Checking wiring and sensors
Check the wiring between the pedal position sensor
- terminal #1 and control module terminal #7 (#A7)
- terminal #2 and control module terminal #5 (#A5)
- terminal #3 and control module terminal #3 (#A3).
check for an open-circuit, a short-circuit to ground and a short-circuit to supply voltage.
HINT: Connect an ohmmeter between terminals #2 and #3 on the pedal position sensor connector.
HINT: The resistance must be approximately 0.5 kohms with the brake pedal unaffected and approximately 2.5-3 kohms when the brake pedal is depressed.
HINT
HINT: Connect an ohmmeter between terminals #1 and #3 on the pedal position sensor connector.
HINT: The resistance must be approximately 2.5-3 kohms with the brake pedal unaffected and approximately 0.5 kohms with depressed brake pedal.
HINT
HINT: Replace the pedal position sensor if the resistance is incorrect.
Replace the pedal position sensor if no fault is found.
Other information
- Connect the breakout box.
- To replace the pedal position sensor, see «PEDAL SENSOR POWER BRAKE BOOSTER, REPLACING»(ref-406847-S25221448392011070100000)
- 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)
Scheme 124
Scheme 125
- Continue Refer to «Verification»(ref-406990-S32804177252011070100000)
Checking the fuse, wiring and sensors
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
- Connect the breakout box to the brake control module (BCM).
- To connect the breakout box to the Engine control module (ECM), see: «Connecting the breakout box»(ref-406813-S31532077542011070100000)
- See Connecting breakout box for Central Electronic Module (CEM). «Connecting the breakout box»(ref-406825-S11308929022011070100000)
- To replace the stop lamp switch, see «Stop lamp switch, replacing»(ref-406847-S16527767622011070100000)
- See «Checking wiring and terminals»(ref-406811-S00386154732011070100000)
Was a fault detected?
- YES Refer to «Verification»(ref-406990-S27613018692011070100000)
- NO FAULT NOT FOUND: Troubleshooting has been completed.
Check the wiring between the pedal position sensor
- terminal #1 and control module terminal #7 (#A7)
- terminal #2 and control module terminal #5 (#A5)
- terminal #3 and control module terminal #3 (#A3).
check for an open-circuit, a short-circuit to ground and a short-circuit to supply voltage.
HINT: Connect an ohmmeter between terminals #2 and #3 on the pedal position sensor connector.
HINT: The resistance must be approximately 0.5 kohms with the brake pedal unaffected and approximately 2.5-3 kohms when the brake pedal is depressed.
HINT: Connect an ohmmeter between terminals #1 and #3 on the pedal position sensor connector.
HINT: The resistance must be approximately 2.5-3 kohms with the brake pedal unaffected and approximately 0.5 kohms with depressed brake pedal.
HINT: Replace the pedal position sensor if the resistance is incorrect.
Replace the pedal position sensor if no fault is found.
Other information
- Connect the breakout box.
- To replace the pedal position sensor, see «PEDAL SENSOR POWER BRAKE BOOSTER, REPLACING»(ref-406847-S25221448392011070100000)
- 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)
- Continue Refer to «Verification»(ref-406990-S32695815762011070100000)
Checking the wiring and component
Check the wiring between pedal position sensor
- terminal #1 and brake control module (BCM) terminal #7 (#A7)
- terminal #2 and brake control module (BCM) terminal #5 (#A5)
- terminal #3 and brake control module (BCM) terminal #3 (#A3).
check for an open-circuit, a short-circuit to ground and a short-circuit to supply voltage.
Check the pedal position sensor as follows
- ignition off
- connect the breakout box to the wiring
- the control module disconnected.
measure the resistance at the pedal position sensor.
The resistance between terminals #3 (#A3) and #5 (#A5) must be approximately 0.5 kohms when the brake pedal is unaffected. The resistance must increase when the brake pedal is pressed.
The resistance between terminals #3 (#A3) and #7 (#A7) must be approximately 2.5 kohms when the brake pedal is unaffected. The resistance must decrease when the brake pedal is pressed.
Replace the pedal position sensor if the resistance is incorrect.
Remedy as necessary.
Other information
- Connect the breakout box.
- To replace the pedal position sensor, see «PEDAL SENSOR POWER BRAKE BOOSTER, REPLACING»(ref-406847-S25221448392011070100000)
- For information about signals, see «Signal specification, brake control module (BCM) with DSTC (dynamic stability and traction control)»(ref-406848-S12183644562011070100000) .
Was a fault detected?
- YES Refer to «Verification»(ref-406990-S40433132292011070100000)
- NO Refer to «Checking wiring and sensors»(ref-406990-S20729944822011070100000)
Check the wiring between the control module and the connectors for the brake pressure sensors.
For brake pressure sensor 1
- terminal #1 and control module terminal #19 (terminal #A19)
- terminal #2 and control module terminal #20 (#A20)
- terminal #3 and control module terminal #18 (#A18).
For brake pressure sensor 2
- terminal #1 and control module terminal #21 (#A21)
- terminal #2 and control module terminal #23 (terminal #A23)
- terminal #3 and control module terminal #22 (terminal #A22).
check for an open-circuit, a short-circuit to ground and a short-circuit to supply voltage.
HINT: Check the brake pressure sensors. First connect the breakout box and the connectors for the sensors. Switch on the ignition. Measure the signal from the sensor
Brake pressure sensor 1
- terminal #A19 and terminal #A20 on the breakout box. The voltage must be between approximately 0.25- 4.75 V, depending on the brake pressure
- terminal #A18 and terminal #A19 on the breakout box. The voltage must be approximately 5 V.
Brake pressure sensor 2
- terminal #A21 and terminal #A23 on the breakout box. The voltage must be between approximately 0.25- 4.75 V, depending on the brake pressure
- terminal #A21 and terminal #A22 on the breakout box. The voltage must be approximately 5 V.
Remedy as necessary.
Other information
- Connect the breakout box.
- To replace brake pressure sensors 1 and 2, see «Pressure sensor, master cylinder, replacing»(ref-406847-S11350847702011070100000)
- 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)
Was a fault detected?
- YES Refer to «Verification»(ref-406990-S40433132292011070100000)
- NO Refer to «Information»(ref-406990-S33090479352011070100000)
- Ignition off. Check the circuit for the pump motor between brake control module (BCM) terminal #1 (#A1) and the battery. Check for an open-circuit. Check for a short-circuit to ground. Check if the fuse for the brake system is defective. If the fuse has blown, check the cable between the fuse and control module terminal #1 (#A1). Check for a short-circuit to ground. Then replace the fuse. Check the pump motor circuit by connecting an ohmmeter between pump motor connector terminal #2 and ground. The ohmmeter should read infinite resistance. Remedy as necessary. Other information Connect the breakout box. See «Checking wiring and terminals»(ref-406811-S00386154732011070100000) For further information about the fuses and relays, see the relevant Wiring Diagram.
Was a fault detected?
- YES Refer to «Verification»(ref-406990-S09748076682011070100000)
- NO Refer to «Checking the pump motor circuit»(ref-406990-S26301558112011070100000)
- Ignition off. Check the wiring between brake control module (BCM) terminal #1 (#A1) and the battery. Check for an open-circuit. Check for a short-circuit to ground. Check if the fuse for the brake system in the integrated relay / fusebox in the engine compartment has blown. If the fuse is blown, check the cable between the fuse and control module terminal #1 (#A1). Check for a short-circuit to ground. Then replace the fuse. Check the pump motor circuit by connecting an ohmmeter between pump motor connector terminal #2 and ground. The ohmmeter should read infinite resistance. Remedy as necessary. Other information Connect the breakout box. See «Checking wiring and terminals»(ref-406811-S00386154732011070100000) For further information about the fuses and relays, see the relevant Wiring Diagram.
Was a fault detected?
- YES Refer to «Verification»(ref-406990-S34050213382011070100000)
- NO Refer to «Checking the pump motor circuit»(ref-406990-S17755180562011070100000)
Checking wiring and terminals
- Ignition off. Check the connector to the brake control module (BCM). Check for damaged or bent pins as well as contact resistance and oxidation. Check the cable between Brake control module (BCM) terminal #11 (#A11) and Differential electronic module (DEM) terminal #7. Check for an open-circuit and short-circuit to ground or voltage. Check the cable between Brake control module (BCM) terminal #15 (#A15) and Differential electronic module (DEM) terminal #8. Check for an open-circuit and short-circuit to ground or voltage. Check that the wiring is not too close to a source of interference such as a carphone etc. Remedy as necessary. Other information Connect the breakout box. See «Contents»(ref-406811-S37635188302011070100000) .
- Continue Refer to «Verification»(ref-406990-S12422685672011070100000)
- Ignition off. Check the brake control module connector. Check for damaged or bent terminal pins. Check for contact resistance and oxidation. Check the wiring for CAN communication between brake control module terminal #11 (#A11) and central electronic module terminal #17B and between brake control module terminal #15 (#A15) and central electronic module (CEM) terminal #18B. Check for an open-circuit. Check for a short-circuit to ground. Check for a short-circuit to supply voltage. Check that the wiring is not too close to a source of interference such as a carphone etc. Remedy as necessary. Other information To check the wiring and connections, see «Contents»(ref-406811-S37635188302011070100000) .
- Continue Refer to «Verification»(ref-406990-S41913776702011070100000)
- Ignition off. Check the brake control module connector. Check for damaged or bent terminal pins. Check for contact resistance and oxidation. Check the wiring for CAN communication between terminals #A11 (#A11) and #B13 (#B13) and between terminal #15 (#A15) and #B1 (#B11). Check for an open-circuit. Check for a short-circuit to ground. Check for a short-circuit to supply voltage. Check that the wiring is not too close to a source of interference such as a carphone etc. Remedy as necessary. Other information To check the wiring and connections, see «Contents»(ref-406811-S37635188302011070100000) .
- Continue Refer to «Verification»(ref-406990-S30884817452011070100000)
- Ignition off. Check the wiring between pedal position sensor terminal #1 and control module terminal #7 (#A7) terminal #2 and control module terminal #5 (#A5) terminal #3 and control module terminal #3 (#A3). Check for an open-circuit. Check for a short-circuit to ground. Check for a short-circuit to supply voltage. HINT: Check the pedal position sensor as follows HINT: - ignition off HINT: - connect the breakout box to the wiring HINT: - control module disconnected HINT: measure the resistance at the pedal position sensor. HINT: The resistance between breakout box terminals #3 (#A3) and #5 (#A5) must be approximately 0.5 kohms when the brake pedal is unaffected. The resistance must increase when the brake pedal is pressed. HINT: The resistance between breakout box terminals #3 (#A3) and #7 (#A7) must be approximately 2.5 kohms when the brake pedal is unaffected. The resistance must decrease when the brake pedal is pressed. Remedy as necessary. Other information Connect the breakout box. To replace the pedal position sensor, see «PEDAL SENSOR POWER BRAKE BOOSTER, REPLACING»(ref-406847-S25221448392011070100000) For information about signals, see «Signal specification, brake control module (BCM) with STC/ TRACS»(ref-406848-S21011960382011070100000) and «Signal specification, brake control module (BCM) with DSTC (dynamic stability and traction control)»(ref-406848-S12183644562011070100000) See «Contents»(ref-406811-S37635188302011070100000)
Was a fault detected?
- YES Refer to «Verification»(ref-406990-S20612698512011070100000)
- NO Refer to «Information»(ref-406990-S23064816732011070100000)
Checking wiring and terminals (automatic transmissions)
- Ignition off. Check the brake control module and transmission control module (TCM) connectors. Check for damaged or bent terminal pins. Check for contact resistance and oxidation. Check the wiring for CAN communication between brake control module terminal #11 (#A11) and terminal #2 (#B12) on the transmission control module (TCM) and between brake control module terminal #15 (#A15) and terminal #14 (#B24) on the transmission control module (TCM). Check for an open-circuit. Check for a short-circuit to ground. Check for a short-circuit to supply voltage. Remedy as necessary. Other information To connect the breakout box to the brake control module, see To fault-trace the wiring and connections, see «Contents»(ref-406811-S37635188302011070100000) .
- Continue Refer to «Verification»(ref-406990-S18686585812011070100000)
Scheme 126
- Ignition off. HINT: Check the back-up (reversing) light switch resistance between connector 54/1 terminal #24 and ground with gears 1 to 5 engaged. Resistance should be high. The back-up gear switch should be open in all gear positions except back-up gear. Remedy as necessary. Other information: To access the back-up (reversing) lamp switch, see «Back-up lamp switch, replacing»(ref-441132-S06777791742011121500000) .
Was a fault detected?
- YES Refer to «Verification»(ref-406990-S08792857122011070100000)
- NO Refer to «Checking the cable»(ref-406990-S26881551442011070100000)
Checking the wiring
- Ignition off. Check the wiring between the active yaw control sensor: terminal #1 and control module terminal #25 (terminal #A25) terminal #2 and control module terminal #29 (terminal #A29) terminal #3 and control module terminal #6 (#A6) terminal #5 and control module terminal #39 (terminal #A39). check for an open-circuit. Also check that the active yaw control sensor is correctly installed and that the bracket is secured. Replace the active yaw control sensor if the wiring is OK and the sensor is correctly installed. Other information Connect the breakout box. 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) .
- Continue Refer to «Verification»(ref-406990-S21542720932011070100000)
- Ignition off. Check the brake control module connector. Check for damaged or bent terminal pins. Check for contact resistance and oxidation. Check the wiring for CAN communication between brake control module terminal #11 (#A11) and terminal #6 (#A36) on the control module for the steering angle sensor and between brake control module terminal #15 (#A15) and terminal #15 (#A45) on the control module for the steering angle sensor. Check for an open-circuit. Check for a short-circuit to ground. Check for a short-circuit to supply voltage. Check that the wiring is not too close to a source of interference such as a carphone etc. Remedy as necessary. Other information To connect the breakout box to the brake control module, see See «Connecting the breakout box»(ref-406847-S35065259072011070100000) See «Contents»(ref-406811-S37635188302011070100000)
- Ignition off. Check the brake control module connector. Check for damaged or bent terminal pins. Check for contact resistance and oxidation. Check the wiring for CAN communication between brake control module terminal #11 (#A11) and terminal #6 (#A36) on the control module for the steering angle sensor and between brake control module terminal #15 (#A15) and terminal #15 (#A45) on the control module for the steering angle sensor. Check for an open-circuit. Check for a short-circuit to ground. Check for a short-circuit to supply voltage. Check that the wiring is not too close to a source of interference such as a carphone etc. Remedy as necessary. Other information To connect the breakout box to the brake control module, see See «Connecting the breakout box»(ref-406850-S31663458662011070100000) See «Contents»(ref-406811-S37635188302011070100000)
- Ignition off
- Connect the breakout box. Check the wiring between the connector for the active yaw control sensor terminal #1 and control module terminal #25 (terminal #A25) terminal #2 and control module terminal #29 (terminal #A29) terminal #3 and control module terminal #6 (#A6) terminal #5 and control module terminal #39 (terminal #A39). check for an open-circuit or short-circuit to ground and for a short-circuit to each other. Also check that the active yaw control sensor is correctly installed and that the bracket is secured. If the cables are OK, try a new active yaw control sensor. Other information Connect the breakout box. 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) .
Were there any faults in the wiring or in the installation of the active yaw control sensor?
- YES Refer to «Verification»(ref-406990-S24196786662011070100000) Refer to «Checking diagnostic trouble codes (DTCs)»(ref-406990-S30742452812011070100000)
- Ignition off
- Connect the breakout box. Check the wiring between the connector for the active yaw control sensor terminal #3 and control module terminal #6 (#A6) terminal #5 and control module terminal #39 (terminal #A39). check for a short-circuit to supply voltage. Other information Connect the breakout box. 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)
Was a fault detected?
- YES Refer to «Verification»(ref-406990-S08454384682011070100000)
- NO Refer to «Checking the control module»(ref-406990-S27177650842011070100000)
Scheme 127
Scheme 128
- Ignition off
- Breakout box connected to the brake control module (BCM)
- The active yaw control sensor disconnected
- Start the engine
- 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 brake control module (BCM) terminals #6 (#A6) and #39 (#A39). Check that the voltage is approximately the same as the value read from the brake control module (BCM). Replace the active yaw control sensor if the power supply to the sensor is OK. Check the charging system if the voltage to the brake control module (BCM) is too high. Remedy as necessary. Other information Connect the breakout box. 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) .
- Continue Refer to «Verification»(ref-406990-S08454384682011070100000)
- Ignition off
- Connect the breakout box. Check the wiring between the connector for 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 or short-circuit to ground. Other information Connect the breakout box. 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) .
Was a fault detected?
- YES Refer to «Verification»(ref-406990-S01642858682011070100000)
- NO Refer to «Checking the power supply»(ref-406990-S06561093452011070100000)
Scheme 129
- Ignition off
- The breakout box connected
- Disconnect the connector for the active yaw control sensor
- Ignition on. Connect a voltmeter to terminals #6 (#A6) and #39 (#A39) on the breakout box. The voltage must be normal system voltage. Replace the active yaw control sensor if the voltage is OK. Replace the control module if the voltage is incorrect. Other information To access and replace the active yaw control sensor, see «ACTIVE YAW CONTROL SENSOR, REPLACING»(ref-406847-S36312531992011070100000) To access or replace the brake control module (BCM), 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) .
- Continue Refer to «Verification»(ref-406990-S01642858682011070100000)
- Ignition off. Check the brake control module (BCM) and the active yaw control sensor connectors. Check for contact resistance and oxidation. Check the wiring between the connector for the active yaw control sensor: terminal #1 and control module terminal #A25 (#A25) terminal #2 and control module terminal #A29 (#A29) terminal #3 and control module terminal #A6 (#A6) terminal #5 and control module terminal #A39 (#A39). Check for an open-circuit. Check the wheel alignment. Remedy as necessary. Other information Connect the breakout box. For information about signals, see «Signal specification, brake control module (BCM) with DSTC (dynamic stability and traction control)»(ref-406848-S12183644562011070100000) To check the wheel alignment, see «Wheel alignment, checking / adjusting»(ref-406988-S29371039442011070100000) To replace the active yaw control sensor, see «ACTIVE YAW CONTROL SENSOR, REPLACING»(ref-406847-S36312531992011070100000) See «Contents»(ref-406811-S37635188302011070100000)
- Continue Refer to «Verification»(ref-406990-S24322056872011070100000)
- Ignition off
- Connect the breakout box. Check the wiring between the pressure sensor and the control module. Check for an open-circuit. Check for a short-circuit to ground. For pressure sensor 1, check the wiring between pressure sensor terminal #1 and control module terminal #21 (#A21) between pressure sensor terminal #2 and control module terminal #23 (#A23) between pressure sensor terminal #3 and control module terminal #22 (#A22). For pressure sensor 2, check the wiring between pressure sensor terminal #1 and control module terminal #19 (#A19) between pressure sensor terminal #2 and control module terminal #20 (#A20) between pressure sensor terminal #3 and control module terminal #18 (#A18). HINT: Check the relevant brake pressure sensor by measuring the signal from the sensor, with the ignition switched on and the breakout box connected: Pressure sensor 1 between terminal #A21 and terminal #A22 on the breakout box. The voltage must be approximately 5 V between terminal #A21 and terminal #A23 on the breakout box. Voltage must be between 0.25- 4.75 V, depending on brake pressure. Pressure sensor 2 between terminal #A18 and terminal #A19 on the breakout box. The voltage must be approximately 5 V between terminal #A19 and terminal #A20 on the breakout box. Voltage must be between 0.25- 4.75 V, depending on brake pressure. Replace the pressure sensor if the voltage does not change when the brake pedal is depressed. Other information Connect the breakout box. To replace the pressure sensor, see «Pressure sensor, master cylinder, replacing»(ref-406847-S11350847702011070100000) For information about signals, see «Signal specification, brake control module (BCM) with DSTC (dynamic stability and traction control)»(ref-406848-S12183644562011070100000) .
Was a fault detected?
- YES Refer to «Verification»(ref-406990-S09189565922011070100000)
- NO FAULT NOT FOUND: Troubleshooting has been completed.
- Ignition off
- Connect the breakout box. Check the ground lead between the relevant brake pressure sensor and the brake control module (BCM). Check for an open-circuit. For pressure sensor 1, check the cable between pressure sensor terminal #1 and brake control module (BCM) terminal #19 (#A19). For pressure sensor 2, check the cable between pressure sensor terminal #1 and control module terminal #21 (#A21). Try another pressure sensor if the cable is OK. Other information Connect the breakout box. To replace the pressure sensor, see «Pressure sensor, master cylinder, replacing»(ref-406847-S11350847702011070100000) For information about signals, see «Signal specification, brake control module (BCM) with DSTC (dynamic stability and traction control)»(ref-406848-S12183644562011070100000) .
Were any faults found in the cable?
- YES Refer to «Verification»(ref-406990-S16617142822011070100000)
- NO Refer to «Checking the control module»(ref-406990-S41556709452011070100000)
- Ignition off. Check the power supply wiring between the active yaw control sensor: terminal #3 and brake control module (BCM) terminal #6 (#A6) terminal #5 and brake control module (BCM) terminal #39 (#A39). check for a short-circuit to ground. Check for a short-circuit to supply voltage. Replace the control module 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) 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) .
- Continue Refer to «Verification»(ref-406990-S30945030592011070100000)
Check the cables between the pressure build-up valve
- #3 and brake control module (BCM) #31 (#A31)
- #4 and brake control module (BCM) #17 (#A17)
check for an open-circuit, a short-circuit to ground and a short-circuit to supply voltage.
HINT: Check the pressure build-up valve by, with the ignition off and the breakout box connected, reading the resistance between terminals #17 and #31 on the breakout box. Resistance must be approximately 3ohms.
Remedy as necessary.
Other information
- See «Signal specification, brake control module (BCM) with DSTC (dynamic stability and traction control)»(ref-406848-S12183644562011070100000)
- For replacing the pressure build-up valve (brake booster): «POWER BRAKE BOOSTER, REPLACING»(ref-407019-S02557615762011070100000)
Was a fault detected?
- YES Refer to «Verification»(ref-406990-S03440649422011070100000)
- NO FAULT NOT FOUND: Troubleshooting has been completed.
Check the wiring between the pedal pressure sensor
- terminal #1 and control module terminal #27 (#A27)
- terminal #2 and control module terminal #30 (#A30)
- terminal #5 and control module terminal #28 (#A28).
check for an open-circuit, a short-circuit to ground and a short-circuit to supply voltage.
Remedy as necessary.
Other information
- Connect the breakout box.
- To fault-trace the wiring and connections, see «Contents»(ref-406811-S37635188302011070100000)
- To replace the pedal pressure sensor (power brake booster), see «POWER BRAKE BOOSTER, REPLACING»(ref-407019-S02557615762011070100000)
- For information about signals, see «Signal specification, brake control module (BCM) with DSTC (dynamic stability and traction control)»(ref-406848-S12183644562011070100000) .
Was a fault detected?
- YES Refer to «Verification»(ref-406990-S42174203262011070100000)
- NO Refer to «Checking the connectors»(ref-406990-S34596732262011070100000)
Check that the fuse for the stop (brake) lamp switch in the integrated relay / fusebox in the engine compartment is intact.
Check the cable between stop lamp switch terminal #1 and the fuse in the integrated relay / fusebox in the engine compartment and between stop lamp switch terminal #5 and the splice. Check for an open-circuit. Check for a short-circuit to ground. Check for a short-circuit to supply voltage.
Check the cable between the splice and central electronic module (CEM) terminal #B4 and between the splice and engine control module (ECM) terminal #B26. Check for an open-circuit. Check for a short-circuit to ground. Check for a short-circuit to supply voltage.
HINT: Check the stop lamp switch by measuring the resistance between terminals #1 and #5 on the stop lamp switch. When the brake pedal is depressed the resistance should be infinite. When the brake pedal is not depressed the resistance should be 0 ohms.
Remedy as necessary.
Other information
- Connect the breakout box to the brake control module (BCM).
- To connect the breakout box to the Engine control module (ECM), see: «Connecting the breakout box»(ref-406813-S31532077542011070100000)
- For connection of breakout box to central electronic module (CEM), see: «Connecting the breakout box»(ref-406825-S28150951272011070100000)
- To replace the stop lamp switch, see «Stop lamp switch, replacing»(ref-406847-S16527767622011070100000)
- See «Contents»(ref-406811-S37635188302011070100000)
- For further information about the locations of fuses and relays, see the relevant Wiring Diagram.
Was a fault detected?
- YES Refer to «Verification»(ref-406990-S39124039002011070100000)
- NO FAULT NOT FOUND: Troubleshooting has been completed.
Check that the fuse for the stop (brake) lamp switch in the integrated relay / fusebox in the engine compartment is intact.
Check the cable between stop lamp switch terminal #1 and the fuse in the integrated relay / fusebox in the engine compartment and between stop lamp switch terminal #5 and the splice. Check for an open-circuit. Check for a short-circuit to ground. Check for a short-circuit to supply voltage.
Check the cable between the splice and central electronic module (CEM) terminal #B4 and between the splice and engine control module (ECM) terminal #B26. Check for an open-circuit. Check for a short-circuit to ground. Check for a short-circuit to supply voltage.
HINT: Check the stop lamp switch by measuring the resistance between terminals #1 and #5 on the stop lamp switch. When the brake pedal is depressed the resistance should be infinite. When the brake pedal is not depressed the resistance should be 0 ohms.
Remedy as necessary.
Other information
- Connect the breakout box to the brake control module (BCM).
- To connect the breakout box to the Engine control module (ECM), see: «Connecting the breakout box»(ref-406813-S31532077542011070100000)
- For connection of breakout box to central electronic module (CEM), see: «Connecting the breakout box»(ref-406825-S11308929022011070100000)
- To replace the stop lamp switch, see «Stop lamp switch, replacing»(ref-406847-S16527767622011070100000)
- See «Contents»(ref-406811-S37635188302011070100000)
- For further information about the locations of fuses and relays, see the relevant Wiring Diagram.
Was a fault detected?
- YES Refer to «Verification»(ref-406990-S40573016592011070100000)
- NO FAULT NOT FOUND: Troubleshooting has been completed.