change Refer to «Checking the fuse, wiring and sensors»(ref-406990-S36261129502011070100000) The value for the pedal position sensor is not updated Refer to «Signal outside its permitted range»(ref-406990-S01667038072011070100000) These values are OK. FAULT NOT FOUND: Troubleshooting has been completed.

Checking the connectors

1. Ignition off
2. Check the brake control module (BCM) and pedal position sensor connectors. Check for contact resistance and oxidation
3. Reinstall the components, reconnect the connectors etc.
4. Connect the breakout box
5. Ignition on
6. Read off the signal from the pedal position sensor. Depress the brake pedal. Check that the pedal signal is updated. Other information Connect the breakout box. See «Contents»(ref-406811-S37635188302011070100000) .

Was the signal updated?

1. YES OKAY: Troubleshooting has been completed.
2. NO Refer to «Checking wiring and sensors»(ref-406990-S19304310552011070100000)

HINT: After carrying out the repair, check that the fault has been remedied.

1. Ignition off
2. Reinstall the components, reconnect the connectors etc.
3. Ignition on
4. Read off the signal from the pedal position sensor. Depress the brake pedal. Check that the pedal signal is updated.

Was the signal updated?

1. YES OKAY: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-406990-S39733363372011070100000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

HINT: After carrying out the repair, check that the fault has been remedied.

1. Ignition off
2. Reconnect the connectors, reinstall components etc.
3. Ignition on
4. Read off the status of the stop lamp switch. Depress and release the brake pedal. The value must change between OFF and ON.

Does the value change?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-406990-S39733363372011070100000)

1. Ignition off
2. Check the connectors for the brake control module (BCM), pedal position sensor and brake pressure sensor. Check for contact resistance and oxidation
3. Reinstall the components, reconnect the connectors etc.
4. Ignition on. Test drive the car. See «Test Drive Form (DSTC (dynamic stability and traction control) /brake control module), description»(ref-406985-S08515396952011070100000) . Read off the status of the diagnostic trouble code (DTC). Other information Connect the breakout box. To disconnect the pedal position sensor connector, see «PEDAL SENSOR POWER BRAKE BOOSTER, REPLACING»(ref-406847-S25221448392011070100000) To disconnect the connectors for the brake pressure sensors, see «Pressure sensor, master cylinder, replacing»(ref-406847-S11350847702011070100000) See «Checking wiring and terminals»(ref-406811-S00386154732011070100000)

Is the status of the diagnostic trouble code (DTC) intermittent?

1. YES OKAY: Troubleshooting has been completed.
2. NO Refer to «Checking the wiring and component»(ref-406990-S15840592332011070100000)

HINT: After carrying out the repair, check that the fault has been remedied.

1. Ignition off
2. Reconnect the connectors, reinstall components etc.
3. Test drive the car. See «Test Drive Form (DSTC (dynamic stability and traction control) /brake control module), description»(ref-406985-S08515396952011070100000)
4. Ignition on. Read off the status of the diagnostic trouble code (DTC).

Is the status of the diagnostic trouble code (DTC) intermittent?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-406990-S26971069432011070100000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

The fault should be diagnosed and remedied. Since this is not the case the fault-tracing process has failed.

Complete the fault-tracing for those fault or try again.

HINT: After carrying out the repair, check that the fault has been remedied.

1. Ignition off
2. Reconnect the components, connectors etc.
3. Ignition on
4. Activate the pump motor. Check that the pump motor starts and operates normally.

Is the pump OK?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-406990-S14951555932011070100000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Checking the pump motor circuit

1. Ignition off
2. Remove the brake control module (BCM)
3. Connect adapter «9512856»(ref-403953-S41548108102011061500000) to the power supply terminal on the pump motor
4. Connect the red fused cable to battery voltage. The black cable must be connected to ground. The pump motor must start when the cable is connected. Run for a maximum of 10 seconds. Replace the control module if the pump motor starts and seems to run normally. Replace the hydraulic unit if the pump motor does not start. Other information To replace the control module, see «Brake Control Module (BCM), replacing»(ref-406847-S13549546932011070100000) To replace the hydraulic unit, see «HYDRAULIC UNIT, REPLACING»(ref-406847-S21776300912011070100000) .

1. Continue Refer to «Verification»(ref-406990-S09748076682011070100000)

HINT: After carrying out the repair, check that the fault has been remedied.

1. Ignition off
2. Reconnect the components, connectors etc.
3. Ignition on
4. Activate the pump motor. Check that the pump motor starts and operates normally.

Is the pump OK?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-406990-S42045738062011070100000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

1. Ignition off
2. Remove the brake control module (BCM)
3. Connect adapter «9512856»(ref-403953-S41548108102011061500000) to the power supply terminal on the pump motor
4. Connect the red fused cable to battery voltage. The black cable must be connected to ground. The pump motor must start when the cable is connected. Run for a maximum of 10 seconds. Replace the control module if the pump motor starts and seems to run normally. Replace the hydraulic unit if the pump motor does not start. Other information To replace the control module, see «Brake Control Module (BCM), replacing»(ref-406847-S13549546932011070100000) To replace the hydraulic unit, see «HYDRAULIC UNIT, REPLACING»(ref-406847-S21776300912011070100000) .

1. Continue Refer to «Verification»(ref-406990-S34050213382011070100000)

HINT: After carrying out the repair, check that the fault has been remedied.

1. Ignition off
2. Reconnect the components, connectors etc.
3. Ignition on
4. Activate the pump motor. Check that the pump motor starts and operates normally.

Is the pump OK?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-406990-S37468166932011070100000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Checking the function of the hydraulic valves

1. Ignition off
2. Check the brake control module (BCM) connector. Check for contact resistance and oxidation
3. Reconnect the components, connectors etc.
4. Ignition on. Try to activate the hydraulic valves. There should be a "ticking" noise. Other information Disconnect the control module. See «Contents»(ref-406811-S37635188302011070100000)

Can the valves be activated?

1. YES OKAY: Troubleshooting has been completed.
2. NO Refer to «Replacing the control module and programming»(ref-406990-S16554202122011070100000)

Replacing the control module and programming

For further information about programming and replacing the control module, see Brake Control Module (BCM), replacing .

The diagnostic trouble code (DTC) can be generated in some cases after the brake control module (BCM) has been reprogrammed. If this is the case, the brake control module (BCM) must be configured.

Was the diagnostic trouble code (DTC) generated after the brake control module (BCM) was reprogrammed?

1. YES Refer to «Checking the car configuration»(ref-406990-S03904748142011070100000)
2. NO Refer to «Checking diagnostic trouble codes (DTCs) in the central electronic module (CEM)»(ref-406990-S04098712812011070100000)

Checking the software

1. Ignition on
2. Read off the software version from the brake control module (BCM). Check that the diagnostic number corresponds to the car configuration. If the software does not correspond to the car configuration, make a bookmark and cancel the fault-tracing. Then go to the software manager and download the correct software. Then resume the fault-tracing.

Was the control module programmed with the correct software?

1. YES Refer to «Checking the car configuration»(ref-406990-S03904748142011070100000)
2. NO Refer to «Erasing diagnostic trouble codes (DTCs)»(ref-406990-S23720079762011070100000)

Checking the car configuration

1. Ignition on
2. Read off the car configuration from the central electronic module (CEM). Check that the all the car functions are in the list, e.g. type of brake system, four wheel drive etc. See the example below for cars with DSTC. Anti-lock brakes = ABS DSTC .

Does the car equipment correspond to the car configuration?

1. YES FAULT NOT FOUND: Troubleshooting has been completed.
2. NO Refer to «Checking the brake system»(ref-406990-S37619088312011070100000)

Checking the brake system

Does the car have TRACS, STC or DSTC?

1. YES Refer to «Resetting and configuring the brake control module (BCM)»(ref-406990-S39424544322011070100000)
2. NO Refer to «Resetting and configuring the control module»(ref-406990-S29661926912011070100000)

In case of this defect, troubleshooting is not followed by verification.

The information can be displayed again or the fault-tracing for this fault can be interrupted.

Checking the component

1. Ignition off. Check that the active yaw control sensor is securely installed on the bracket under the passenger seat. Check that the bracket is not bent or damaged in any other way. Remedy as necessary. Other information To access or replace the active yaw control sensor, see «ACTIVE YAW CONTROL SENSOR, REPLACING»(ref-406847-S36312531992011070100000) .

1. Continue Refer to «Verification»(ref-406990-S17115561772011070100000)

HINT: After carrying out the repair, check that the fault has been remedied.

1. Ignition off
2. Reconnect the connectors, reinstall components etc.
3. Test drive the car. See «Test Drive Form (DSTC (dynamic stability and traction control) /brake control module), description»(ref-406985-S08515396952011070100000)
4. Ignition on. Read off the status of the diagnostic trouble code (DTC).

Is the status of the diagnostic trouble code (DTC) intermittent?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-406990-S14199429502011070100000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Incorrect offset value

See Incorrect offset value

See Incorrect offset value

See Incorrect offset value

HINT: After carrying out the repair, check that the fault has been remedied.

1. Ignition off
2. Reconnect the connectors, reinstall components etc.
3. Test drive the car. See «Test Drive Form (DSTC (dynamic stability and traction control) /brake control module), description»(ref-406985-S08515396952011070100000)
4. Ignition on. Read off the status of the diagnostic trouble code (DTC).

Is the status of the diagnostic trouble code (DTC) intermittent?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-406990-S15579745202011070100000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Faulty signal

See Faulty signal

See Faulty signal

See Faulty signal

Intermittent fault

HINT: The status of the diagnostic trouble code (DTC) indicates that the brake control module has previously registered a fault but that the fault is not active.

Check the connectors of the brake control module (BCM) and the differential electronic module (DEM) for contact resistance and oxidation.

Also check that the wiring for CAN communication is not too close to a source of interference such as a carphone etc.

Remedy as necessary.

Other information

1. To connect the breakout box, see
2. See «Contents»(ref-406811-S37635188302011070100000) .

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

HINT: After carrying out the repair, check that the fault has been remedied.

1. Ignition off
2. Reconnect the connectors, reinstall components etc.
3. Test drive the car. See «Test Drive Form (DSTC (dynamic stability and traction control) /brake control module), description»(ref-406985-S08515396952011070100000)
4. Ignition on. Read off the status of the diagnostic trouble code (DTC).

Is the status of the diagnostic trouble code (DTC) intermittent?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-406990-S13105954572011070100000)

If the fault is intermittent, do not verify fault-tracing if the fault does not recur.

It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

The diagnostic trouble code (DTC) indicates a fault in the Differential electronic module (DEM) or associated components. Select INFORMATION/FAULT TRACING/SYMPTOM RELATED TESTS/465 center differential (front and rear) , and fault-trace Checking the differential electronic module (DEM) and associated components.

The diagnostic trouble code (DTC) indicates a fault in the Differential electronic module (DEM) or associated components. Fault trace DTC for Differential electronic module (DEM). If no DTC is stored, select INFORMATION/FAULT TRACING/SYMPTOM RELATED TESTS/465 CENTRE DIFFERENTIAL , and fault-trace Checking the differential electronic module (DEM) and associated components.

HINT: The status of the diagnostic trouble code (DTC) indicates that the brake control module has previously registered a fault but that the fault is not active.

Check the connectors for the brake control module and the central electronic module. Check for contact resistance and oxidation.

Also check that the wiring for CAN communication is not too close to a source of interference such as a carphone etc.

Remedy as necessary.

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

HINT: After carrying out the repair, check that the fault has been remedied.

1. Ignition off
2. Reconnect the connectors, reinstall components etc.
3. Test drive the car. See «Test Drive Form (DSTC (dynamic stability and traction control) /brake control module), description»(ref-406985-S08515396952011070100000)
4. Ignition on. Read off the status of the diagnostic trouble code (DTC).

Is the status of the diagnostic trouble code (DTC) intermittent?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-406990-S21314085562011070100000)

If the fault is intermittent, do not verify fault-tracing if the fault does not recur.

It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

HINT: The status of the diagnostic trouble code (DTC) indicates that the brake control module has previously registered a fault but that the fault is not active.

Check the connectors for the brake control module and the engine control module (ECM). Check for contact resistance and oxidation.

Also check that the wiring for CAN communication is not too close to a source of interference such as a carphone etc.

Remedy as necessary.

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

HINT: After carrying out the repair, check that the fault has been remedied.

1. Ignition off
2. Reconnect the connectors, reinstall components etc.
3. Test drive the car. See «Test Drive Form (DSTC (dynamic stability and traction control) /brake control module), description»(ref-406985-S08515396952011070100000)
4. Ignition on. Read off the status of the diagnostic trouble code (DTC).

Is the status of the diagnostic trouble code (DTC) intermittent?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-406990-S37117139902011070100000)

The diagnostic trouble code (DTC) indicates that the fault is engine related.

Read off diagnostic trouble codes (DTCs) from the engine control module (ECM) and fault-trace according to the relevant information.

HINT: After carrying out the repair, check that the fault has been remedied.

1. Ignition off
2. Reinstall the components, reconnect the connectors etc.
3. Ignition on
4. Read off the signal from the pedal position sensor. Depress the brake pedal. Check that the signal is updated. The signal must increase as the brake pedal is pressed further. Depress the brake pedal at different speeds. Check that the signal is updated.

Was the signal updated?

1. YES OKAY: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-406990-S23064816732011070100000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

1. Ignition on
2. Set the steering wheel to the straight forward position
3. Read off the steering wheel angle. With the steering wheel and the front wheels in the straight ahead position, the value for the steering wheel angle must be approximately 0o. If the steering wheel angle does not correspond to the position of the steering wheel, reset the steering wheel angle and calibrate the dynamic stability and traction control (DSTC) system. If the front wheel alignment does not correspond to the position of the steering wheel, adjust the front end and calibrate the dynamic stability and traction control (DSTC) system. Other information To reset the steering wheel angle sensor, see «Contact reel / steering wheel angle sensor, replacing»(ref-406837-S12925990912011070100000) To adjust the front end, see «Wheel alignment, checking / adjusting»(ref-406988-S29371039442011070100000) .

Were the steering wheel and front wheel alignment OK?

1. YES Refer to «Intermittent fault»(ref-406990-S33636324092011070100000)
2. NO Refer to «Calibration»(ref-406990-S24634188652011070100000)

HINT: The status of the diagnostic trouble code (DTC) indicates that the brake control module (BCM) has previously registered a fault but that the fault is not active.

Check the connectors for the brake control module (BCM) and the control module for the steering wheel angle sensor. Check for contact resistance and oxidation.

Also check that the wiring for CAN communication is not too close to a source of interference such as a carphone etc.

Remedy as necessary.

Other information

1. See «Contents»(ref-406811-S37635188302011070100000)

1. Continue Refer to «Information»(ref-406990-S39751811772011070100000)

HINT: After carrying out the repair, check that the fault has been remedied.

1. Ignition off
2. Reconnect the connectors, reinstall components etc.
3. Test drive the car. See «Test Drive Form (DSTC (dynamic stability and traction control) /brake control module), description»(ref-406985-S08515396952011070100000)
4. Ignition on. Read off the status of the diagnostic trouble code (DTC).

Is the status of the diagnostic trouble code (DTC) intermittent?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-406990-S02296245292011070100000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

If the fault is intermittent, do not verify fault-tracing if the fault does not recur.

It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

The control module for the steering angle sensor is initiated when the steering wheel is turned more than 5° in any direction. Diagnostic trouble code (DTC) BCM-0108 may be stored if the car has been turned for more than 2 minutes without turning the steering wheel. Ask the customer whether this is the case.

If this is not the case, read off diagnostic trouble codes (DTCs) from the steering angle sensor and fault trace according to the information for this system.

Control unit for the steering wheel angle sensor (SAS). Internal fault

See Control unit for the steering wheel angle sensor (SAS). Internal fault

Information

The diagnostic trouble code shows that there is an internal fault in the control unit for the steering wheel angle sensor (SAS). Read the diagnostic trouble codes from the control unit for the steering wheel angle sensor (SAS) and troubleshoot as described by the information for the system.

Scheme 136

AYC-stabilization: takes too long

See AYC stabilization takes too long

HINT: The diagnostic trouble code (DTC) may be stored when downloading software, in which case it only needs to be erased.

Note. Only erase the diagnostic trouble code (DTC) if it was stored when downloading software.

1. Ignition on. Erase diagnostic trouble codes (DTCs).

1. Continue Refer to «Calibrating the sensor»(ref-406990-S18639843492011070100000)

HINT: After carrying out the repair, check that the fault has been remedied.

1. Ignition off
2. Reconnect the connectors, reinstall components etc.
3. Test drive the car. See «Test Drive Form (DSTC (dynamic stability and traction control) /brake control module), description»(ref-406985-S08515396952011070100000)
4. Ignition on. Read off the status of the diagnostic trouble code (DTC).

Is the status of the diagnostic trouble code (DTC) intermittent?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-406990-S01615136082011070100000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Checking the transmission

Is the car equipped with automatic transmission?

1. YES Refer to «Checking wiring and terminals (automatic transmissions)»(ref-406990-S14781373362011070100000)
2. NO Refer to «Signal too low. Permanent fault»(ref-406990-S31485487672011070100000)

Checking the cable

Check the cable between the central electronic module (CEM) terminal #1A and the back-up (reversing) lamp switch terminal #2 (3/10). Check for a short-circuit to ground.

Remedy as necessary.

Other information

1. For information about the central electronic module (CEM), see «Central electronic module (CEM), replacing»(ref-441112-S09232038292011121500000)
2. To access the back-up (reversing) lamp switch, see «Back-up lamp switch, replacing»(ref-441132-S06777791742011121500000)
3. See «Checking wiring and terminals»(ref-406811-S00386154732011070100000) .

Scheme 137

Scheme 138

Was a fault detected?

1. YES Refer to «Verification»(ref-406990-S08792857122011070100000)
2. NO Refer to «Replacing the back-up (reversing) lamp switch»(ref-406990-S09526333262011070100000)

Replacing the back-up (reversing) lamp switch

Try replacing the back-up (reversing) lamp switch.

Other information

1. To access the back-up (reversing) lamp switch, see «Back-up lamp switch, replacing»(ref-441132-S06777791742011121500000) .

1. Continue Refer to «Verification»(ref-406990-S08792857122011070100000)

HINT: After the repair it is necessary to check that the fault has been rectified.

1. Ignition off.
2. Connect connectors, install components etc.
3. Ignition on. Reversing light should not come on when gears 1 to 5 are selected.

Does it work?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-406990-S19330931392011070100000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

HINT: After carrying out the repair, check that the fault has been remedied.

1. Ignition off
2. Reconnect the connectors, reinstall components etc.
3. Test drive the car. See «Test Drive Form (DSTC (dynamic stability and traction control) /brake control module), description»(ref-406985-S08515396952011070100000)
4. Ignition on. Read off the status of the diagnostic trouble code (DTC).

Is the status of the diagnostic trouble code (DTC) intermittent?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-406990-S19330931392011070100000)

Checking for contact resistance and oxidation

1. Ignition off
2. Check the connectors for the brake control module (BCM) and the active yaw control sensor. Check for contact resistance and oxidation
3. Ignition on
4. Test drive. See «Test Drive Form (DSTC (dynamic stability and traction control) /brake control module), description»(ref-406985-S08515396952011070100000)
5. Read off diagnostic trouble codes (DTCs). If the status of the diagnostic trouble code (DTC) is intermittent, the cause of the fault was probably contact resistance or oxidation in the connectors for the control module or the active yaw control sensor. Other information Access the control module connector. To access the active yaw control sensor, see «ACTIVE YAW CONTROL SENSOR, REPLACING»(ref-406847-S36312531992011070100000) See «Contents»(ref-406811-S37635188302011070100000) .

Is the status of the diagnostic trouble code (DTC) intermittent?

1. YES OKAY: Troubleshooting has been completed.
2. NO Refer to «Checking the wiring»(ref-406990-S00997843032011070100000)

HINT: After carrying out the repair, check that the fault has been remedied.

1. Ignition off
2. Reconnect the connectors, reinstall components etc.
3. Test drive the car. See «Test Drive Form (DSTC (dynamic stability and traction control) /brake control module), description»(ref-406985-S08515396952011070100000)
4. Ignition on. Read off the status of the diagnostic trouble code (DTC).

Is the status of the diagnostic trouble code (DTC) intermittent?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-406990-S15303989512011070100000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

HINT: After carrying out the repair, check that the fault has been remedied.

1. Ignition off
2. Reconnect the connectors, reinstall components etc.
3. Test drive the car. See «Test Drive Form (DSTC (dynamic stability and traction control) /brake control module), description»(ref-406985-S08515396952011070100000)
4. Ignition on. Read off the status of the diagnostic trouble code (DTC).

Is the status of the diagnostic trouble code (DTC) intermittent?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-406990-S42676188472011070100000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

The fault should be diagnosed and remedied. Since this is not the case the fault-tracing process has failed.

Complete the fault-tracing for those fault or try again.

checking the active yaw control sensor

The diagnostic trouble code (DTC) indicates that an active yaw control sensor for a four wheel drive car has been installed in a two wheel drive car or vice-versa.

Replace with the correct sensor. See ACTIVE YAW CONTROL SENSOR, REPLACING .

1. Continue Refer to «Verification»(ref-406990-S23316812852011070100000)

HINT: After carrying out the repair, check that the fault has been remedied.

1. Ignition off
2. Reconnect the connectors, reinstall components etc.
3. Test drive the car. See «Test Drive Form (DSTC (dynamic stability and traction control) /brake control module), description»(ref-406985-S08515396952011070100000)
4. Ignition on. Read off the status of the diagnostic trouble code (DTC).

Is the status of the diagnostic trouble code (DTC) intermittent?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-406990-S11721269072011070100000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

HINT: After carrying out the repair, check that the fault has been remedied.

1. Ignition off
2. Reconnect the connectors, reinstall components etc.
3. Test drive the car. See «Test Drive Form (DSTC (dynamic stability and traction control) /brake control module), description»(ref-406985-S08515396952011070100000)
4. Ignition on. Read off the status of the diagnostic trouble code (DTC).

Is the status of the diagnostic trouble code (DTC) intermittent?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-406990-S09018257102011070100000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

HINT: After carrying out the repair, check that the fault has been remedied.

1. Ignition off
2. Reconnect the connectors, reinstall components etc.
3. Test drive the car. See «Test Drive Form (DSTC (dynamic stability and traction control) /brake control module), description»(ref-406985-S08515396952011070100000)
4. Ignition on. Read off the status of the diagnostic trouble code (DTC).

Is the status of the diagnostic trouble code (DTC) intermittent?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-406990-S42009737272011070100000)

If the fault is intermittent, do not verify fault-tracing if the fault does not recur.

It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

Note. If diagnostic trouble codes (DTCs) other than BCM-0121, BCM-0125, BCM-0127 or BCM-0129 are stored in the brake control module (BCM), select cancel and fault trace these diagnostic trouble codes (DTCs) first.

1. Ignition off
2. Check the brake control module (BCM) and the active yaw control sensor connectors. Check for contact resistance and oxidation
3. Ensure that no sources of interference, such as a mobile telephone or radio receiver, are in the vicinity of the active yaw control sensor
4. Test drive the car. See the test drive schedule. See «Test Drive Form (DSTC (dynamic stability and traction control) /brake control module), description»(ref-406985-S08515396952011070100000)
5. Ignition on
6. Read off diagnostic trouble codes (DTCs). If the diagnostic trouble code (DTC) status is intermittent the cause of the fault was probably either contact resistance in the control module or active yaw control sensor connectors, or a source of interference too close to the sensor. Other information To remove the connector for the active yaw control sensor, see «ACTIVE YAW CONTROL SENSOR, REPLACING»(ref-406847-S36312531992011070100000) Remove the brake control module (BCM) connector.

Was the status of the diagnostic trouble code (DTC) permanent?

1. YES Refer to «Checking the wiring»(ref-406990-S38566327792011070100000)
2. NO OKAY: Troubleshooting has been completed.

HINT: After carrying out the repair, check that the fault has been remedied.

1. Ignition off
2. Reconnect the connectors, reinstall components etc.
3. Test drive the car. See «Test Drive Form (DSTC (dynamic stability and traction control) /brake control module), description»(ref-406985-S08515396952011070100000)
4. Ignition on. Read off the status of the diagnostic trouble code (DTC).

Is the status of the diagnostic trouble code (DTC) intermittent?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-406990-S32687282572011070100000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Checking the present value of the sensors

1. Ignition off
2. Check the connectors for the brake control module (BCM) and the active yaw control (AYC) sensor. Check for contact resistance. Check for oxidation
3. Ignition on
4. Read off the present value. Check the read off value for the relevant component against the value in the table below. Component Value Yaw rate sensor -6°/s - +6°/s Lateral accelerometer -1.7 m/s 2 - +1.7 m/s 2 Accelerometer -1.7 m/s 2 - +1.7 m/s 2 NOTE: The accelerometer can only be read off if the car is four wheel drive.

Are the present values OK?

1. YES OKAY: Troubleshooting has been completed.
2. NO Refer to «Checking the power supply»(ref-406990-S10327181722011070100000)

Checking the power supply

1. Ignition off
2. Connect the breakout box to the brake control module (BCM)
3. Ignition on. Check the power supply to the active yaw control sensor by connecting a voltmeter between terminals #6 (#A6) and #39 (#A39) on the breakout box. The voltage must be normal system voltage. Replace the control module if the voltage is incorrect. If the voltage is OK, check the power supply cables between the active yaw control sensor (AYC): terminal #3 and control module terminal #6 (#A6) terminal #5 and control module terminal #39 (terminal #A39). check for an open-circuit. Replace the active yaw control sensor if the wiring is OK. Other information Connect the breakout box. To replace the control module, see «Brake Control Module (BCM), replacing»(ref-406847-S13549546932011070100000) To access and replace the active yaw control sensor (AYC), see «ACTIVE YAW CONTROL SENSOR, REPLACING»(ref-406847-S36312531992011070100000) For information about signals, see «Signal specification, brake control module (BCM) with DSTC (dynamic stability and traction control)»(ref-406848-S12183644562011070100000) See «Contents»(ref-406811-S37635188302011070100000) .

1. Continue Refer to «Verification»(ref-406990-S02994547742011070100000)

HINT: After carrying out the repair, check that the fault has been remedied.

1. Ignition off
2. Reconnect the connectors, reinstall components etc.
3. Test drive the car. See «Test Drive Form (DSTC (dynamic stability and traction control) /brake control module), description»(ref-406985-S08515396952011070100000)
4. Ignition on. Read off the status of the diagnostic trouble code (DTC).

Is the status of the diagnostic trouble code (DTC) intermittent?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-406990-S26274872712011070100000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

1. Ignition off
2. Check the connectors for the brake control module (BCM) and the active yaw control sensor. Check for contact resistance and oxidation
3. Ignition on
4. Read off the present value. Check the read off value for the relevant component against the value in the table below. Component Value Yaw rate sensor -6°/s - +6°/s Lateral accelerometer -1.7 m/s 2 - +1.7 m/s 2 Accelerometer -1.7 m/s 2 - +1.7 m/s 2 NOTE: The accelerometer can only be read off if the car is four wheel drive.

Are the present values OK?

1. YES OKAY: Troubleshooting has been completed.
2. NO Refer to «Checking the power supply»(ref-406990-S31036308072011070100000)

1. Ignition off
2. Connect the breakout box to the brake control module (BCM)
3. Ignition on. Check the power supply to the active yaw control sensor by connecting a voltmeter between terminals #6 (#A6) and #39 (#A39) on the breakout box. The voltage must be normal system voltage. Replace the control module if the voltage is incorrect. If the voltage is OK check the power supply cables between the active yaw control sensor: terminal #3 and control module terminal #6 (#A6) terminal #5 and control module terminal #39 (terminal #A39). check for an open-circuit. Replace the active yaw control sensor if the wiring is OK. Other information Connect the breakout box. To replace the control module, see «Brake Control Module (BCM), replacing»(ref-406847-S13549546932011070100000) To access and replace the active yaw control sensor, see «ACTIVE YAW CONTROL SENSOR, REPLACING»(ref-406847-S36312531992011070100000) For information about signals, see «Signal specification, brake control module (BCM) with DSTC (dynamic stability and traction control)»(ref-406848-S12183644562011070100000) See «Contents»(ref-406811-S37635188302011070100000) .

1. Continue Refer to «Verification»(ref-406990-S42194938062011070100000)

HINT: After carrying out the repair, check that the fault has been remedied.

1. Ignition off
2. Reconnect the connectors, reinstall components etc.
3. Test drive the car. See «Test Drive Form (DSTC (dynamic stability and traction control) /brake control module), description»(ref-406985-S08515396952011070100000)
4. Ignition on. Read off the status of the diagnostic trouble code (DTC).

Is the status of the diagnostic trouble code (DTC) intermittent?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-406990-S11379642872011070100000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Signal outside its permitted range

See Signal outside its permitted range

See Signal outside its permitted range

See Signal outside its permitted range

Note. When cables to the brake pressure sensors are physically interchanged when installing, troubleshoot both sensors when trouble code BCM-0130 or BCM-0133 is detected.

Scheme 139

1. Ignition off
2. Check the brake control module (BCM) and the brake pressure sensor connectors. Check for contact resistance and oxidation
3. Reinstall the components, reconnect the connectors etc.
4. Ignition on
5. Read off the pressure in the brake system from the relevant pressure sensor
6. Depress the brake pedal. The brake pressure must increase with increased pedal pressure. If the brake pressure increases the cause of the fault was probably contact resistance or oxidation in the control module or pressure sensor connectors. Other information Remove the control module connector. See «Contents»(ref-406811-S37635188302011070100000)

Does the brake pressure increase?

1. YES OKAY: Troubleshooting has been completed.
2. NO Refer to «Checking the control module»(ref-406990-S00319980952011070100000)

Checking the control module

1. Ignition on
2. Pressure sensor connector disconnected
3. The breakout box connected. Check the voltage supply using a voltmeter: Pressure sensor 1 between terminal #A21 and terminal #A22 on the breakout box. Pressure sensor 2 between terminal #A18 and terminal #A19 on the breakout box. The voltage must be approximately 5 V. Replace the brake control module (BCM) if the voltage is incorrect. Other information Connect the breakout box. To replace the control module, see «Brake Control Module (BCM), replacing»(ref-406847-S13549546932011070100000) For information about signals, see «Signal specification, brake control module (BCM) with DSTC (dynamic stability and traction control)»(ref-406848-S12183644562011070100000) .

Was the voltage OK?

1. YES Refer to «Checking wiring and sensors»(ref-406990-S23070775482011070100000)
2. NO Refer to «Verification»(ref-406990-S09189565922011070100000)

HINT: After carrying out the repair, check that the fault has been remedied.

1. Ignition off
2. Reconnect the connectors, reinstall components etc.
3. Ignition on
4. Read off the pressure in the brake system from the relevant pressure sensor
5. Depress the brake pedal. The brake pressure must increase with increased pedal pressure.

Does the brake pressure increase?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-406990-S19859996792011070100000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Signal too low

See Signal too low

Note. When cables to the brake pressure sensors are physically interchanged when installing, troubleshoot both sensors when trouble code BCM-0136.

1. Ignition off
2. Check the brake control module (BCM) and the brake pressure sensor connectors. Check for contact resistance and oxidation
3. Reinstall the components, reconnect the connectors etc.
4. Ignition on
5. Read off the pressure from the brake system
6. Depress the brake pedal. The brake pressure must increase in both pressure sensors with increased pedal pressure. If the brake pressure increases for both pressure sensors, the cause of the fault was probably contact resistance or oxidation in the control module or pressure sensor connectors. Other information Access the control module connector. See «Contents»(ref-406811-S37635188302011070100000)

Does the pressure increase?

1. YES OKAY: Troubleshooting has been completed.
2. NO Refer to «Checking wiring and sensors»(ref-406990-S36633168932011070100000)

1. Ignition off
2. Reinstall the components, reconnect the connectors etc.
3. Ignition on
4. Read off the pressure in the brake system from the relevant pressure sensor
5. Depress the brake pedal. The brake pressure must increase with increased pedal pressure.

Does the brake pressure increase?

1. YES Refer to «Verification»(ref-406990-S16617142822011070100000)
2. NO Refer to «Information»(ref-406990-S02872974472011070100000)

HINT: After carrying out the repair, check that the fault has been remedied.

1. Ignition off
2. Reconnect the connectors, reinstall components etc.
3. Ignition on
4. Read off the pressure in the brake system from the relevant pressure sensor
5. Depress the brake pedal. The brake pressure must increase with increased pedal pressure.

Does the brake pressure increase?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-406990-S02872974472011070100000)

The fault should be diagnosed and remedied. Since this is not the case the fault-tracing process has failed.

Complete the fault-tracing for those fault or try again.

1. Ignition off
2. Check the connectors for the brake control module (BCM) and the active yaw control sensor. Check for contact resistance and oxidation
3. Ignition on
4. Wait approximately 60 seconds
5. Read off diagnostic trouble codes (DTCs). If the status of the diagnostic trouble code (DTC) is intermittent, the cause of the fault was probably contact resistance or oxidation in the connectors for the control module or the active yaw control sensor. Other information Access the control module connector. To access the active yaw control sensor, see «ACTIVE YAW CONTROL SENSOR, REPLACING»(ref-406847-S36312531992011070100000) See «Contents»(ref-406811-S37635188302011070100000)

Is the status of the diagnostic trouble code (DTC) intermittent?

1. YES OKAY: Troubleshooting has been completed.
2. NO Refer to «Checking the active yaw control sensor»(ref-406990-S06771653362011070100000)

1. Ignition off
2. Breakout box connected to the brake control module (BCM)
3. Ignition on
4. Read off the power supply to the brake control module (BCM). Check the power supply to the active yaw control sensor by connecting a voltmeter between control module terminals #6 (#A6) and #39 (#A39). The voltage must be approximately the same as the read off value for the brake control module (BCM). Replace the active yaw control sensor if the power supply to the sensor is OK. Remedy as necessary. Other information Connect the breakout box. To replace the active yaw control sensor, see «ACTIVE YAW CONTROL SENSOR, REPLACING»(ref-406847-S36312531992011070100000) For information about signals, see «Signal specification, brake control module (BCM) with DSTC (dynamic stability and traction control)»(ref-406848-S12183644562011070100000) .

Was the voltage OK?

1. YES Refer to «Checking the wiring»(ref-406990-S39503658202011070100000)
2. NO Refer to «Verification»(ref-406990-S30945030592011070100000)

HINT: After carrying out the repair, check that the fault has been remedied.

1. Ignition off
2. Reconnect the connectors, reinstall components etc.
3. Test drive the car. See «Test Drive Form (DSTC (dynamic stability and traction control) /brake control module), description»(ref-406985-S08515396952011070100000)
4. Ignition on. Read off the status of the diagnostic trouble code (DTC).

Is the status of the diagnostic trouble code (DTC) intermittent?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-406990-S06270667982011070100000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

1. Ignition off
2. Check the connectors of the brake control module (BCM) and the pressure build-up valve/pedal pressure sensor for contact resistance and oxidation.
3. Reinstall the components, reconnect the connectors etc.
4. Ignition on
5. Use the Activation function to activate the pressure build-up valve. A mechanical pumping sound should be audible from the engine compartment and the pedal should move slightly. Other information For removal of the control module connectors: See «Contents»(ref-406811-S37635188302011070100000)

Was the function OK?

1. YES OKAY: Troubleshooting has been completed.
2. NO Refer to «Checking wiring and sensors»(ref-406990-S22017733042011070100000)

HINT: After carrying out the repair, check that the fault has been remedied.

1. Ignition off
2. Reinstall the components, reconnect the connectors etc.
3. Ignition on
4. Use the Activation function to activate the pressure build-up valve. A mechanical pumping sound should be audible from the engine compartment and the pedal should move slightly.

Was the function OK?

1. YES OKAY: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-406990-S08063534692011070100000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

1. Ignition off
2. Check the brake control module (BCM) and pedal pressure sensor connectors. Check for contact resistance and oxidation
3. Reinstall the components, reconnect the connectors etc.
4. Ignition on
5. Read off the status of the pedal pressure sensor. The status must be OFF with the brake pedal unaffected and change to ON when the brake pedal is pressed. If the status changes, the cause of the fault was probably contact resistance or oxidation in the control module or in the pedal pressure sensor connectors.

Does the status change?

1. YES OKAY: Troubleshooting has been completed.
2. NO Refer to «Checking the wiring»(ref-406990-S34000130962011070100000)

1. Ignition off
2. Connect the breakout box to the cable harness (not control module side). Connect an ohmmeter between terminals #28 and #27 on the breakout box. When the brake pedal is not depressed the resistance must be infinite. When the brake pedal is depressed the resistance must be 0 ohms. Connect an ohmmeter between terminals #28 and #30 on the breakout box. When the brake pedal is not depressed the resistance should be 0 ohms. When the brake pedal is depressed the resistance should be infinite. Replace the power brake booster if the resistance is incorrect. Other information Connect the breakout box. To replace the power brake booster, see «POWER BRAKE BOOSTER, REPLACING»(ref-407019-S02557615762011070100000) .

Was the resistance OK?

1. YES FAULT NOT FOUND: Troubleshooting has been completed.
2. NO Refer to «Verification»(ref-406990-S42174203262011070100000)

HINT: After carrying out the repair, check that the fault has been remedied.

1. Ignition off
2. Reconnect the connectors, reinstall components etc.
3. Test drive the car. See «Test Drive Form (DSTC (dynamic stability and traction control) /brake control module), description»(ref-406985-S08515396952011070100000)
4. Ignition on. Read off the status of the diagnostic trouble code (DTC).

Is the status of the diagnostic trouble code (DTC) intermittent?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-406990-S12771653892011070100000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Visually checking the brakes

HINT: The diagnostic trouble code (DTC) indicates that the stability function has been active for too long.

Check the front and rear brakes. Check there is no overheating damage to brake caliper, brake pads or brake disc. Replace damaged components.

Tell the customer why the anti-spin function was temporarily blocked and why the ABS warning lamp was lit.

Other information

1. To remove or replace brake calipers, see «Brake calipers front, replacing»(ref-406847-S25117676152011070100000) and «Brake calipers rear, replacing»(ref-406847-S29149671992011070100000)
2. To remove or replace brake pad, see «Brake pads front, replacing»(ref-406847-S36468335502011070100000) and «Brake pads rear, replacing»(ref-406847-S05679940662011070100000)
3. To remove or replace brake disc, see «Brake disc front, replacing»(ref-406847-S02881809532011070100000) and «Brake discs rear, replacing»(ref-406847-S26418004232011070100000) .

See Faulty signal

HINT: Diagnostic trouble code (DTC) BCM-0148 can be stored when programming the brake control module. If this is the case, erase the diagnostic trouble code (DTC).

1. Ignition on
2. Erase the diagnostic trouble code (DTC) if it was stored during programming.

Was the diagnostic trouble code (DTC) stored when programming the brake control module?

1. YES OKAY: Troubleshooting has been completed.
2. NO Refer to «Checking diagnostic trouble codes (DTCs) in the central electronic module»(ref-406990-S13661759542011070100000)

The diagnostic trouble code (DTC) indicates that the fault is in the control module for the steering wheel angle sensor.

Fault-trace according to the relevant information. If no fault is found, replace the control module for the steering angle sensor.

HINT: The status of the diagnostic trouble code (DTC) indicates that the control module has previously registered a fault but that the fault is not now active.

Check the connectors for the brake control module and the control module for the steering wheel angle sensor. Check for contact resistance and oxidation.

Check that the communication wiring is not too close to a source of interference such as a carphone etc.

Remedy as necessary.

Other information

1. For connection of breakout box to Steering wheel angle sensor module (SAS), see: «Connecting the breakout box to the steering angle sensor»(ref-406846-S20574552882011070100000)
2. See «Contents»(ref-406811-S37635188302011070100000) .

1. Continue Refer to «Information»(ref-406990-S05226957362011070100000)

If the fault is intermittent, do not verify fault-tracing if the fault does not recur.

It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

Checking the control module and wheel sensor connectors

1. Ignition off
2. Check the brake control module (BCM) and stop (brake) lamp switch connectors. Check for contact resistance and oxidation
3. Reinstall the components, reconnect the connectors etc.
4. Ignition on
5. Read off the status of the stop lamp switch. Depress and release the brake pedal. The value must change between OFF and ON. If the value changes, the cause of the fault was loose connections in the control module or wheel sensor connectors. Other information Refer to relevant information about removing the brake control module (BCM) connector. To fault-trace the wiring and connections, see «Contents»(ref-406811-S37635188302011070100000) .

Does the value change?

1. YES OKAY: Troubleshooting has been completed.
2. NO Refer to «Checking the fuse, wiring and sensors»(ref-406990-S02775759342011070100000)

1. Ignition off
2. Reinstall the components, reconnect the connectors etc.
3. Ignition on
4. Read off the status of the stop lamp switch. Depress and release the brake pedal. The value must change between OFF and ON.

Does the value change?

1. YES OKAY: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-406990-S03101790962011070100000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

1. Ignition off
2. Check the brake control module (BCM) and stop (brake) lamp switch connectors. Check for contact resistance and oxidation
3. Reinstall the components, reconnect the connectors etc.
4. Ignition on
5. Read off the status of the stop lamp switch. Depress and release the brake pedal. The value must change between OFF and ON. If the value changes, the cause of the fault was loose connections in the control module or wheel sensor connectors. Other information Refer to relevant information about removing the brake control module (BCM) connector. To fault-trace the wiring and connections, see «Contents»(ref-406811-S37635188302011070100000) .

Does the value change?

1. YES OKAY: Troubleshooting has been completed.
2. NO Refer to «Checking the fuse, wiring and sensors»(ref-406990-S16680626852011070100000)

1. Ignition off
2. Reinstall the components, reconnect the connectors etc.
3. Ignition on
4. Read off the status of the stop lamp switch. Depress and release the brake pedal. The value must change between OFF and ON.

Does the value change?

1. YES OKAY: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-406990-S08816826912011070100000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

If the fault is intermittent, do not verify fault-tracing if the fault does not recur.

It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

Signal missing

See Signal missing

Faulty communication

See Faulty communication

See Signal missing

Faulty configuration

See Faulty configuration

See Faulty configuration