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Home/Lexus/GS/Lexus GS III facelift (2007-2011)/Repair manual/Anti-Lock/traction Control/Electronically Controlled Brake System (Ebs) (Diagnostic Co…
Contents Wiring diagrams Section: Anti-Lock/traction Control All sections

Electronically Controlled Brake System (Ebs) (Diagnostic Codes & Symptom Tests): Other Lexus GS III facelift

Anti-Lock/traction Control ~5686 words

PROCEDURE

  1. CHECK HARNESS AND CONNECTOR (MOMENTARY INTERRUPTION) Using the Techstream, check for any momentary interruption in the wire harness and connector corresponding to a DTC. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-382793-S02622559332011012800000) . CHECKING FOR MOMENTARY INTERRUPTION Tester Display Measurement Item/Range Normal Condition EFI Communication Open EFI communication open detection / ERROR or NORMAL ERROR: Momentary interruption NORMAL: Normal OK There are no momentary interruptions. HINT: Perform the above inspection before removing the sensor and connector. NG --> See step 3 OK: Go to next step
  2. CHECK DTC FOR ENGINE CONTROL SYSTEM Clear the DTC. Refer to «DTC CHECK / CLEAR»(ref-382736-S05502628862011012800000) . Check for the DTC. Refer to «DTC CHECK / CLEAR»(ref-382736-S05502628862011012800000) . Result Display (DTC Output) Proceed To DTC (engine control system) is not output A DTC (engine control system) is output B Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-382736-S31901217882011012800000) B --> REPAIR ENGINE CONTROL SYSTEM ACCORDING TO DTC OUTPUT A --> REPLACE ECM
  3. REPAIR OR REPLACE HARNESS OR CONNECTOR (ECM TO SKID CONTROL ECU) NEXT: Go to next step
  4. RECONFIRM DTC Clear the DTC. Refer to «DTC CHECK / CLEAR»(ref-382793-S21584973372011012800000) . Perform a road test. Check if the same DTC is recorded. Refer to «DTC CHECK / CLEAR»(ref-382793-S21584973372011012800000) . Result Display (DTC Output) Proceed To DTC (C1201/51) is not output A DTC (C1201/51) is output B B --> See step 2 A --> END
  1. PERFORM INITIALIZATION OF LINEAR SOLENOID VALVE AND CALIBRATION Clear the DTC. Refer to «DTC CHECK / CLEAR»(ref-382793-S21584973372011012800000) . Perform the initialization of linear solenoid valve and calibration. Refer to «INITIALIZATION»(ref-382793-S39544306852011012800000) . NEXT: Go to next step
  2. CHECK DTC Clear the DTC. Refer to «DTC CHECK / CLEAR»(ref-382793-S21584973372011012800000) . Turn the engine switch off. Turn the engine switch on (IG). Check that the DTC (C1345/66) is recorded. Refer to «DTC CHECK / CLEAR»(ref-382793-S21584973372011012800000) . Result Display (DTC Output) Proceed To DTC (C1345/66) is not output A DTC (C1345/66) is output B Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-382793-S06502580872011012800000) B --> REPAIR CIRCUIT INDICATED BY OUTPUT CODE A: Go to next step
  3. RECONFIRM DTC Clear the DTC. Refer to «DTC CHECK / CLEAR»(ref-382793-S21584973372011012800000) . Turn the engine switch off. Turn the engine switch on (IG). Check if the same DTC is recorded. Refer to «DTC CHECK / CLEAR»(ref-382793-S21584973372011012800000) . Result Display (DTC Output) Proceed To DTC (C1203/95) is not output A DTC (C1203/95) is output B B --> REPLACE ECM A --> END
  1. CHECK YAW RATE AND ACCELERATION SENSOR INSTALLATION Check that the yaw rate and acceleration sensor has been installed properly. OK The sensor is tightened to the specified torque. The sensor is not be tilted. NG --> INSTALL YAW RATE AND ACCELERATION SENSOR CORRECTLY OK: Go to next step
  2. PERFORM ZERO POINT CALIBRATION OF YAW RATE AND ACCELERATION SENSOR Perform the zero point calibration of the yaw rate and acceleration sensor. Refer to «CALIBRATION»(ref-382793-S40522261552011012800000) . NEXT: Go to next step
  3. RECONFIRM DTC Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-382793-S21584973372011012800000) . Start the engine. Drive the vehicle and turn the steering wheel to the right and left at a speed of 35 km/h (24 mph) or more. Check if the same DTCs are recorded. Refer to «DTC CHECK / CLEAR»(ref-382793-S21584973372011012800000) . Result Display (DTC Output) Proceed To DTCs (C1210/36 and C1336/98) are output A DTCs (C1210/36 and C1336/98) are not output B HINT: The DTCs are recorded because zero point calibration has not been completed. End the procedure since the same DTCs are not recorded after completion of zero point calibration. B --> END A: Go to next step
  4. REPLACE YAW RATE AND ACCELERATION SENSOR Replace the yaw rate and acceleration sensor. NEXT: Go to next step
  5. PERFORM ZERO POINT CALIBRATION OF YAW RATE AND ACCELERATION SENSOR Perform the zero point calibration of the yaw rate and acceleration sensor. Refer to «CALIBRATION»(ref-382793-S40522261552011012800000) . NEXT: Go to next step
  6. RECONFIRM DTC Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-382793-S21584973372011012800000) . Start the engine. Drive the vehicle and turn the steering wheel to the right and left at a speed of 35 km/h (24 mph) or more. Check if the same DTCs are recorded. Refer to «DTC CHECK / CLEAR»(ref-382793-S21584973372011012800000) . Result Display (DTC Output) Proceed To DTCs (C1210/36 and C1336/98) are output A DTCs (C1210/36 and C1336/98) are not output B HINT: The DTCs are recorded because zero point calibration has not been completed. End the procedure since the same DTCs are not recorded after completion of zero point calibration. B --> END A --> REPLACE SKID CONTROL ECU
  1. INSPECT BRAKE ACTUATOR ASSEMBLY Disconnect the brake actuator assembly connector. Measure the resistance according to the value(s) in the table below. Resistance Tester Connection Specified Condition 2 (BM1) - 31 (GND1) Below 10 ohms 1 (BM2) - 31 (GND1) Below 10 ohms 2 (BM1) - 1 (BM2) Below 1 ohms 31 (GND1) - 32 (GND2) Below 1 ohms 2 (BM1) - 33 (MTT) 450 to 550 ohms 1 (BM2) - 33 (MTT) 450 to 550 ohms NG --> REPLACE BRAKE ACTUATOR ASSEMBLY OK: Go to next step
  2. READ VALUE USING TECHSTREAM (ACCUMULATOR PRESSURE SENSOR) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Select the Data List mode on the Techstream. CHECKING OUTPUT VOLTAGE Tester Display Measurement Item/Range Normal Condition Accumulator Sensor Accumulator pressure sensor / min.: 0 V, max.: 5 V Specified value: 2.6 to 3.8 V Depress the brake pedal 4 or 5 times to operate the pump motor, and check the output value on the Techstream with the motor stopped (not braking). OK ACC pressure sensor's output voltage does not drop. NG --> REPLACE BRAKE ACTUATOR ASSEMBLY OK: Go to next step
  3. RECONFIRM DTC Clear the DTC. Refer to «DTC CHECK / CLEAR»(ref-382793-S21584973372011012800000) . Turn the engine switch on (IG). Check if the same DTC is recorded. Refer to «DTC CHECK / CLEAR»(ref-382793-S21584973372011012800000) . HINT: Reinstall the sensors, connectors, etc. and restore the vehicle to its prior condition before rechecking for DTCs. Result Display (DTC Output) Proceed To DTC (C1256/57) is not output A DTC (C1256/57) is output B B --> REPLACE SKID CONTROL ECU A --> END
  1. CHECK DTC FOR VGRS SYSTEM Clear the DTC. Refer to «DTC CHECK / CLEAR»(ref-382810-S16608627522011012800000) . Check for the DTC. Refer to «DTC CHECK / CLEAR»(ref-382810-S16608627522011012800000) . Result Display (DTC Output) Proceed To DTC (VGRS system) is not output A DTC (VGRS system) is output B Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-382810-S29110751752011012800000) B --> REPAIR VGRS SYSTEM ACCORDING TO DTC OUTPUT A: Go to next step
  2. RECONFIRM DTC Clear the DTC. Refer to «DTC CHECK / CLEAR»(ref-382793-S21584973372011012800000) . Turn the engine switch on (IG). Check if the same DTC is recorded. Refer to «DTC CHECK / CLEAR»(ref-382793-S21584973372011012800000) . Result Display (DTC Output) Proceed To DTC (C1289/41) is not output A DTC (C1289/41) is output B B --> See step 1 A --> END
  1. PERFORM ZERO POINT CALIBRATION OF YAW RATE AND ACCELERATION SENSOR Perform zero point calibration of the yaw rate and acceleration sensor. Refer to «CALIBRATION»(ref-382793-S40522261552011012800000) . HINT: When the stored zero point of the yaw rate and acceleration sensor is erased, steering angle sensor zero point will also be erased. If the zero point and output value of the yaw rate and acceleration sensor and the output value of the speed sensors are not normal, steering angle sensor zero point cannot be acquired normally even if the vehicle is driven straight ahead at 35 km/h (22 mph) or more. NEXT: Go to next step
  2. CHECK STEERING ANGLE SENSOR ZERO POINT CALIBRATION Drive the vehicle straight ahead at 35 km/h (22 mph) or more for at least 5 seconds. Check that the centered position of the steering wheel is correctly set while driving straight ahead. HINT: If front wheel alignment and steering position are adjusted as a result of an off-center steering wheel, acquire yaw rate and acceleration sensor zero point again after the adjustments are completed. OK The centered position of the steering wheel is correctly set. NG --> ADJUST FRONT WHEEL ALIGNMENT OR STEERING POSITION OK --> END
  1. REPLACE SKID CONTROL ECU Replace the skid control ECU. Refer to «REMOVAL»(ref-382718-S34842905462011012800000) . NEXT --> PERFORM TEST MODE (SIGNAL CHECK)
  1. CHECK DTC FOR EPS CONTROL SYSTEM Clear the DTC. Refer to «DTC CHECK / CLEAR»(ref-382573-S06970880742011012800000) . Check the DTC. Refer to «DTC CHECK / CLEAR»(ref-382573-S06970880742011012800000) . Result Display (DTC Output) Proceed To DTC (EPS control system) is not output A DTC (EPS control system) is output B Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-382573-S32122221872011012800000) B --> REPAIR EPS CONTROL SYSTEM ACCORDING TO DTC OUTPUT A: Go to next step
  2. RECONFIRM DTC Clear the DTC. Refer to «DTC CHECK / CLEAR»(ref-382793-S21584973372011012800000) . Turn the engine switch on (IG). Check if the same DTC is recorded. Refer to «DTC CHECK / CLEAR»(ref-382793-S21584973372011012800000) . Result Display (DTC Output) Proceed To DTC (C1304/27) is not output A DTC (C1304/27) is output B B --> See step 1 A --> END
  1. CHECK DTC Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-382793-S21584973372011012800000) . Turn the engine switch off. Turn the engine switch on (IG). Check that the DTCs (Electronically Controlled Brake System and SFI system) are recorded. Result Display (DTC Output) Proceed To DTCs (except C1203/95, C1345/66, C1368/67, C1392/48, and SFI system malfunction) are not output A SFI system DTC is output B Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-382736-S31901217882011012800000) DTCs (except C1345/66 and C1368/67) are output C Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-382793-S06502580872011012800000) C --> REPAIR CIRCUIT INDICATED BY OUTPUT CODE B --> REPAIR ENGINE CONTROL SYSTEM ACCORDING TO DTC OUTPUT A: Go to next step
  2. PERFORM INITIALIZATION OF LINEAR SOLENOID VALVE AND CALIBRATION Perform initialization of the linear solenoid valve and calibration. Refer to «INITIALIZATION»(ref-382793-S39544306852011012800000) . NEXT: Go to next step
  3. RECONFIRM DTC Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-382793-S21584973372011012800000) . Turn the engine switch on (IG). Check if the same DTCs are recorded. Refer to «DTC CHECK / CLEAR»(ref-382793-S21584973372011012800000) . Result Display (DTC Output) Proceed To DTCs (C1345/66 and C1368/67) are not output A DTCs (C1345/66 and C1368/67) are output B B --> REPLACE BRAKE ACTUATOR ASSEMBLY A --> END
  1. CHECK BRAKE FLUID LEAKAGE Check that there is no fluid leakage in the brake line between the brake actuator and the wheel cylinder which is the cause of DTCs. Check that the brake is not dragging. OK There is no fluid leakage or dragging. NG --> REPAIR OR REPLACE APPLICABLE PART OK: Go to next step
  2. READ VALUE USING TECHSTREAM (ACCUMULATOR PRESSURE SENSOR) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Select the Data List mode on the Techstream. CHECKING OUTPUT VOLTAGE Tester Display Measurement Item/Range Normal Condition Accumulator Sensor Accumulator pressure sensor 1 / min.: 0 V, max.: 5 V Specified value: 2.6 to 3.8 V Wait a few minutes without operating the brake pedal. Check that the output value of the accumulator pressure sensor does not decrease and that the pump motor is not activated due to a decrease in accumulator pressure. OK Accumulator pressure does not decrease and the pump motor is not activated due to a decrease in accumulator pressure. NG --> REPLACE BRAKE ACTUATOR ASSEMBLY OK: Go to next step
  3. RECONFIRM DTC Clear the DTC. Refer to «DTC CHECK / CLEAR»(ref-382793-S21584973372011012800000) . Turn the engine switch on (IG). Check if the same DTC is recorded. Refer to «DTC CHECK / CLEAR»(ref-382793-S21584973372011012800000) . Result Display (DTC Output) Proceed To DTC (C1391/69) is not output A DTC (C1391/69) is output B B --> REPLACE SKID CONTROL ECU A --> END
  1. CHECK DTC Clear the DTC. Refer to «DTC CHECK / CLEAR»(ref-382793-S21584973372011012800000) . Turn the engine switch off. Turn the engine switch on (IG) again and check that no CAN communication system DTCs are output. Refer to «DIAGNOSIS SYSTEM»(ref-382784-S35354466232011012800000) . Drive the vehicle and turn the steering wheel to the right and left at a speed of 35 km/h (22 mph) and check that no speed sensor and yaw rate and acceleration sensor DTCs are output. Refer to «DTC CHECK / CLEAR»(ref-382793-S21584973372011012800000) . Result Result Proceed to DTCs (C1439/66 and/or C1445/66) are output A CAN communication system DTC is output B Speed sensor and/or yaw rate and acceleration sensor DTC is output C DTCs (C1439/66 and C1445/66) are not output D HINT: If there is a malfunction in the speed sensor or the yaw rate and acceleration sensor, an abnormal value may be output although the steering angle sensor is normal. If the speed sensor and the yaw rate and acceleration sensor DTCs are output simultaneously, repair the sensors and inspect the steering angle sensor. If the same DTC C1439/66 and/or C1445/66 is not output again, the DTC may have been stored due to a temporary loss of the steering angle zero point calibration, such as when the power source voltage drops. D --> CHECK FOR INTERMITTENT PROBLEMS C --> See step 5 B --> See step 4 A: Go to next step
  2. CHECK STEERING ANGLE SENSOR ZERO POINT CALIBRATION Drive the vehicle straight ahead at 35 km/h (22 mph) or more for at least 5 seconds. Check that the centered position of the steering wheel is correctly set while driving straight ahead. HINT: If the front wheel alignment and steering position are adjusted as a result of an off-centered position of the steering wheel, acquire yaw rate and acceleration sensor zero point again after the adjustments are completed. OK The centered position of the steering wheel is correctly set. NG --> ADJUST FRONT WHEEL ALIGNMENT OR STEERING POSITION OK: Go to next step
  3. RECONFIRM DTC Turn the engine switch off. Clear the DTC. Refer to «DTC CHECK / CLEAR»(ref-382793-S21584973372011012800000) . Start the engine. Drive the vehicle and turn the steering wheel to the right and left at the speed of 35 km/h (22 mph) or more. Check if the same DTC is recorded. Refer to «DTC CHECK / CLEAR»(ref-382793-S21584973372011012800000) . Result Result Proceed to DTCs (C1439/66 and/or C1445/66) are output A DTCs (C1439/66 and C1445/66) are not output B HINT: If the same DTC C1439/66 and/or C1445/66 is not output again, the DTC may have been stored due to a temporary loss of the steering angle zero point calibration, such as when the power source voltage drops. B --> END A --> REPLACE SKID CONTROL ECU
  4. REPAIR CAN COMMUNICATION SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-382784-S23446382622011012800000)
  5. REPAIR CIRCUIT INDICATED BY OUTPUT DTC. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-382793-S06502580872011012800000)
  1. CHECK DTC Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-382793-S21584973372011012800000) . Drive the vehicle at a speed of 30 km/h (19 mph) or more, turn the steering wheel, and decelerate the vehicle (depress the brake pedal). Check if the same DTC is recorded. Refer to «DTC CHECK / CLEAR»(ref-382793-S21584973372011012800000) . HINT: Drive the vehicle straight on a level road during the road test, and check if DTC 1440/98 and the yaw rate and acceleration sensor DTC are output again. Result Result Proceed to DTCs (C1440/98 and yaw rate and acceleration sensor DTC) are not output A DTCs (C1440/98 and/or yaw rate and acceleration sensor DTC) are output B B --> See step 2 A --> END
  2. REPAIR CIRCUIT INDICATED BY OUTPUT DTC. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-382793-S06502580872011012800000)
  1. CHECK DTC Clear the DTC. Refer to «DTC CHECK / CLEAR»(ref-382793-S21584973372011012800000) . Start and idle the engine for 60 seconds, and then stop the engine. Check if the same DTC is recorded. Refer to «DTC CHECK / CLEAR»(ref-382793-S21584973372011012800000) . Result Result Proceed to DTCs (C1442/44 and/or C1443/34) are output A DTCs (C1442/44 and C1443/34) are not output B B --> CHECK FOR INTERMITTENT PROBLEMS A --> REPLACE YAW RATE AND ACCELERATION SENSOR
  1. CHECK HARNESS AND CONNECTOR (MOMENTARY INTERRUPTION) Using the Techstream, check for any momentary interruption in the wire harness and connector corresponding to a DTC. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-382793-S02622559332011012800000) . CHECKING FOR MOMENTARY INTERRUPTION Tester Display Measurement Item/Range Normal Condition EFI Communication Open EFI communication open detection / ERROR or NORMAL ERROR: Momentary interruption NORMAL: Normal Steering Open Steering angle sensor open detection / ERROR or NORMAL ERROR: Momentary interruption NORMAL: Normal Yaw Rate Open Yaw rate sensor open detection / ERROR or NORMAL ERROR: Momentary interruption NORMAL: Normal OK There are no momentary interruptions. HINT: Perform the above inspection before removing the sensor and connector. NG --> See step 3 OK: Go to next step
  2. RECONFIRM DTC Record the output DTCs (for ABS, VSC, Electronically Controlled Brake System and CAN communication). Refer to «DTC CHECK / CLEAR»(ref-382793-S21584973372011012800000) for ABS, VSC and Electronically Controlled Brake System, or. Refer to «DIAGNOSIS SYSTEM»(ref-382784-S35354466232011012800000) for CAN). HINT: If the CAN communication system DTC and the relevant sensor DTCs are output simultaneously, troubleshoot the relevant sensor DTCs (for ABS, VSC and Electronically Controlled Brake System) after the CAN communication system returns to normal. Result Display (DTC Output) Proceed To DTC is not output or cannot be read A DTC is output B Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-382793-S06502580872011012800000) for ABS, VSC and Electronically Controlled Brake System, or Refer to «DIAGNOSIS SYSTEM»(ref-382784-S35354466232011012800000) for CAN) B --> REPAIR CIRCUIT INDICATED BY OUTPUT CODE A --> REPAIR CAN COMMUNICATION SYSTEM
  3. REPAIR OR REPLACE HARNESS OR CONNECTOR Repair or replace the harness or connector. Check for any momentary interruption between the skid control ECU and each sensor or ECM. Check that there is no momentary interruption. NEXT: Go to next step
  4. RECONFIRM DTC Clear the DTC. Refer to «DTC CHECK / CLEAR»(ref-382793-S21584973372011012800000) . Start the engine. Drive the vehicle and turn the steering wheel to the right and left at a speed of 15 km/h (9 mph) or more. Check that no CAN communication system DTC is output. If ABS, VSC and Electronically Controlled Brake System DTCs are output, record them. Result Display (DTC Output) Proceed To DTC for the CAN communication system is output A Refer to «DIAGNOSIS SYSTEM»(ref-382784-S35354466232011012800000) No DTC is output (ABS, VSC and Electronically Controlled Brake System DTCs are output) B Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-382793-S06502580872011012800000) No DTC is output (No ABS, VSC and Electronically Controlled Brake System DTCs are output) C HINT: The CAN communication system must be normal when repairing the sensor DTCs (for ABS, VSC and Electronically Controlled Brake System). C --> END B --> REPAIR CIRCUIT INDICATED BY OUTPUT CODE A --> REPAIR CAN COMMUNICATION SYSTEM
  1. INSPECT CAN COMMUNICATION SYSTEM Check if the CAN communication system DTC is output. Refer to «DIAGNOSIS SYSTEM»(ref-382784-S35354466232011012800000) . Result Display (DTC Output) Proceed To DTC is not output A DTC is output B B --> REPAIR CAN COMMUNICATION SYSTEM A: Go to next step
  2. INSPECT MULTIPLEX COMMUNICATION SYSTEM Check if the multiplex communication system DTC is output. Refer to «DTC CHECK / CLEAR»(ref-382788-S39836073052011012800000) . Result Display (DTC Output) Proceed To DTC is not output A DTC is output B B --> REPAIR MULTIPLEX COMMUNICATION SYSTEM A: Go to next step
  3. INSPECT ABS WARNING LIGHT Disconnect the skid control ECU connector. Turn the engine switch on (IG). Check that the ABS warning light comes on. OK ABS warning light comes on. HINT: If troubleshooting has been carried out according to the PROBLEM SYMPTOMS TABLE, refer back to the table and proceed to the next step before replacing the part. Refer to «PROBLEM SYMPTOMS TABLE»(ref-382793-S35062504242011012800000) . NG --> See step 4 OK --> REPLACE SKID CONTROL ECU
  4. INSPECT COMBINATION METER ASSEMBLY Check the combination meter assembly. Refer to «PROBLEM SYMPTOMS TABLE»(ref-382731-S09984996202011012800000) . HINT: If troubleshooting has been carried out according to the PROBLEM SYMPTOMS TABLE, refer back to the table and proceed to the next step. Refer to «PROBLEM SYMPTOMS TABLE»(ref-382793-S35062504242011012800000) . NG --> REPLACE COMBINATION METER ASSEMBLY OK --> END
  1. INSPECT CAN COMMUNICATION SYSTEM Check if the CAN communication system DTC is output. Refer to «DIAGNOSIS SYSTEM»(ref-382784-S35354466232011012800000) . Result Display (DTC Output) Proceed To DTC is not output A DTC is output B B --> REPAIR CAN COMMUNICATION SYSTEM A: Go to next step
  2. INSPECT MULTIPLEX COMMUNICATION SYSTEM Check if the multiplex communication system DTC is output. Refer to «DTC CHECK / CLEAR»(ref-382788-S39836073052011012800000) . Result Display (DTC Output) Proceed To DTC is not output A DTC is output B B --> REPAIR MULTIPLEX COMMUNICATION SYSTEM A: Go to next step
  3. INSPECT BRAKE WARNING LIGHT Disconnect the skid control ECU connector. Turn the engine switch on (IG). Check if the BRAKE warning light comes on. OK Brake warning light comes on. HINT: If troubleshooting has been carried out according to the PROBLEM SYMPTOMS TABLE, refer back to the table and proceed to the next step before replacing the part. Refer to «PROBLEM SYMPTOMS TABLE»(ref-382793-S35062504242011012800000) . NG --> See step 4 OK --> REPLACE SKID CONTROL ECU
  4. INSPECT COMBINATION METER ASSEMBLY Check the combination meter assembly. Refer to «PROBLEM SYMPTOMS TABLE»(ref-382731-S09984996202011012800000) . HINT: If troubleshooting has been carried out according to the PROBLEM SYMPTOMS TABLE, refer back to the table and proceed to the next step. Refer to «PROBLEM SYMPTOMS TABLE»(ref-382793-S35062504242011012800000) . NG --> REPLACE COMBINATION METER ASSEMBLY OK --> END
  1. INSPECT CAN COMMUNICATION SYSTEM Check if a CAN communication system DTC is output. Refer to «DIAGNOSIS SYSTEM»(ref-382784-S35354466232011012800000) . Result Result Proceed to DTC is not output A DTC is output B B --> See step 5 A: Go to next step
  2. INSPECT MULTIPLEX COMMUNICATION SYSTEM Check if a multiplex communication system DTC is output. Refer to «DTC CHECK / CLEAR»(ref-382788-S39836073052011012800000) . Result Result Proceed to DTC is not output A DTC is output B B --> See step 6 A: Go to next step
  3. PERFORM ACTIVE TEST USING TECHSTREAM (TRAC OFF INDICATOR) Connect the Techstream to the DLC3. Start the engine. Select the Active Test mode on the Techstream. Refer to «DATA LIST / ACTIVE TEST»(ref-382793-S04281311202011012800000) . CHECKING TRAC OFF INDICATOR ON/OFF Tester Display Test Part Control Range Diagnostic Note TRAC OFF Indicator Light Multi-information display (TRAC OFF indicator) Display ON / OFF Observe combination meter Check that the multi-information display (TRAC OFF indicator) on the combination meter turns on or off in accordance with the Techstream operation. OK The multi-information display (TRAC OFF indicator) turns on or off in accordance with the Techstream operation. HINT: If troubleshooting has been carried out according to Problem Symptoms Table, refer back to the table and proceed to the next step before replacing the part. Refer to «PROBLEM SYMPTOMS TABLE»(ref-382793-S35062504242011012800000) . NG --> See step 4 OK --> REPLACE SKID CONTROL ECU
  4. INSPECT COMBINATION METER ASSEMBLY Turn the engine switch off. Perform the Active Test of the combination meter (meter CPU) using the Techstream. Refer to «DATA LIST / ACTIVE TEST»(ref-382731-S07006502722011012800000) . Check the combination meter. OK The multi-information display (TRAC OFF indicator) turns on or off in accordance with the Techstream operation. HINT: If troubleshooting has been carried out according to Problem Symptoms Table, refer back to the table and proceed to the next step. Refer to «PROBLEM SYMPTOMS TABLE»(ref-382793-S35062504242011012800000) . NG --> REPLACE COMBINATION METER ASSEMBLY OK --> REPLACE SKID CONTROL ECU
  5. REPAIR CAN COMMUNICATION SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-382784-S23446382622011012800000)
  6. REPAIR MULTIPLEX COMMUNICATION SYSTEM. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-382788-S34364788102011012800000)
  1. INSPECT CAN COMMUNICATION SYSTEM Check if the CAN communication system DTC is output. Refer to «DIAGNOSIS SYSTEM»(ref-382784-S35354466232011012800000) . Result Display (DTC Output) Proceed To DTC is not output A DTC is output B B --> REPAIR CAN COMMUNICATION SYSTEM A: Go to next step
  2. INSPECT MULTIPLEX COMMUNICATION SYSTEM Check if the multiplex communication system DTC is output. Refer to «DTC CHECK / CLEAR»(ref-382788-S39836073052011012800000) . Result Display (DTC Output) Proceed To DTC is not output A DTC is output B B --> REPAIR MULTIPLEX COMMUNICATION SYSTEM A: Go to next step
  3. INSPECT IF SKID CONTROL ECU CONNECTOR IS SECURELY CONNECTED Check the skid control ECU connector's connection. OK The connector is securely connected. NG --> CONNECT CONNECTOR TO ECU CORRECTLY OK: Go to next step
  4. INSPECT BATTERY Check the battery voltage. Voltage 11 to 14 V NG --> INSPECT CHARGING SYSTEM OK: Go to next step
  5. INSPECT COMBINATION METER ASSEMBLY Check the combination meter assembly. Refer to «PROBLEM SYMPTOMS TABLE»(ref-382731-S09984996202011012800000) . HINT: If troubleshooting has been carried out according to the PROBLEM SYMPTOMS TABLE, refer back to the table and proceed to the next step before replacing the part. Refer to «PROBLEM SYMPTOMS TABLE»(ref-382793-S35062504242011012800000) . NG --> REPLACE COMBINATION METER ASSEMBLY OK --> REPLACE SKID CONTROL ECU
  1. INSPECT CAN COMMUNICATION SYSTEM Check if the CAN communication system DTC is output. Refer to «DIAGNOSIS SYSTEM»(ref-382784-S35354466232011012800000) . Result Display (DTC Output) Proceed To DTC is not output A DTC is output B B --> REPAIR CAN COMMUNICATION SYSTEM A: Go to next step
  2. INSPECT MULTIPLEX COMMUNICATION SYSTEM Check if the multiplex communication system DTC is output. Refer to «DTC CHECK / CLEAR»(ref-382788-S39836073052011012800000) . Result Display (DTC Output) Proceed To DTC is not output A DTC is output B B --> REPAIR MULTIPLEX COMMUNICATION SYSTEM A: Go to next step
  3. INSPECT BRAKE CONTROL WARNING LIGHT Connect the Techstream to the DLC3. Start the engine. Select the "ECB* Warning Light" in the Active Test and operate the brake control warning light by the Techstream. CHECKING BRAKE CONTROL WARNING LIGHT ON/OFF Tester Display Test Part Control Range Diagnostic Note ECB* Warning Light Brake control warning light Warning light ON / OFF Observe combination meter *: Electronically Controlled Brake Check that "ON" and "OFF" of the brake control warning light is indicated on the combination meter when using the Techstream. OK The brake control warning light turns on or off in accordance with the Techstream. HINT: If troubleshooting has been carried out according to the PROBLEM SYMPTOMS TABLE, refer back to the table and proceed to the next step before replacing the part. Refer to «PROBLEM SYMPTOMS TABLE»(ref-382793-S35062504242011012800000) . NG --> See step 4 OK --> REPLACE SKID CONTROL ECU
  4. INSPECT COMBINATION METER ASSEMBLY Check the combination meter assembly. Refer to «PROBLEM SYMPTOMS TABLE»(ref-382731-S09984996202011012800000) . HINT: If troubleshooting has been carried out according to the PROBLEM SYMPTOMS TABLE, refer back to the table and proceed to the next step before replacing the part. Refer to «PROBLEM SYMPTOMS TABLE»(ref-382793-S35062504242011012800000) . NG --> REPLACE COMBINATION METER ASSEMBLY OK --> END
  1. INSPECT CAN COMMUNICATION SYSTEM Check if a CAN communication system DTC is output. Refer to «DIAGNOSIS SYSTEM»(ref-382784-S35354466232011012800000) . Result Result Proceed to DTC is not output A DTC is output B B --> See step 9 A: Go to next step
  2. INSPECT MULTIPLEX COMMUNICATION SYSTEM Check if a multiplex communication system DTC is output. Refer to «DTC CHECK / CLEAR»(ref-382788-S39836073052011012800000) . Result Result Proceed to DTC is not output A DTC is output B B --> See step 10 A: Go to next step
  3. INSPECT IF SKID CONTROL ECU CONNECTOR IS SECURELY CONNECTED Check if the skid control ECU connector is securely connected. OK The connector is securely connected. NG --> CONNECT CONNECTOR TO ECU CORRECTLY OK: Go to next step
  4. INSPECT BATTERY Check the battery voltage. Standard voltage 11 to 14 V NG --> INSPECT CHARGING SYSTEM OK: Go to next step
  5. READ VALUE USING TECHSTREAM (VSC OFF SWITCH) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Select the Data List mode on the Techstream. Refer to «DATA LIST / ACTIVE TEST»(ref-382793-S04281311202011012800000) . CHECKING SWITCH CONDITION ON TECHSTREAM DISPLAY Tester Display Measurement Item/Range Normal Condition Diagnostic Note TRC / VSC Off Mode VSC OFF switch / NORMAL, TRC OFF or VSC OFF NORMAL: Normal mode TRC OFF: TRAC off mode VSC OFF: VSC off mode - Using the Techstream, check the switch condition on the Techstream changes according to VSC OFF switch operation. OK The Techstream display changes according to VSC OFF switch operation. NG --> See step 7 OK: Go to next step
  6. INSPECT COMBINATION METER ASSEMBLY Turn the engine switch off. Perform the Active Test of the combination meter (meter CPU) using the Techstream. Refer to «DATA LIST / ACTIVE TEST»(ref-382731-S07006502722011012800000) . Check the combination meter. OK The VSC OFF indicator light turns on or off in accordance with the Techstream operation. HINT: If troubleshooting has been carried out according to Problem Symptoms Table, refer back to the table and proceed to the next step before replacing the part. Refer to «PROBLEM SYMPTOMS TABLE»(ref-382793-S35062504242011012800000) . NG --> REPLACE COMBINATION METER ASSEMBLY OK --> REPLACE SKID CONTROL ECU
  7. INSPECT VSC OFF SWITCH Turn the engine switch off. Disconnect the VSC OFF switch connector. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Switch Condition Specified Condition 3 (+) - 4 (E) Switch is pushed in Below 1 ohms 3 (+) - 4 (E) Switch is not pushed in 10 kohms or higher NG --> REPLACE VSC OFF SWITCH OK: Go to next step
  8. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - VSC OFF SWITCH) Disconnect the skid control ECU connector. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Condition Specified Condition A15-41 (CSW) - K43-3 (+) Always Below 1 ohms A15-41 (CSW) - Body ground Always 10 kohms or higher K43-4 (E) - Body ground Always Below 1 ohms HINT: If troubleshooting has been carried out according to Problem Symptoms Table, refer back to the table and proceed to the next step. Refer to «PROBLEM SYMPTOMS TABLE»(ref-382793-S35062504242011012800000) . NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPLACE SKID CONTROL ECU
  9. REPAIR CAN COMMUNICATION SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-382784-S23446382622011012800000)
  10. REPAIR MULTIPLEX COMMUNICATION SYSTEM. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-382788-S34364788102011012800000)
  1. INSPECT CAN COMMUNICATION SYSTEM Check if a CAN communication system DTC is output. Refer to «DIAGNOSIS SYSTEM»(ref-382784-S35354466232011012800000) . Result Result Proceed to DTC is not output A DTC is output B B --> See step 5 A: Go to next step
  2. INSPECT MULTIPLEX COMMUNICATION SYSTEM Check if a multiplex communication system DTC is output. Refer to «DTC CHECK / CLEAR»(ref-382788-S39836073052011012800000) . Result Result Proceed to DTC is not output A DTC is output B B --> See step 6 A: Go to next step
  3. PERFORM ACTIVE TEST USING TECHSTREAM (VSC OFF INDICATOR LIGHT) Connect the Techstream to the DLC3. Start the engine. Select the Active Test mode on the Techstream. Refer to «DATA LIST / ACTIVE TEST»(ref-382793-S04281311202011012800000) . CHECKING VSC OFF INDICATOR LIGHT ON/OFF Tester Display Test Part Control Range Diagnostic Note VSC OFF Indicator Light VSC OFF indicator light Indicator light ON / OFF Observe combination meter Check that the VSC OFF indicator light on the combination meter turns on or off in accordance with the Techstream operation. OK The VSC OFF indicator light turns on or off in accordance with the Techstream operation. HINT: If troubleshooting has been carried out according to Problem Symptoms Table, refer back to the table and proceed to the next step before replacing the part. Refer to «PROBLEM SYMPTOMS TABLE»(ref-382793-S35062504242011012800000) . NG --> See step 4 OK --> REPLACE SKID CONTROL ECU
  4. INSPECT COMBINATION METER ASSEMBLY Turn the engine switch off. Perform the Active Test of the combination meter (meter CPU) using the Techstream. Refer to «DATA LIST / ACTIVE TEST»(ref-382731-S07006502722011012800000) . Check the combination meter. OK The VSC OFF indicator light turns on or off in accordance with the Techstream operation. HINT: If troubleshooting has been carried out according to Problem Symptoms Table, refer back to the table and proceed to the next step. Refer to «PROBLEM SYMPTOMS TABLE»(ref-382793-S35062504242011012800000) . NG --> REPLACE COMBINATION METER ASSEMBLY OK --> REPLACE SKID CONTROL ECU
  5. REPAIR CAN COMMUNICATION SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-382784-S23446382622011012800000)
  6. REPAIR MULTIPLEX COMMUNICATION SYSTEM. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-382788-S34364788102011012800000)
  1. INSPECT CAN COMMUNICATION SYSTEM Check if the CAN communication system DTC is output. Refer to «DIAGNOSIS SYSTEM»(ref-382784-S35354466232011012800000) . Result Display (DTC Output) Proceed To DTC is not output A DTC is output B B --> REPAIR CAN COMMUNICATION SYSTEM A: Go to next step
  2. INSPECT MULTIPLEX COMMUNICATION SYSTEM Check if the multiplex communication system DTC is output. Refer to «DTC CHECK / CLEAR»(ref-382788-S39836073052011012800000) . Result Display (DTC Output) Proceed To DTC is not output A DTC is output B B --> REPAIR MULTIPLEX COMMUNICATION SYSTEM A: Go to next step
  3. INSPECT IF SKID CONTROL ECU CONNECTOR IS SECURELY CONNECTED Check the skid control ECU connector's connection. OK The connector is securely connected. NG --> CONNECT CONNECTOR TO ECU CORRECTLY OK: Go to next step
  4. INSPECT BATTERY Check the battery voltage. Voltage 11 to 14 V NG --> INSPECT CHARGING SYSTEM OK: Go to next step
  5. INSPECT COMBINATION METER ASSEMBLY Check the combination meter assembly. Refer to «PROBLEM SYMPTOMS TABLE»(ref-382731-S09984996202011012800000) . HINT: If troubleshooting has been carried out according to Problem Symptoms Table, refer back to the table and proceed to the next step before replacing the part. Refer to «PROBLEM SYMPTOMS TABLE»(ref-382793-S35062504242011012800000) . NG --> REPLACE COMBINATION METER ASSEMBLY OK --> REPLACE SKID CONTROL ECU
  1. INSPECT CAN COMMUNICATION SYSTEM Check if the CAN communication system DTC is output. Refer to «DIAGNOSIS SYSTEM»(ref-382784-S35354466232011012800000) . Result Display (DTC Output) Proceed To DTC is not output A DTC is output B B --> REPAIR CAN COMMUNICATION SYSTEM A: Go to next step
  2. INSPECT MULTIPLEX COMMUNICATION SYSTEM Check if the multiplex communication system DTC is output. Refer to «DTC CHECK / CLEAR»(ref-382788-S39836073052011012800000) . Result Display (DTC Output) Proceed To DTC is not output A DTC is output B B --> REPAIR MULTIPLEX COMMUNICATION SYSTEM A: Go to next step
  3. INSPECT SLIP INDICATOR LIGHT Connect the Techstream to the DLC3. Start the engine. Select the "Slip Indicator Light" in the Active Test and operate the SLIP indicator light by the Techstream. CHECKING SLIP INDICATOR LIGHT ON/OFF Tester Display Test Part Control Range Diagnostic Note Slip Indicator Light SLIP indicator light Indicator light ON / OFF Observe combination meter Check that the SLIP indicator light turns on or off when using the Techstream. OK The SLIP indicator light turns on or off in accordance with the Techstream. HINT: If troubleshooting has been carried out according to the PROBLEM SYMPTOMS TABLE, refer back to the table and proceed to the next step before replacing the part. Refer to «PROBLEM SYMPTOMS TABLE»(ref-382793-S35062504242011012800000) . NG --> See step 4 OK --> REPLACE SKID CONTROL ECU
  4. INSPECT COMBINATION METER ASSEMBLY Check the combination meter assembly. Refer to «PROBLEM SYMPTOMS TABLE»(ref-382731-S09984996202011012800000) . HINT: If the troubleshooting has been carried out according to the PROBLEM SYMPTOMS TABLE, refer back to the table and proceed to the next step. Refer to «PROBLEM SYMPTOMS TABLE»(ref-382793-S35062504242011012800000) . NG --> REPLACE COMBINATION METER ASSEMBLY OK --> END

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