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Contents Wiring diagrams Section: Anti-Lock/traction Control All sections

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

Anti-Lock/traction Control 57 illustrations ~14799 words

INSPECTION PROCEDURE

Note. When replacing the skid control ECU, perform initialization of linear solenoid valve and calibration. Refer to INITIALIZATION .

Scheme 157

Scheme 157: PROCEDURE
Scheme 157: PROCEDURE

Scheme 158

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Scheme 160

Scheme 160
Scheme 160
  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 FR Speed Open FR speed sensor open detection / ERROR or NORMAL ERROR: Momentary interruption NORMAL: Normal FL Speed Open FL speed 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 --> REPAIR OR REPLACE HARNESS OR CONNECTOR (SPEED SENSOR CIRCUIT) OK: Go to next step
  2. READ VALUE USING TECHSTREAM (FRONT SPEED SENSOR) Connect the Techstream to the DLC3. Start the engine. Select the Data List mode on the Techstream. CHECKING SPEED VALUE Tester Display Measurement Item/Range Normal Condition FR Wheel Speed Wheel speed sensor (FR) reading / min.: 0 km/h (0 mph), max.: 326.4 km/h (202 mph) Actual wheel speed FL Wheel Speed Wheel speed sensor (FL) reading / min.: 0 km/h (0 mph), max.: 326.4 km/h (202 mph) Actual wheel speed Check that the speed value output from the speed sensor displayed on the Techstream and the speed value displayed on the speedometer are almost the same when driving the vehicle. OK The speed value output from the speed sensor displayed on the Techstream is the same as the actual vehicle speed. WHEEL DIRECTION DISPLAY Tester Display Measurement Item/Range Normal Condition FR Wheel Direction Wheel direction (FR) / FORWARD or BACK FORWARD: Forward BACK: Back FL Wheel Direction Wheel direction (FL) / FORWARD or BACK FORWARD: Forward BACK: Back Check that the sensor signal conforms to the wheel direction. OK The wheel direction is displayed. NG --> See step 5 OK: Go to next step
  3. PERFORM TEST MODE (SIGNAL CHECK) Clear the DTC. Refer to «DTC CHECK / CLEAR»(ref-382793-S21584973372011012800000) . Perform sensor signal check in TEST MODE PROCEDURE. Refer to «TEST MODE PROCEDURE»(ref-382793-S24952614992011012800000) . OK All Test Mode DTCs are erased. NG --> See step 5 OK: Go to next step
  4. RECONFIRM DTC Clear the DTC. Refer to «DTC CHECK / CLEAR»(ref-382793-S21584973372011012800000) . Start the engine. Drive the vehicle at the speed of 32 km/h (20 mph) or more for 60 seconds or more. Check if the same DTCs are recorded. Refer to «DTC CHECK / CLEAR»(ref-382793-S21584973372011012800000) . Result Display (DTC Output) Proceed To DTCs (C0200/31 and C0205/32) are not output A DTCs (C0200/31 and C0205/32) are output B 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) . B --> See step 11 A --> END
  5. INSPECT FRONT SPEED SENSOR INSTALLATION Check the sensor installation. OK There is no clearance between the sensor and the front steering knuckle. NOTE: Check the speed sensor signal after replacement. Refer to «TEST MODE PROCEDURE»(ref-382793-S24952614992011012800000) . NG --> CHECK AND REPLACE FRONT SPEED SENSOR OK: Go to next step
  6. INSPECT FRONT SPEED SENSOR TIP Remove the front speed sensor. Check the sensor tip. OK No scratches or foreign matter on the sensor tip. NOTE: Check the speed sensor signal after cleaning/replacement. Refer to «TEST MODE PROCEDURE»(ref-382793-S24952614992011012800000) . NG --> CLEAN OR REPLACE FRONT SPEED SENSOR OK: Go to next step
  7. CHECK HARNESS AND CONNECTOR (SKID CONTROL SENSOR WIRE) Disconnect the skid control sensor wire. Measure the resistance according to the value(s) in the table below. Resistance RH (top chart) LH (bottom chart) Tester Connection Specified Condition t1 ("A"-2) - t1 ("B"-1) Below 1 ohms t1 ("A"-2) - t1 ("B"-2) 10 kohms or higher t1 ("A"-2) - Body ground 10 kohms or higher t1 ("A"-1) - t1 ("B"-2) Below 1 ohms t1 ("A"-1) - t1 ("B"-1) 10 kohms or higher t1 ("A"-1) - Body ground 10 kohms or higher Tester Connection Specified Condition q3 ("A"-2) - q3 ("B"-2) Below 1 ohms q3 ("A"-2) - q3 ("B"-1) 10 kohms or higher q3 ("A"-2) - Body ground 10 kohms or higher q3 ("A"-1) - q3 ("B"-1) Below 1 ohms q3 ("A"-1) - q3 ("B"-2) 10 kohms or higher q3 ("A"-1) - Body ground 10 kohms or higher NOTE: Check the speed sensor signal after replacement. Refer to «TEST MODE PROCEDURE»(ref-382793-S24952614992011012800000) . NG --> REPLACE SKID CONTROL SENSOR WIRE OK: Go to next step
  8. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU TO FRONT SPEED SENSOR) Disconnect the skid control ECU (A13, A15) connectors and the front speed sensor connector. Measure the resistance according to the value(s) in the table below. Resistance RH (top chart) LH (bottom chart) Tester Connection Specified Condition A13-15 (FR+) - t1-2 (FR+) Below 1 ohms A13-28 (FR-) - t1-1 (FR-) Below 1 ohms Tester Connection Specified Condition A15-15 (FL+) - q3-2 (FL+) Below 1 ohms A15-29 (FL-) - q3-1 (FL-) Below 1 ohms Measure the resistance according to the value(s) in the table below. Resistance RH (top chart) LH (bottom chart) Tester Connection Specified Condition A13-15 (FR+) - Body ground 10 kohms or higher A13-28 (FR-) - Body ground 10 kohms or higher Tester Connection Specified Condition A15-15 (FL+) - Body ground 10 kohms or higher A15-29 (FL-) - Body ground 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  9. INSPECT SKID CONTROL ECU (SENSOR INPUT VOLTAGE) Reconnect the skid control ECU (A13, A15) connectors. Disconnect the speed sensor connector. Turn the engine switch on (IG). Measure the voltage according to the value(s) in the table below. Voltage Tester Connection Condition Specified Condition t1-2 (FR+) - Body ground Engine switch on (IG) 6.7 to 14 V q3-2 (FL+) - Body ground Engine switch on (IG) 6.7 to 14 V NG --> REPLACE SKID CONTROL ECU OK: Go to next step
  10. RECONFIRM DTC Clear the DTC. Refer to «DTC CHECK / CLEAR»(ref-382793-S21584973372011012800000) . Start the engine. Drive the vehicle at the speed of 32 km/h (20 mph) or more for 60 seconds or more. Check if the same DTCs are 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 DTCs (C0200/31 and C0205/32) are not output A DTCs (C0200/31 and C0205/32) are output B 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) . B --> See step 11 A --> END
  11. REPLACE FRONT SPEED SENSOR Replace the front speed sensor. Refer to «REMOVAL»(ref-382770-S24465113052011012800000) . NOTE: Check the speed sensor signal after replacement. Refer to «TEST MODE PROCEDURE»(ref-382793-S24952614992011012800000) . NEXT: Go to next step
  12. RECONFIRM DTC Clear the DTC. Refer to «DTC CHECK / CLEAR»(ref-382793-S21584973372011012800000) . Start the engine. Drive the vehicle at the speed of 32 km/h (20 mph) or more for 60 seconds or more. Check if the same DTCs are 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 DTCs (C0200/31 and C0205/32) are output A DTCs (C0200/31 and C0205/32) are not output B 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) . B --> END A: Go to next step
  13. INSPECT SPEED SENSOR ROTOR Remove the speed sensor rotor. Check the sensor rotor. OK No scratches, oil, or foreign matter on the rotors. NOTE: Check the speed sensor signal after cleaning/replacement. Refer to «TEST MODE PROCEDURE»(ref-382793-S24952614992011012800000) . NG --> CLEAN OR REPLACE SPEED SENSOR ROTOR OK --> REPLACE SKID CONTROL ECU

Note. When replacing the skid control ECU, perform initialization of linear solenoid valve and calibration. Refer to INITIALIZATION .

Scheme 161

Scheme 161: PROCEDURE
Scheme 161: PROCEDURE

Scheme 162

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Scheme 162

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Scheme 164
  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 RR Speed Open RR speed sensor open detection / ERROR or NORMAL ERROR: Momentary interruption NORMAL: Normal RL Speed Open RL speed 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 --> REPAIR OR REPLACE HARNESS OR CONNECTOR (SPEED SENSOR CIRCUIT) OK: Go to next step
  2. READ VALUE USING TECHSTREAM (REAR SPEED SENSOR) Connect the Techstream to the DLC3. Start the engine. Select the Data List mode on the Techstream. CHECKING SPEED VALUE Tester Display Measurement Item/Range Normal Condition RL Wheel Speed Wheel speed sensor (RL) reading / min.: 0 km/h (0 mph), max.: 326.4 km/h (202 mph) Actual wheel speed RR Wheel Speed Wheel speed sensor (RR) reading / min.: 0 km/h (0 mph), max.: 326.4 km/h (202 mph) Actual wheel speed Check that the speed value output from the speed sensor displayed on the Techstream and the speed value displayed on the speedometer are almost the same when driving the vehicle. OK The speed value output from the speed sensor displayed on the Techstream is the same as the actual vehicle speed. WHEEL DIRECTION DISPLAY Tester Display Measurement Item/Range Normal Condition RR Wheel Direction Wheel direction (RR) / FORWARD or BACK FORWARD: Forward BACK: Back RL Wheel Direction Wheel direction (RL) / FORWARD or BACK FORWARD: Forward BACK: Back Check that the sensor signal conforms to the wheel direction. OK The wheel direction is displayed. NG --> See step 5 OK: Go to next step
  3. PERFORM TEST MODE (SIGNAL CHECK) Clear the DTC. Refer to «DTC CHECK / CLEAR»(ref-382793-S21584973372011012800000) . Perform sensor signal check in TEST MODE PROCEDURE. Refer to «TEST MODE PROCEDURE»(ref-382793-S24952614992011012800000) . OK All Test Mode DTCs are erased. NG --> See step 5 OK: Go to next step
  4. RECONFIRM DTC Clear the DTC. Refer to «DTC CHECK / CLEAR»(ref-382793-S21584973372011012800000) . Start the engine. Drive the vehicle at the speed of 32 km/h (20 mph) or more for 60 seconds or more. Check if the same DTCs are recorded. Refer to «DTC CHECK / CLEAR»(ref-382793-S21584973372011012800000) . Result Display (DTC Output) Proceed To DTCs (C0210/33 and C0215/34) are not output A DTCs (C0210/33 and C0215/34) are output B 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) . B --> See step 11 A --> END
  5. INSPECT REAR SPEED SENSOR INSTALLATION Check the sensor installation. OK There is no clearance between the sensor and the rear axle carrier. The installation bolt is tightened properly. Torque: 8.5 N*m (87 kgf*cm, 75 in.*lbf) NOTE: Check the speed sensor signal after replacement. Refer to «TEST MODE PROCEDURE»(ref-382793-S24952614992011012800000) . NG --> CHECK AND REPLACE REAR SPEED SENSOR OK: Go to next step
  6. INSPECT REAR SPEED SENSOR TIP Remove the rear speed sensor. Check the sensor tip. OK No scratches or foreign matter on the sensor tip. NOTE: Check the speed sensor signal after cleaning/replacement. Refer to «TEST MODE PROCEDURE»(ref-382793-S24952614992011012800000) . NG --> CLEAN OR REPLACE REAR SPEED SENSOR OK: Go to next step
  7. CHECK HARNESS AND CONNECTOR (SKID CONTROL SENSOR WIRE) Disconnect the skid control sensor wire. Measure the resistance according to the value(s) in the table below. Resistance RH (top chart) LH (bottom chart) Tester Connection Specified Condition n1 ("A"-2) - n1 ("B"-4) Below 1 ohms n1 ("A"-2) - n1 ("B"-5) 10 kohms or higher n1 ("A"-2) - Body ground 10 kohms or higher n1 ("A"-1) - n1 ("B"-5) Below 1 ohms n1 ("A"-1) - n1 ("B"-4) 10 kohms or higher n1 ("A"-1) - Body ground 10 kohms or higher Tester Connection Specified Condition o1 ("A"-2) - o1 ("B"-4) Below 1 ohms o1 ("A"-2) - o1 ("B"-5) 10 kohms or higher o1 ("A"-2) - Body ground 10 kohms or higher o1 ("A"-1) - o1 ("B"-5) Below 1 ohms o1 ("A"-1) - o1 ("B"-4) 10 kohms or higher o1 ("A"-1) - Body ground 10 kohms or higher NOTE: Check the speed sensor signal after replacement. Refer to «TEST MODE PROCEDURE»(ref-382793-S24952614992011012800000) . NG --> REPLACE SKID CONTROL SENSOR WIRE OK: Go to next step
  8. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU TO REAR SPEED SENSOR) Disconnect the skid control ECU (A13, A15) connectors and the rear speed sensor connector. Measure the resistance according to the value(s) in the table below. Resistance RH (top chart) LH (bottom chart) Tester Connection Specified Condition A15-11 (RR+) - n1-2 (RR+) Below 1 ohms A15-27 (RR-) - n1-1 (RR-) Below 1 ohms Tester Connection Specified Condition A13-11 (RL+) - o1-2 (RL+) Below 1 ohms A13-12 (RL-) - o1-1 (RL-) Below 1 ohms Measure the resistance according to the value(s) in the table below. Resistance RH (top chart) LH (bottom chart) Tester Connection Specified Condition A15-11 (RR+) - Body ground 10 kohms or higher A15-27 (RR-) - Body ground 10 kohms or higher Tester Connection Specified Condition A13-11 (RL+) - Body ground 10 kohms or higher A13-12 (RL-) - Body ground 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  9. INSPECT SKID CONTROL ECU (SENSOR INPUT VOLTAGE) Reconnect the skid control ECU (A13, A15) connectors. Disconnect the speed sensor connector. Turn the engine switch on (IG). Measure the voltage according to the value(s) in the table below. Voltage Tester Connection Condition Specified Condition n1-2 (RR+) - Body ground Engine switch on (IG) 6.7 to 14 V o1-2 (RL+) - Body ground Engine switch on (IG) 6.7 to 14 V NG --> REPLACE SKID CONTROL ECU OK: Go to next step
  10. RECONFIRM DTC Clear the DTC. Refer to «DTC CHECK / CLEAR»(ref-382793-S21584973372011012800000) . Start the engine. Drive the vehicle at the speed of 32 km/h (20 mph) or more for 60 seconds or more. Check if the same DTCs are 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 DTCs (C0210/33 and C0215/34) are not output A DTCs (C0210/33 and C0215/34) are output B 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) . B --> See step 11 A --> END
  11. REPLACE REAR SPEED SENSOR Replace the rear speed sensor. Refer to «REMOVAL»(ref-382770-S15338768112011012800000) . NOTE: Check the speed sensor signal after replacement. Refer to «TEST MODE PROCEDURE»(ref-382793-S24952614992011012800000) . NEXT: Go to next step
  12. RECONFIRM DTC Clear the DTC. Refer to «DTC CHECK / CLEAR»(ref-382793-S21584973372011012800000) . Start the engine. Drive the vehicle at the speed of 32 km/h (20 mph) or more for 60 seconds or more. Check if the same DTCs are 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 DTCs (C0210/33 and C0215/34) are output A DTCs (C0210/33 and C0215/34) are not output B 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) . B --> END A: Go to next step
  13. INSPECT SPEED SENSOR ROTOR Remove the speed sensor rotor. Check the sensor rotor. OK No scratches, oil, or foreign matter on the rotors. NOTE: Check the speed sensor signal after cleaning/replacement. Refer to «TEST MODE PROCEDURE»(ref-382793-S24952614992011012800000) . NG --> CLEAN OR REPLACE SPEED SENSOR ROTOR OK --> REPLACE SKID CONTROL ECU

Note. When replacing the skid control ECU, perform initialization of linear solenoid valve and calibration. Refer to INITIALIZATION .

Scheme 165

Scheme 165: PROCEDURE
Scheme 165: PROCEDURE

Scheme 166

Scheme 166
Scheme 166

Scheme 167

Scheme 167
Scheme 167
  1. CHECK BRAKE FLUID LEVEL IN RESERVOIR Check that the brake fluid level is sufficient. HINT: When releasing the parking brake, set the chocks to hold the vehicle for safety. If the fluid level drops, check for a fluid leak, and repair if found. If no leak exists, add and adjust fluid and then check that the trouble code is not output again. OK Brake fluid level is proper. NG --> CHECK AND REPAIR BRAKE FLUID LEAKAGE AND ADD FLUID OK: Go to next step
  2. INSPECT BRAKE FLUID LEVEL WARNING SWITCH Disconnect the brake fluid level warning switch connector. Measure the resistance according to the value(s) in the table below. HINT: A float is placed inside the reservoir. Its position can be changed by increasing/decreasing the level of brake fluid. Resistance Tester Connection Condition Specified Condition 1 - 2 Float up (Switch OFF) 1.84 to 2.16 kohms 1 - 2 Float down (Switch ON) Below 1 ohms HINT: If there is no problem after finishing the above check, adjust the brake fluid level to the MAX level with the engine switch on (IG). NG --> REPLACE BRAKE MASTER CYLINDER RESERVOIR ASSEMBLY OK: Go to next step
  3. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU TO BRAKE FLUID LEVEL WARNING SWITCH) Disconnect the skid control ECU connector and brake fluid level warning switch connector. Measure the resistance according to the value(s) in the table below. Resistance Tester Connection Specified Condition A15-13 (LBL) - A22-2 (LBL) Below 1 ohms A15-13 (LBL) - Body ground 10 kohms or higher A22-1 (GND) - Body ground Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  4. INSPECT SKID CONTROL ECU (SWITCH INPUT VOLTAGE) Reconnect the skid control ECU connector. Disconnect the brake fluid level warning switch connector. Turn the engine switch on (IG). Measure the voltage according to the value(s) in the table below. Voltage Tester Connection Specified Condition A22-2 - Body ground 8 to 14 V NG --> REPLACE SKID CONTROL ECU OK: Go to next step
  5. RECONFIRM DTC Clear the DTCs. 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 (C1202/68) is output A DTC (C1202/68) is not output B 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) . B --> END A --> REPLACE SKID CONTROL ECU

HINT

Check that the part numbers of the installed ECM and skid control ECU are correct before performing the following procedure.

Note. When replacing the skid control ECU, perform initialization of the linear solenoid valve and calibration. Refer to INITIALIZATION .

HINT

When U0123/62, U0124/95 or U0126/63 is output along with C1210/36 or C1336/98, inspect and repair the trouble areas indicated by U0123/62, U0124/95 or U0126/63 first.

HINT

  1. When U0073/94, U0100/65, U0123/62, U0124/95, U0126/63, U0130/68 or U0131/67 is output together with C1231/31, inspect and repair the trouble areas indicated by U0073/94, U0100/65, U0123/62, U0124/95, U0126/63, U0130/68 or U0131/67 first.
  2. When the speed sensor or the yaw rate sensor has trouble, DTCs for the steering angle sensor may be output even when the steering angle sensor is normal. When DTCs for the speed sensor or yaw rate sensor are output together with other DTCs for the steering angle sensor, inspect and repair the speed sensor and yaw rate sensor first, and then inspect and repair the steering angle sensor.

Scheme 168

Scheme 168: PROCEDURE
Scheme 168: PROCEDURE
  1. CHECK HARNESS AND CONNECTOR (MOMENTARY INTERRUPTION) Using the Techstream, check for any momentary interruption in the wire harness and connectors between the skid control ECU and the steering angle sensor. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-382793-S02622559332011012800000) . CHECKING FOR MOMENTARY INTERRUPTION Tester Display Measurement Item/Range Normal Condition Steering Open Steering angle 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 4 OK: 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) again and check that no CAN communication system DTC is output. Drive the vehicle and turn the steering wheel to the right and left at a speed of 35 km/h (24 mph) and check that no speed sensor and yaw rate sensor DTCs are output. Result Display (DTC Output) Proceed To No CAN communication system DTC and the speed sensor or yaw rate sensor DTC are output. A CAN communication system DTC is output. B Refer to «DIAGNOSIS SYSTEM»(ref-382784-S35354466232011012800000) Speed sensor or yaw rate sensor DTC is output. C Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-382793-S06502580872011012800000) HINT: If there is a malfunction in the speed sensor or the yaw rate sensor, an abnormal value may be output although the steering angle sensor is normal. If the speed sensor and the yaw rate sensor DTCs are output simultaneously, repair the sensors and inspect the steering angle sensor. C --> REPAIR CIRCUIT INDICATED BY OUTPUT CODE B --> REPAIR CAN COMMUNICATION SYSTEM ACCORDING TO OUTPUT CODE A: Go to next step
  3. INSPECT STEERING ANGLE SENSOR (IG, BAT AND ESS TERMINAL) Remove the steering wheel and the column cover lower. Disconnect the steering angle sensor connector. Measure the voltage according to the value(s) in the table below. Voltage Tester Connection Condition Specified Condition K19-1 (IG) - Body ground Engine switch on (IG) 10 to 14 V K19-3 (BAT) - Body ground Always 10 to 14 V Measure the resistance according to the value(s) in the table below. Resistance Tester Connection Condition Specified Condition K19-2 (ESS) - Body ground Engine switch off Below 1 ohms 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 --> REPAIR OR REPLACE HARNESS OR CONNECTOR (IG, BAT OR ESS CIRCUIT) OK --> REPLACE STEERING ANGLE SENSOR
  4. REPAIR OR REPLACE HARNESS OR CONNECTOR (STEERING ANGLE SENSOR TO SKID CONTROL ECU) NEXT: Go to next step
  5. 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 35 km/h (24 mph) or more. Check if the same DTC is recorded. Refer to «DTC CHECK / CLEAR»(ref-382793-S21584973372011012800000) . Result Display (DTC Output) Proceed To DTC (C1231/31) is not output A DTC (C1231/31) is output B 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) . B --> See step 2 A --> END

Note. When replacing the yaw rate and acceleration sensor, perform zero point calibration. Refer to CALIBRATION .

HINT

When U0123/62, U0124/95 or U0126/63 is output together with C1234/34, C1243/43, C1244/44, C1245/45 or C1381/97, inspect and repair the trouble areas indicated by U0123/62, U0124/95 or U0126/63 first.

Scheme 169

Scheme 169: PROCEDURE
Scheme 169: PROCEDURE

Scheme 170

Scheme 170
Scheme 170
  1. CHECK DTC Clear the DTC. Refer to «DTC CHECK / CLEAR»(ref-382793-S21584973372011012800000) . Turn the engine switch off. At a speed of 30 km/h (18 mph) or more, drive the vehicle, turn the steering wheel, and decelerate (depress the brake pedal). Turn the engine switch on (IG) again and check that no CAN communication system DTC is output. Check that no DTCs for zero point calibration of the yaw rate sensor undone (C1210/36) and for zero point calibration of the acceleration sensor undone (C1336/98) are output. Result Display (DTC Output) Proceed To DTCs (C1210/36, C1336/98, and CAN communication system malfunction) are not output. A CAN communication system DTC is output. B Refer to «DIAGNOSIS SYSTEM»(ref-382784-S35354466232011012800000) C1210/36 and C1336/98 are output. C Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-382793-S06502580872011012800000) C --> REPAIR CIRCUIT INDICATED BY OUTPUT CODE B --> REPAIR CAN COMMUNICATION SYSTEM ACCORDING TO OUTPUT CODE A: Go to next step
  2. CHECK YAW RATE AND ACCELERATION SENSOR INSTALLATION Check that the yaw rate and acceleration sensor has been installed properly. OK The sensor is installed to the specified torque. The sensor is not tilted. NG --> INSTALL YAW RATE AND ACCELERATION SENSOR CORRECTLY OK: Go to next step
  3. INSPECT YAW RATE AND ACCELERATION SENSOR (IG TERMINAL) Disconnect the yaw rate and acceleration sensor connector. Turn the engine switch on (IG). Measure the voltage according to the value(s) in the table below. Voltage Tester Connection Specified Condition K35-5 (IG) - Body ground 10 to 14 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (IG CIRCUIT) OK: Go to next step
  4. INSPECT YAW RATE AND ACCELERATION SENSOR (GND TERMINAL) Disconnect the yaw rate and acceleration sensor connector. Measure the resistance according to the value(s) in the table below. Resistance Tester Connection Specified Condition K35-1 (GND) - Body ground Below 1 ohms NOTE: Check the yaw rate and acceleration sensor signal after replacement. Refer to «TEST MODE PROCEDURE»(ref-382793-S24952614992011012800000) . 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 --> REPAIR OR REPLACE HARNESS OR CONNECTOR (GND CIRCUIT) OK --> REPLACE YAW RATE AND ACCELERATION SENSOR

Note. When replacing the skid control ECU, perform initialization of linear solenoid valve and calibration. Refer to INITIALIZATION .

Scheme 171

Scheme 171: PROCEDURE
Scheme 171: PROCEDURE

Scheme 172

Scheme 172
Scheme 172
  1. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU TO SPEED SENSOR) Disconnect the skid control ECU (A13, A15) connectors and each speed sensor connector. Measure the resistance according to the value(s) in the table below. Resistance RH (top chart) LH (bottom chart) Tester Connection Specified Condition A13-15 (FR+) - t1-2 (FR+) Below 1 ohms A13-28 (FR-) - t1-1 (FR-) Below 1 ohms A15-11 (RR+) - n1-2 (RR+) Below 1 ohms A15-27 (RR-) - n1-1 (RR-) Below 1 ohms Tester Connection Specified Condition A15-15 (FL+) - q3-2 (FL+) Below 1 ohms A15-29 (FL-) - q3-1 (FL-) Below 1 ohms A13-11 (RL+) - o1-2 (RL+) Below 1 ohms A13-12 (RL-) - o1-1 (RL-) Below 1 ohms Measure the resistance according to the value(s) in the table below. Resistance RH (top chart) LH (bottom chart) Tester Connection Specified Condition A13-15 (FR+) - Body ground 10 kohms or higher A13-28 (FR-) - Body ground 10 kohms or higher A15-11 (RR+) - Body ground 10 kohms or higher A15-27 (RR-) - Body ground 10 kohms or higher Tester Connection Specified Condition A15-15 (FL+) - Body ground 10 kohms or higher A15-29 (FL-) - Body ground 10 kohms or higher A13-11 (RL+) - Body ground 10 kohms or higher A13-12 (RL-) - Body ground 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  2. INSPECT SKID CONTROL ECU (SENSOR INPUT VOLTAGE) Reconnect the skid control ECU (A13, A15) connectors. Disconnect each speed sensor connector. Turn the engine switch on (IG). Measure the voltage according to the value(s) in the table below. Voltage Tester Connection Condition Specified Condition t1-2 (FR+) - Body ground Engine switch on (IG) 6.7 to 14 V q3-2 (FL+) - Body ground Engine switch on (IG) 6.7 to 14 V n1-2 (RR+) - Body ground Engine switch on (IG) 6.7 to 14 V o1-2 (RL+) - Body ground Engine switch on (IG) 6.7 to 14 V NG --> REPLACE SKID CONTROL ECU OK: Go to next step
  3. RECONFIRM DTC Clear the DTC. Refer to «DTC CHECK / CLEAR»(ref-382793-S21584973372011012800000) . Start the engine. Drive the vehicle at the speed of 20 km/h (12 mph) or more for 60 seconds or more. Check if the same DTCs are 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 DTCs (C1235/35, C1236/36, C1238/38 and C1239/39) are output A DTCs (C1235/35, C1236/36, C1238/38 and C1239/39) are not output B B --> END A: Go to next step
  4. INSPECT SPEED SENSOR TIP Remove each speed sensor. Refer to «REMOVAL»(ref-382770-S24465113052011012800000) for front, or. Refer to «REMOVAL»(ref-382770-S15338768112011012800000) for rear). Check the sensor tip. OK No scratches or foreign matter on the sensor tip. NOTE: Check the speed sensor signal after replacement. Refer to «TEST MODE PROCEDURE»(ref-382793-S24952614992011012800000) . NG --> CLEAN OR REPLACE SPEED SENSOR OK: Go to next step
  5. INSPECT SPEED SENSOR ROTOR Remove the speed sensor rotor. Check the sensor rotor. OK No scratches, oil, or foreign matter on the rotors. NOTE: Check the speed sensor signal after cleaning/replacement. Refer to «TEST MODE PROCEDURE»(ref-382793-S24952614992011012800000) . NG --> CLEAN OR REPLACE SPEED SENSOR ROTOR OK: Go to next step
  6. 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 (C1235/35, C1236/36, C1238/38 and C1239/39) are not output A DTCs (C1235/35, C1236/36, C1238/38 and C1239/39) are output B B --> REPLACE SKID CONTROL ECU A --> END

Note. When replacing the skid control ECU, perform initialization of linear solenoid valve and calibration. Refer to INITIALIZATION .

Scheme 173

Scheme 173: PROCEDURE
Scheme 173: PROCEDURE

Scheme 174

Scheme 174
Scheme 174
  1. INSPECT BATTERY Check the battery voltage. Voltage 11 to 14 V NG --> INSPECT CHARGING SYSTEM OK: Go to next step
  2. 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 (C1311/11, C1312/12, C1313/13, C1314/14 and SFI system malfunction) are not output A SFI system DTC is output B Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-382736-S31901217882011012800000) DTCs (C1311/11, C1312/12, C1313/13 and C1314/14) 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
  3. INSPECT SKID CONTROL ECU (IG AND DI TERMINALS) Disconnect the skid control ECU (A13, A15) connectors. Measure the voltage according to the value(s) in the table below. Voltage Tester Connection Condition Specified Condition A13-16 (IG1) - Body ground Engine switch on (IG) 10 to 14 V A13-39 (DI1) - Body ground Always 10 to 14 V A15-16 (IG2) - Body ground Engine switch on (IG) 10 to 14 V A15-38 (DI2) - Body ground Always 10 to 14 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (IG OR DI CIRCUIT) OK: Go to next step
  4. INSPECT SKID CONTROL ECU (GND TERMINAL) Disconnect the skid control ECU (A13, A15) connectors. Measure the resistance according to the value(s) in the table below. Resistance Tester Connection Specified Condition A13-1 (GND) - Body ground Below 1 ohms A15-1 (GND4) - Body ground Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (GND CIRCUIT) OK: Go to next step
  5. RECONFIRM DTC Clear the DTC. 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 (C1241/41 and C1242/42) are not output A DTCs (C1241/41 and C1242/42) are output B 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) . B --> REPLACE SKID CONTROL ECU A --> END

Note. When replacing the skid control ECU or brake actuator assembly, perform initialization of linear solenoid valve and calibration. Refer to INITIALIZATION .

Scheme 175

Scheme 175: PROCEDURE
Scheme 175: PROCEDURE
  1. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU TO BRAKE ACTUATOR ASSEMBLY) Disconnect the skid control ECU (A13, A15) connectors and brake actuator assembly connector. Measure the resistance according to the value(s) in the table below. Resistance Tester Connection Specified Condition A13-9 (PCK1) - A16-37 (PCK1) Below 1 ohms A13-14 (PMC1) - A16-38 (PMC1) Below 1 ohms A13-26 (PAC1) - A16-46 (PAC1) Below 1 ohms A13-27 (VCM) - A16-35 (VCM) Below 1 ohms A13-42 (PRL) - A16-36 (PRL) Below 1 ohms A13-43 (E) - A16-45 (E) Below 1 ohms A13-44 (PFR) - A16-34 (PFR) Below 1 ohms A15-7 (PCK2) - A16-42 (PCK2) Below 1 ohms A15-14 (PMC2) - A16-43 (PMC2) Below 1 ohms A15-28 (VCM2) - A16-40 (VCM2) Below 1 ohms A15-43 (PRR) - A16-41 (PRR) Below 1 ohms A15-44 (E2) - A16-44 (E2) Below 1 ohms A15-45 (PFL) - A16-39 (PFL) Below 1 ohms Measure the resistance according to the value(s) in the table below. Resistance Tester Connection Specified Condition A13-9 (PCK1) - Body ground 10 kohms or higher A13-14 (PMC1) - Body ground 10 kohms or higher A13-26 (PAC1) - Body ground 10 kohms or higher A13-27 (VCM) - Body ground 10 kohms or higher A13-42 (PRL) - Body ground 10 kohms or higher A13-43 (E) - Body ground 10 kohms or higher A13-44 (PFR) - Body ground 10 kohms or higher A15-7 (PCK2) - Body ground 10 kohms or higher A15-14 (PMC2) - Body ground 10 kohms or higher A15-28 (VCM2) - Body ground 10 kohms or higher A15-43 (PRR) - Body ground 10 kohms or higher A15-44 (E2) - Body ground 10 kohms or higher A15-45 (PFL) - Body ground 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  2. READ VALUE USING TECHSTREAM (MASTER CYLINDER 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 Master Cylinder Sensor Master cylinder pressure sensor 1 reading / min.: 0 V, max.: 5 V When brake pedal is released: 0.3 to 0.9 V Master Cylinder Sensor 2 Master cylinder pressure sensor 2 reading / min.: 0 V, max.: 5 V When brake pedal is released: 0.3 to 0.9 V Check the output value of the master cylinder pressure sensor on the Techstream display. OK When the pedal is depressed, the voltage displayed on the Techstream increases. NG --> REPLACE BRAKE ACTUATOR ASSEMBLY OK: Go to next step
  3. READ VALUE USING TECHSTREAM (WHEEL CYLINDER PRESSURE SENSOR) Connect the pedal effort gauge. Install the LSPV gauge (SST) and bleed air. Refer to «BLEEDING»(ref-382718-S21817371922011012800000) . SST: 09709-29018 Connect the Techstream to the DLC3. Select the Data List mode on the Techstream. CHECKING OUTPUT VOLTAGE Tester Display Measurement Item/Range Normal Condition FR W/C Sensor FR wheel cylinder pressure sensor / min.: 0 V, max.: 5 V When brake pedal is released: 0.3 to 0.9 V FL W/C Sensor FL wheel cylinder pressure sensor / min.: 0 V, max.: 5 V When brake pedal is released: 0.3 to 0.9 V RR W/C Sensor RR wheel cylinder pressure sensor / min.: 0 V, max.: 5 V When brake pedal is released: 0.3 to 0.9 V RL W/C Sensor RL wheel cylinder pressure sensor / min.: 0 V, max.: 5 V When brake pedal is released: 0.3 to 0.9 V Check the output value of the wheel cylinder pressure sensor at each fluid pressure during the Electronically Controlled Brake System control. Voltage Front Wheel Cylinder Pressure Sensor (top chart) Rear Wheel Cylinder Pressure Sensor (bottom chart) Fluid Pressure MPa (kgf/cm 2 , psi) FR W/C Sensor (Data List) FL W/C Sensor (Data List) 3.2 (32.6, 464) 1.0 to 1.3 V 1.0 to 1.3 V 7.0 (71.4, 1016) 1.75 to 2.05 V 1.75 to 2.05 V 8.3 (84.6, 1203) 2.05 to 2.35 V 2.05 to 2.35 V Fluid Pressure MPa (kgf/cm 2 , psi) RR W/C Sensor (Data List) RL W/C Sensor (Data List) 3.1 (31.6, 449) 1.0 to 1.3 V 1.0 to 1.3 V 4.0 (40.8, 580) 1.15 to 1.45 V 1.15 to 1.45 V NG --> REPLACE BRAKE ACTUATOR ASSEMBLY OK: Go to next step
  4. RECONFIRM DTC Clear the DTC. Refer to «DTC CHECK / CLEAR»(ref-382793-S21584973372011012800000) . Perform the road and braking test. Check if the same DTCs are 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 DTCs (C1246/46 and C1364/61) are output A DTCs (C1246/46 and C1364/61) are not output B B --> END A: Go to next step
  5. CHECK FREEZE FRAME DATA Check the information code from the Freeze Frame Data memorized when the DTCs (C1246/46 and C1364/61) are stored. Refer to «FREEZE FRAME DATA»(ref-382793-S41860830772011012800000) . Result Condition Proceed To Sensor power supply malfunction codes (191, 194, 221, 227, 233 and 239) are output A Sensor output malfunction codes (except 191, 194, 221, 227, 233 and 239) are output B B --> REPLACE BRAKE ACTUATOR ASSEMBLY A --> REPLACE SKID CONTROL ECU

Note. When replacing the skid control ECU or brake pedal stroke sensor, perform initialization of linear solenoid valve and calibration. Refer to INITIALIZATION .

Scheme 176

Scheme 176: PROCEDURE
Scheme 176: PROCEDURE

Scheme 177

Scheme 177
Scheme 177
  1. CHECK BRAKE PEDAL Check that the brake pedal and the brake pedal stroke sensor are properly installed and that the pedal can be operated normally. OK The brake pedal is securely installed and can be operated normally. Check the brake pedal height. Refer to «ADJUSTMENT»(ref-382718-S32599818342011012800000) . OK The pedal height is within the specified range. NG --> ADJUST BRAKE PEDAL OK: Go to next step
  2. READ VALUE USING TECHSTREAM (BRAKE PEDAL STROKE SENSOR) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Select the Data List mode on the Techstream. CHECKING PEDAL STROKE SENSOR VOLTAGE Tester Display Measurement Item/Range Normal Condition Stroke Sensor Stroke sensor / min.: 0 V, max.: 5 V When brake pedal is released: 0.7 to 1.3 V Stroke Sensor 2 Stroke sensor 2 / min.: 0 V, max.: 5 V When brake pedal is released: 3.7 to 4.3 V Read the pedal stroke sensor voltage value on the Techstream screen. OK The normal condition value is displayed on the Techstream. NG --> ADJUST BRAKE PEDAL STROKE SENSOR OK: Go to next step
  3. 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
  4. 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 (C1247/47 and C1392/48) are not output A DTCs (C1247/47 and C1392/48) are output B B --> See step 5 A --> END
  5. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU TO BRAKE PEDAL STROKE SENSOR) Disconnect the skid control ECU connector and brake pedal stroke sensor connector. Measure the resistance according to the value(s) in the table below. Resistance Tester Connection Specified Condition A14-1 (SKS2) - A36-2 (SKS2) Below 1 ohms A14-3 (SKS) - A36-4 (SKS1) Below 1 ohms A14-4 (SKG) - A36-1 (SKG) Below 1 ohms A14-5 (VCSK) - A36-3 (VCSK) Below 1 ohms Measure the resistance according to the value(s) in the table below. Resistance Tester Connection Specified Condition A14-1 (SKS2) - Body ground 10 kohms or higher A14-3 (SKS) - Body ground 10 kohms or higher A14-4 (SKG) - Body ground 10 kohms or higher A14-5 (VCSK) - Body ground 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  6. INSPECT SKID CONTROL ECU (SENSOR INPUT VOLTAGE) Reconnect the skid control ECU connector. Disconnect the brake pedal stroke sensor connector. Measure the voltage according to the value(s) in the table below. Voltage Tester Connection Specified Condition A36-3 (VCSK) - A36-1 (SKG) 3.6 to 4.95 V NG --> REPLACE SKID CONTROL ECU OK: Go to next step
  7. READ VALUE USING TECHSTREAM (BRAKE PEDAL STROKE SENSOR) Connect the brake pedal effort gauge. 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 Stroke Sensor Stroke sensor / min.: 0 V, max.: 5 V When brake pedal is released: 0.7 to 1.3 V Stroke Sensor 2 Stroke sensor 2 / min.: 0 V, max.: 5 V When brake pedal is released: 3.7 to 4.3 V When depressing the brake pedal with amount of force listed in the table below, check that the output value displayed on the Techstream is normal. HINT: The brake pedal must be depressed gradually. Voltage Brake effort N (kgf, lbf) Stroke Sensor (Data List) Stroke Sensor 2 (Data List) 50 (5.1, 11) 1.4 to 1.8 V 3.2 to 3.6 V 100 (10.2, 22) 1.55 to 1.95 V 3.05 to 3.45 V 150 (15.3, 34) 1.65 to 2.05 V 2.95 to 3.35 V 200 (20.4, 45) 1.7 to 2.1 V 2.9 to 3.3 V NG --> REPLACE BRAKE PEDAL STROKE SENSOR OK: Go to next step
  8. RECONFIRM DTC Clear the DTC. Refer to «DTC CHECK / CLEAR»(ref-382793-S21584973372011012800000) . Perform the road and braking test. Check if the same DTCs are 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 DTCs (C1247/47 and C1392/48) are not output A DTCs (C1247/47 and C1392/48) are output B B --> REPLACE SKID CONTROL ECU A --> END

Note. When replacing the skid control ECU, perform initialization of linear solenoid valve and calibration. Refer to INITIALIZATION .

Scheme 178

Scheme 178: PROCEDURE
Scheme 178: PROCEDURE

Scheme 179

Scheme 179
Scheme 179

Scheme 180

Scheme 180
Scheme 180

Scheme 181

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Scheme 182

Scheme 182
Scheme 182
  1. INSPECT FUSE (STOP SW FUSE) Remove the STOP SW fuse from the cowl side J/B RH. Check the STOP SW fuse. Resistance Below 1 ohms (Continuity) NG --> REPLACE FUSE (STOP SW FUSE) OK: Go to next step
  2. READ VALUE USING TECHSTREAM (STOP LIGHT SWITCH) Connect the Techstream to the DLC3. Start the engine. Select the Data List mode on the Techstream. CHECKING STOP LIGHT SWITCH ON/OFF Tester Display Measurement Item/Range Normal Condition Stop Light SW Stop light switch / ON or OFF ON: Brake pedal depressed OFF: Brake pedal released Check that the stop light observed on the Techstream changes when the brake pedal is depressed. OK When the brake pedal is depressed, the Techstream displays "ON". NG --> See step 8 OK: Go to next step
  3. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU TO STOP LIGHT SWITCH) Disconnect the skid control ECU connector and stop light switch connector. Measure the resistance according to the value(s) in the table below. Resistance Tester Connection Specified Condition A13-45 (STP) - A35-1 Below 1 ohms Measure the resistance according to the value(s) in the table below. Resistance Tester Connection Specified Condition A13-45 (STP) - Body ground 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  4. INSPECT STOP LIGHT SWITCH (POWER SOURCE TERMINAL) Disconnect the stop light switch connector. Measure the voltage according to the value(s) in the table below. Voltage Tester Connection Specified Condition A35-2 - Body ground 10 to 14 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT) OK: Go to next step
  5. INSPECT STOP LIGHT SWITCH Disconnect the stop light switch connector. Measure the resistance according to the value(s) in the table below. Resistance Tester Connection Condition Specified Condition 1 - 2 Switch pin free Below 1 ohms 1 - 2 Switch pin pushed in 10 kohms or higher NG --> REPLACE STOP LIGHT SWITCH OK: Go to next step
  6. INSPECT SKID CONTROL ECU (GND TERMINAL) Disconnect the skid control ECU (A13, A15) connectors. Measure the resistance according to the value(s) in the table below. Resistance Tester Connection Specified Condition A13-1 (GND) - Body ground Below 1 ohms A15-1 (GND4) - Body ground Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (GND CIRCUIT) OK: Go to next step
  7. RECONFIRM DTC Clear the DTC. Refer to «DTC CHECK / CLEAR»(ref-382793-S21584973372011012800000) . Start the engine. Depress the brake pedal several times to test the stop light circuit. 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 (C1249/49) is not output A DTC (C1249/49) is output B 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) . B --> REPLACE SKID CONTROL ECU A --> END
  8. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU TO LUGGAGE ROOM J/B ECU) Disconnect the skid control ECU connector and luggage room J/B ECU connector. Measure the resistance according to the value(s) in the table below. Resistance Tester Connection Specified Condition A13-45 (STP) - LC-32 (STP1) Below 1 ohms A13-45 (STP) - Body ground 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> INSPECT LIGHTING SYSTEM

Note. When replacing the skid control ECU or brake actuator assembly, perform initialization of linear solenoid valve and calibration. Refer to INITIALIZATION .

Scheme 183

Scheme 183: PROCEDURE
Scheme 183: PROCEDURE

Scheme 184

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Scheme 188
Scheme 188
  1. INSPECT FUSE (ABS1, ABS2 AND ABS MOTOR FUSES) Remove the ABS1, ABS2 and ABS MOTOR fuses from the engine room R/B (J/B) No. 1. Check the ABS1, ABS2 and ABS MOTOR fuses. Resistance Below 1 ohms (Continuity) NG --> REPLACE FUSE (ABS1, ABS2 OR ABS MOTOR FUSE) OK: Go to next step
  2. PERFORM ACTIVE TEST USING TECHSTREAM (ABS MOTOR RELAY) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Select the Active Test mode on the Techstream. CHECKING FOR ABS MOTOR RELAY OPERATION SOUND Tester Display Measurement Item/Range Control Range Normal Condition ECB* Motor Relay ABS motor relay 1 Relay ON / OFF Operation of relay (clicking sound) and motor can be heard ECB* Motor Relay 2 ABS motor relay 2 Relay ON / OFF Operation of relay (clicking sound) and motor can be heard *: Electronically Control Brake Check the operation sound of the ABS motor relay and motor when operating it with the Techstream. OK The operation sound of the ABS motor relay and motor is heard. NG --> See step 6 OK: Go to next step
  3. 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
  4. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU TO BRAKE ACTUATOR ASSEMBLY) Disconnect the skid control ECU connector and brake actuator assembly connector. Measure the resistance according to the value(s) in the table below. Resistance Tester Connection Specified Condition A13-37 (MTT) - A16-33 (MTT) Below 1 ohms A13-37 (MTT) - Body ground 10 kohms or higher A16-31 (GND1) - Body ground Below 1 ohms A16-32 (GND2) - Body ground Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  5. 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 Accumulator pressure sensor voltage does not drop. NG --> REPLACE BRAKE ACTUATOR ASSEMBLY OK: Go to next step
  6. INSPECT ABS MOTOR RELAY Remove the ABS MOTOR1 relay and ABS MOTOR2 relay. Measure the resistance according to the value(s) in the table below. Resistance Tester Connection Condition Specified Condition 3 - 5 Always 10 kohms or higher (No continuity) 3 - 5 Apply B+ between terminal 1 and 2 Below 1 ohms (Continuity) NG --> REPLACE ABS MOTOR RELAY OK: Go to next step
  7. INSPECT ABS MOTOR RELAY (POWER SOURCE TERMINAL) Remove the ABS MOTOR1 relay and ABS MOTOR2 relay. Measure the voltage according to the value(s) in the table below. Voltage Tester Connection Specified Condition 5 - Body ground 10 to 14 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT) OK: Go to next step
  8. CHECK HARNESS AND CONNECTOR (BRAKE ACTUATOR ASSEMBLY TO ENGINE ROOM NO. 3 R/B) Disconnect the brake actuator assembly connector. Remove the ABS MOTOR1 relay and ABS MOTOR2 relay. Measure the resistance according to the value(s) in the table below. Resistance Tester Connection Specified Condition A16-2 (BM1) - ABS MOTOR1 relay (3) Below 1 ohms A16-1 (BM2) - ABS MOTOR2 relay (3) Below 1 ohms Measure the resistance according to the value(s) in the table below. Resistance Tester Connection Specified Condition A16-2 (BM1) - Body ground 10 kohms or higher A16-1 (BM2) - Body ground 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  9. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU TO ENGINE ROOM NO. 3 R/B) Disconnect the skid control ECU (A13, A15) connectors. Remove the ABS MOTOR1 relay and ABS MOTOR2 relay. Measure the resistance according to the value(s) in the table below. Resistance Tester Connection Specified Condition A13-20 (MR1) - ABS MOTOR1 relay (2) Below 1 ohms A13-36 (R1-) - ABS MOTOR1 relay (1) Below 1 ohms A15-21 (R2-) - ABS MOTOR2 relay (1) Below 1 ohms A15-37 (MR2) - ABS MOTOR2 relay (2) Below 1 ohms Measure the resistance according to the value(s) in the table below. Resistance Tester Connection Specified Condition A13-20 (MR1) - Body ground 10 kohms or higher A13-36 (R1-) - Body ground 10 kohms or higher A15-21 (R2-) - Body ground 10 kohms or higher A15-37 (MR2) - Body ground 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  10. RECONFIRM DTC Clear the DTC. 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) . HINT: Reinstall the sensors, connectors, etc. and restore the vehicle to its prior condition before rechecking for DTCs. Result Display (DTC Output) Proceed To DTCs (C1252/52 and C1253/53) are not output A DTCs (C1252/52 and C1253/53) are output B B --> REPLACE SKID CONTROL ECU A --> END

Note. When replacing the skid control ECU or brake actuator assembly, perform initialization of linear solenoid valve and calibration. Refer to INITIALIZATION .

HINT

  1. When C1241/41, C1252/52 or C1253/53 are output together with C1256/57, inspect and repair the trouble areas indicated by C1241/41, C1252/52 or C1253/53 first.
  2. DTCs may be output if the accumulator pressure drops due to frequent braking (this is not a malfunction).

Note. When replacing the skid control ECU, perform initialization of linear solenoid valve and calibration. Refer to INITIALIZATION .

Note. When replacing the skid control ECU, perform initialization of linear solenoid valve and calibration. Refer to INITIALIZATION .

Note. When replacing the skid control ECU, perform initialization of linear solenoid valve and calibration. Refer to INITIALIZATION .

Scheme 189

Scheme 189: PROCEDURE
Scheme 189: PROCEDURE

Scheme 190

Scheme 190
Scheme 190

Scheme 191

Scheme 191
Scheme 191
  1. PERFORM ACTIVE TEST USING TECHSTREAM (ABS MAIN RELAY) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Select the Active Test mode on the Techstream. CHECKING FOR ABS MAIN RELAY OPERATION SOUND Tester Display Test Part Control Range Diagnostic Note ECB* Main Relay ABS main relay Relay ON / OFF Operation of relay (clicking sound) can be heard ECB* Main Relay 2 ABS main relay 2 Relay ON / OFF Operation of relay (clicking sound) can be heard *: Electronically Controlled Brake Check the operation sound of the ABS main relay when operating it with the Techstream. OK The operation sound of the ABS main relay is heard. NG --> See step 5 OK: Go to next step
  2. INSPECT FUSE (ABS1 AND ABS MAIN FUSES) Remove the ABS1, ABS MAIN2 and ABS MAIN3 fuses from the engine room R/B (J/B) No. 1. Check the ABS1, ABS MAIN2 and ABS MAIN3 fuses. Resistance Below 1 ohms (Continuity) NG --> REPLACE FUSE (ABS1 OR ABS MAIN FUSE) OK: Go to next step
  3. INSPECT ABS MAIN RELAY Remove the ABS MAIN1 relay and ABS MAIN2 relay. Measure the resistance according to the value(s) in the table below. Resistance Tester Connection Condition Specified Condition 3 - 5 Always 10 kohms or higher (No continuity) 3 - 5 Apply B+ between terminal 1 and 2 Below 1 ohms (Continuity) NG --> REPLACE ABS MAIN RELAY OK: Go to next step
  4. INSPECT SKID CONTROL ECU (DI TERMINAL) Disconnect the skid control ECU (A13, A15) connectors. Measure the voltage according to the value(s) in the table below. Voltage Tester Connection Specified Condition A13-39 (DI1) - Body ground 10 to 14 V A15-38 (DI2) - Body ground 10 to 14 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (DI CIRCUIT) OK: Go to next step
  5. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU TO ENGINE ROOM NO. 3 R/B) Disconnect the skid control ECU (A13, A15) connectors. Remove the ABS MAIN1 relay and ABS MAIN2 relay. Measure the resistance according to the value(s) in the table below. Resistance Tester Connection Specified Condition A13-2 (BS1) - ABS MAIN1 relay (3) Below 1 ohms A13-30 (R1+) - ABS MAIN1 relay (1) Below 1 ohms A13-38 (DO1) - ABS MAIN1 relay (5) Below 1 ohms A13-46 (R3+) - ABS MAIN1 relay (2) Below 1 ohms A15-2 (BS2) - ABS MAIN2 relay (3) Below 1 ohms A15-30 (R2+) - ABS MAIN2 relay (1) Below 1 ohms A15-39 (DO2) - ABS MAIN2 relay (5) Below 1 ohms A15-46 (R4+) - ABS MAIN2 relay (2) Below 1 ohms Measure the resistance according to the value(s) in the table below. Resistance Tester Connection Specified Condition A13-2 (BS1) - Body ground 10 kohms or higher A13-30 (R1+) - Body ground 10 kohms or higher A13-38 (DO1) - Body ground 10 kohms or higher A13-46 (R3+) - Body ground 10 kohms or higher A15-2 (BS2) - Body ground 10 kohms or higher A15-30 (R2+) - Body ground 10 kohms or higher A15-39 (DO2) - Body ground 10 kohms or higher A15-46 (R4+) - Body ground 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  6. RECONFIRM DTC Clear the DTC. 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) . HINT: Reinstall the sensors, connectors, etc. and restore the vehicle to its prior condition before rechecking for DTCs. Result Display (DTC Output) Proceed To DTCs (C1311/11, C1312/12, C1313/13 and C1314/14) are not output A DTCs (C1311/11, C1312/12, C1313/13 and C1314/14) are output B B --> REPLACE SKID CONTROL ECU A --> END

Note. When replacing the skid control ECU or brake actuator assembly, perform initialization of linear solenoid valve and calibration. Refer to INITIALIZATION .

Scheme 192

Scheme 192: PROCEDURE
Scheme 192: PROCEDURE

Scheme 193

Scheme 193
Scheme 193
  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 20 (SMC1) - 19 (BS1) 15.3 to 25.0 ohms 6 (SMC2) - 7 (BS2) 15.3 to 25.0 ohms 8 (FRA+) - 5 (FRA-) 3.6 to 6.0 ohms 22 (FRR+) - 21 (FRR-) 3.6 to 6.0 ohms 13 (FLA+) - 14 (FLA-) 3.6 to 6.0 ohms 27 (FLR+) - 28 (FLR-) 3.6 to 6.0 ohms 12 (RRA+) - 11 (RRA-) 3.6 to 6.0 ohms 10 (RLA+) - 9 (RLA-) 3.6 to 6.0 ohms 26 (RRR+) - 25 (RRR-) 4.4 to 7.0 ohms 24 (RLR+) - 23 (RLR-) 4.4 to 7.0 ohms NG --> REPLACE BRAKE ACTUATOR ASSEMBLY OK: Go to next step
  2. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU TO BRAKE ACTUATOR ASSEMBLY) Disconnect the skid control ECU (A13, A15) connectors and brake actuator assembly connector. Measure the resistance according to the value(s) in the table below. Resistance Tester Connection Specified Condition A13-5 (SMC1) - A16-20 (SMC1) Below 1 ohms A13-32 (BSO1) - A16-19 (BS1) Below 1 ohms A13-3 (FRA+) - A16-8 (FRA+) Below 1 ohms A13-18 (FRA-) - A16-5 (FRA-) Below 1 ohms A13-4 (FRR+) - A16-22 (FRR+) Below 1 ohms A13-17 (FRR-) - A16-21 (FRR-) Below 1 ohms A13-33 (RLA+) - A16-10 (RLA+) Below 1 ohms A13-35 (RLA-) - A16-9 (RLA-) Below 1 ohms A13-34 (RLR+) - A16-24 (RLR+) Below 1 ohms A13-19 (RLR-) - A16-23 (RLR-) Below 1 ohms A15-6 (SMC2) - A16-6 (SMC2) Below 1 ohms A15-32 (BSO2) - A16-7 (BS2) Below 1 ohms A15-3 (FLA+) - A16-13 (FLA+) Below 1 ohms A15-18 (FLA-) - A16-14 (FLA-) Below 1 ohms A15-4 (FLR+) - A16-27 (FLR+) Below 1 ohms A15-17 (FLR-) - A16-28 (FLR-) Below 1 ohms A15-33 (RRA+) - A16-12 (RRA+) Below 1 ohms A15-20 (RRA-) - A16-11 (RRA-) Below 1 ohms A15-34 (RRR+) - A16-26 (RRR+) Below 1 ohms A15-36 (RRR-) - A16-25 (RRR-) Below 1 ohms Measure the resistance according to the value(s) in the table below. Resistance Tester Connection Specified Condition A13-5 (SMC1) - Body ground 10 kohms or higher A13-32 (BSO1) - Body ground 10 kohms or higher A13-3 (FRA+) - Body ground 10 kohms or higher A13-18 (FRA-) - Body ground 10 kohms or higher A13-4 (FRR+) - Body ground 10 kohms or higher A13-17 (FRR-) - Body ground 10 kohms or higher A13-33 (RLA+) - Body ground 10 kohms or higher A13-35 (RLA-) - Body ground 10 kohms or higher A13-34 (RLR+) - Body ground 10 kohms or higher A13-19 (RLR-) - Body ground 10 kohms or higher A15-6 (SMC2) - Body ground 10 kohms or higher A15-32 (BSO2) - Body ground 10 kohms or higher A15-3 (FLA+) - Body ground 10 kohms or higher A15-18 (FLA-) - Body ground 10 kohms or higher A15-4 (FLR+) - Body ground 10 kohms or higher A15-17 (FLR-) - Body ground 10 kohms or higher A15-33 (RRA+) - Body ground 10 kohms or higher A15-20 (RRA-) - Body ground 10 kohms or higher A15-34 (RRR+) - Body ground 10 kohms or higher A15-36 (RRR-) - Body ground 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR 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 DTCs are 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 DTCs (C1315/31, C1316/32, C1352/21, C1353/23, C1354/25, C1355/27, C1356/22, C1357/24, C1358/26 and C1359/28) are not output A DTCs (C1315/31, C1316/32, C1352/21, C1353/23, C1354/25, C1355/27, C1356/22, C1357/24, C1358/26 and C1359/28) are output B B --> REPLACE SKID CONTROL ECU A --> END

Note. When replacing the skid control ECU, perform initialization of linear solenoid valve and calibration. Refer to INITIALIZATION .

Scheme 194

Scheme 194: PROCEDURE
Scheme 194: PROCEDURE

Scheme 195

Scheme 195
Scheme 195
  1. INSPECT BRAKE MASTER STROKE SIMULATOR CYLINDER ASSEMBLY Disconnect the brake master stroke simulator cylinder assembly connector. Measure the resistance according to the value(s) in the table below. Resistance Tester Connection Specified Condition 1 (BSR) - 2 (SCSS) 22.3 to 38 ohms NG --> REPLACE BRAKE MASTER STROKE SIMULATOR CYLINDER ASSEMBLY OK: Go to next step
  2. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU TO BRAKE MASTER STROKE SIMULATOR CYLINDER) Disconnect the skid control ECU connector and brake stroke simulator cylinder assembly connector. Measure the resistance according to the value(s) in the table below. Resistance Tester Connection Specified Condition A13-31 (BSO3) - A21-1 (BSR) Below 1 ohms A13-40 (SS) - A21-2 (SCSS) Below 1 ohms Measure the resistance according to the value(s) in the table below. Resistance Tester Connection Specified Condition A13-31 (BSO3) - Body ground 10 kohms or higher A13-40 (SS) - Body ground 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR 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 (C1319/35) is not output A DTC (C1319/35) is output B B --> REPLACE SKID CONTROL ECU A --> END

Note. When replacing the brake actuator assembly, perform initialization of linear solenoid valve and calibration. Refer to INITIALIZATION .

HINT

When C1364/61 is output together with C1341/62, C1342/63, C1343/64 and C1344/65, inspect and repair the trouble areas indicated by C1364/61 first.

Scheme 196

Scheme 196: PROCEDURE
Scheme 196: PROCEDURE
  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. PERFORM AIR BLEED Bleed the air from the front and rear brake systems. Refer to «BLEEDING»(ref-382718-S21817371922011012800000) . NEXT: Go to next step
  3. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU TO BODY GROUND) Disconnect the skid control ECU (A13, A15) connectors. Measure the resistance according to the value(s) in the table below. Resistance Tester Connection Specified Condition A13-3 (FRA+) - Body ground 10 kohms or higher A13-18 (FRA-) - Body ground 10 kohms or higher A13-4 (FRR+) - Body ground 10 kohms or higher A13-17 (FRR-) - Body ground 10 kohms or higher A13-33 (RLA+) - Body ground 10 kohms or higher A13-35 (RLA-) - Body ground 10 kohms or higher A13-34 (RLR+) - Body ground 10 kohms or higher A13-19 (RLR-) - Body ground 10 kohms or higher A15-3 (FLA+) - Body ground 10 kohms or higher A15-18 (FLA-) - Body ground 10 kohms or higher A15-4 (FLR+) - Body ground 10 kohms or higher A15-17 (FLR-) - Body ground 10 kohms or higher A15-33 (RRA+) - Body ground 10 kohms or higher A15-20 (RRA-) - Body ground 10 kohms or higher A15-34 (RRR+) - Body ground 10 kohms or higher A15-36 (RRR-) - Body ground 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  4. READ VALUE USING TECHSTREAM (WHEEL CYLINDER PRESSURE SENSOR) Connect the pedal effort gauge. Install the LSPV gauge (SST) and perform bleeding. Refer to «BLEEDING»(ref-382718-S21817371922011012800000) . SST: 09709-29018 Connect the Techstream to the DLC3. Select the Data List mode on the Techstream. CHECKING OUTPUT VOLTAGE Tester Display Measurement Item/Range Normal Condition FR W/C Sensor FR wheel cylinder pressure sensor / min.: 0 V, max.: 5 V When brake pedal is released: 0.3 to 0.9 V FL W/C Sensor FL wheel cylinder pressure sensor / min.: 0 V, max.: 5 V When brake pedal is released: 0.3 to 0.9 V RR W/C Sensor RR wheel cylinder pressure sensor / min.: 0 V, max.: 5 V When brake pedal is released: 0.3 to 0.9 V RL W/C Sensor RL wheel cylinder pressure sensor / min.: 0 V, max.: 5 V When brake pedal is released: 0.3 to 0.9 V Check the output value of the wheel cylinder pressure at each fluid pressure during the Electronically Controlled Brake System control. Voltage Front Wheel Cylinder Pressure Sensor (top chart) Rear Wheel Cylinder Pressure Sensor (bottom chart) Fluid Pressure MPa (kgf/cm 2 , psi) FR W/C Sensor (Data List) FL W/C Sensor (Data List) 3.2 (32.6, 464) 1.0 to 1.3 V 1.0 to 1.3 V 7.0 (71.4, 1016) 1.75 to 2.05 V 1.75 to 2.05 V 8.3 (84.6, 1203) 2.05 to 2.35 V 2.05 to 2.35 V Fluid Pressure MPa (kgf/cm 2 , psi) RR W/C Sensor (Data List) RL W/C Sensor (Data List) 3.1 (31.6, 449) 1.0 to 1.3 V 1.0 to 1.3 V 4.0 (40.8, 580) 1.15 to 1.45 V 1.15 to 1.45 V NG --> REPLACE BRAKE ACTUATOR ASSEMBLY OK: Go to next step
  5. CHECK BRAKE DISC Disconnect the brake pedal stroke sensor connector. Carry out the running and braking test according to Freeze Frame Data or customer problem analysis. Check the brake line pressure vibration caused due to uneven wear of the disc according to brake pedal vibration. OK Brake pedal does not vibrate during braking. HINT: The brake pedal does not kick back due to wheel cylinder piston vibration during Electronically Controlled Brake System control. If the brake pedal stroke sensor connector is disconnected, the fail-safe function will prohibit Electronically Controlled Brake System control. As the Active Test does not prohibit Electronically Controlled Brake System control when the vehicle is running, disconnect the stroke sensor connector, and then carry out the inspection. Disc wear can be checked by measuring the disc thickness. NG --> REPLACE BRAKE DISC OK: Go to next step
  6. RECONFIRM DTC Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-382793-S21584973372011012800000) . Repeat the braking test under malfunction conditions recreated based on the Freeze Frame Data or customer problem analysis. Check if the same DTCs are 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 DTCs (C1341/62, C1342/63, C1343/64 and C1344/65) are not output A DTCs (C1341/62, C1342/63, C1343/64 and C1344/65) are output B B --> REPLACE BRAKE ACTUATOR ASSEMBLY A --> END

Note. When replacing the brake actuator assembly, perform initialization of linear solenoid valve and calibration. Refer to INITIALIZATION .

Note. When replacing the skid control ECU or brake actuator assembly, perform initialization of linear solenoid valve and calibration. Refer to INITIALIZATION .

Scheme 197

Scheme 197: PROCEDURE
Scheme 197: PROCEDURE
  1. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU TO BRAKE ACTUATOR ASSEMBLY) Disconnect the skid control ECU and brake actuator assembly connector. Measure the resistance according to the value(s) in the table below. Resistance Tester Connection Specified Condition A13-9 (PCK1) - A16-37 (PCK1) Below 1 ohms A13-26 (PAC1) - A16-46 (PAC1) Below 1 ohms A13-27 (VCM) - A16-35 (VCM) Below 1 ohms A13-43 (E) - A16-45 (E) Below 1 ohms Measure the resistance according to the value(s) in the table below. Resistance Tester Connection Specified Condition A13-9 (PCK1) - Body ground 10 kohms or higher A13-26 (PAC1) - Body ground 10 kohms or higher A13-27 (VCM) - Body ground 10 kohms or higher A13-43 (E) - Body ground 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: 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) . 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 (C1365/54) is output A DTC (C1365/54) is not output B B --> END A: Go to next step
  3. CHECK FREEZE FRAME DATA Check the information code from the Freeze Frame Data memorized when the DTC (C1365/54) is stored. Refer to «FREEZE FRAME DATA»(ref-382793-S41860830772011012800000) . Result Condition Proceed To Sensor power supply voltage trouble codes (211) are output A Sensor output value trouble codes (212, 214 and 215) are output B B --> REPLACE BRAKE ACTUATOR ASSEMBLY A --> REPLACE SKID CONTROL ECU

Note. When replacing the skid control ECU, perform initialization of linear solenoid valve and calibration. Refer to INITIALIZATION .

Scheme 198

Scheme 198: PROCEDURE
Scheme 198: PROCEDURE

Scheme 199

Scheme 199
Scheme 199
  1. INSPECT BRAKE CONTROL POWER SUPPLY Disconnect the brake control power supply connector. Measure the voltage according to the value(s) in the table below. Voltage Tester Connection Specified Condition U27-5 (IG1) - Body ground 10 to 14 V Measure the resistance according to the value(s) in the table below. Resistance Tester Connection Specified Condition U27-14 (GND) - Body ground Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (IG1 OR GND CIRCUIT) OK: Go to next step
  2. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU TO BRAKE CONTROL POWER SUPPLY) Disconnect the skid control ECU and brake control power supply connector. Measure the resistance according to the value(s) in the table below. Resistance Tester Connection Specified Condition A13-8 (ENA) - U27-12 (ENA) Below 1 ohms A13-23 (FAIL) - U27-13 (FAIL) Below 1 ohms Measure the resistance according to the value(s) in the table below. Resistance Tester Connection Specified Condition A13-8 (ENA) - Body ground 10 kohms or higher A13-23 (FAIL) - Body ground 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR 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 sensor, connectors, etc. and restore the vehicle to its prior condition before rechecking for DTCs. Result Display (DTC Output) Proceed To DTC (C1378/44) is not output A DTC (C1378/44) is output B B --> See step 4 A --> END
  4. CHECK FREEZE FRAME DATA Check the information code from the Freeze Frame Data memorized when the DTC (C1378/44) is stored. Refer to «FREEZE FRAME DATA»(ref-382793-S41860830772011012800000) . Result Condition Proceed To Information code is not output A Information code (112) is output B B --> REPLACE BRAKE CONTROL POWER SUPPLY A --> REPLACE SKID CONTROL ECU

Note. When replacing the skid control ECU or brake actuator assembly, perform initialization of linear solenoid valve and calibration. Refer to INITIALIZATION .

Note. When replacing the skid control ECU, perform initialization of linear solenoid valve and calibration. Refer to INITIALIZATION . Before proceeding with the inspection, explain to the customer that the output DTC is related to temporary loss of the steering angle zero point calibration, such as when the power source voltage drops when the battery is removed, and confirm that this condition occurred.

HINT

  1. When DTC U0073/94, U0123/62, U0124/95 and/or U0126/63 is output together with DTC C1439/66 and/or C1445/66, inspect and repair the trouble areas indicated by DTC U0073/94, U0123/62, U0124/95 and/or U0126/63 first. Refer to «DTC U0073/94: Control Module Communication Bus OFF; DTC U0100/65: Lost Communication with ECM / PCM; DTC U0123/62: Lost Communication with Yaw Rate Sensor Module; DTC U0124/95: Lost Communication with Lateral Acceleration Sensor Module; DTC U0126/63: Lost Communication with Steering Angle Sensor Module; DTC U0130/68: Lost Communication with Steering Effort Control Module; DTC U0131/67: Lost Communication with Power Steering Control Module»(ref-382799-S19276730072011012800000) .
  2. When the speed sensor or the yaw rate and acceleration sensor has trouble, DTCs for the steering angle sensor may be output even when the steering angle sensor is normal. When DTCs for the speed sensor or yaw rate and acceleration sensor are output together with other DTCs for the steering angle sensor, inspect and repair the speed sensor and yaw rate and acceleration sensor first, and then inspect and repair the steering angle sensor.

HINT

When yaw rate and acceleration sensor DTC is output together with C1440/98, inspect and repair the trouble areas indicated by yaw rate and acceleration sensor DTC first. Refer to DIAGNOSTIC TROUBLE CODE CHART .

Note. When replacing the yaw rate and acceleration sensor, perform zero point calibration. Refer to CALIBRATION .

Note. When replacing the skid control ECU, perform initialization of linear solenoid valve and calibration. Refer to INITIALIZATION .

Scheme 200

Scheme 200: PROCEDURE
Scheme 200: PROCEDURE
  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 connecting condition. 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 SKID CONTROL ECU (IG1 TERMINAL) Disconnect the skid control ECU connector. Turn the engine switch on (IG). Measure the voltage according to the value(s) in the table below. Voltage Tester Connection Condition Specified Condition A13-16 (IG1) - Body ground Engine switch on (IG) 10 to 14 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (IG1 CIRCUIT) OK: Go to next step
  6. INSPECT SKID CONTROL ECU (GND TERMINAL) Disconnect the skid control ECU (A13, A15) connectors. Measure the resistance according to the value(s) in the table below. Resistance Tester Connection Specified Condition A13-1 (GND) - Body ground Below 1 ohms A15-1 (GND4) - Body ground Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (GND CIRCUIT) OK: Go to next step
  7. 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

Note. When replacing the skid control ECU, perform initialization of linear solenoid valve and calibration. Refer to INITIALIZATION .

Note. When replacing the skid control ECU, perform initialization of linear solenoid valve and calibration. Refer to INITIALIZATION .

Scheme 201

Scheme 201
Scheme 201

Scheme 202

Scheme 202
Scheme 202

Scheme 203

Scheme 203
Scheme 203
  1. CHECK DTC Check if the ABS, VSC and/or Electronically Controlled Brake System DTC is output. Refer to «DTC CHECK / CLEAR»(ref-382793-S21584973372011012800000) . Result Display (DTC Output) Proceed To DTC is not output A DTC is output B Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-382793-S06502580872011012800000) B --> REPAIR CIRCUIT INDICATED BY OUTPUT CODE A: Go to next step
  2. 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
  3. 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
  4. 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
  5. INSPECT BATTERY Check the battery voltage. Voltage 11 to 14 V NG --> INSPECT CHARGING SYSTEM OK: Go to next step
  6. INSPECT SKID CONTROL ECU (IG1 TERMINAL) Disconnect the skid control ECU connector. Turn the engine switch on (IG). Measure the voltage according to the value(s) in the table below. Voltage Tester Connection Condition Specified Condition A13-16 (IG1) - Body ground Engine switch on (IG) 10 to 14 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (IG1 CIRCUIT) OK: Go to next step
  7. INSPECT SKID CONTROL ECU (GND TERMINAL) Disconnect the skid control ECU (A13, A15) connectors. Measure the resistance according to the value(s) in the table below. Resistance Tester Connection Specified Condition A13-1 (GND) - Body ground Below 1 ohms A15-1 (GND4) - Body ground Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (GND CIRCUIT) OK: Go to next step
  8. READ VALUE USING TECHSTREAM (PARKING BRAKE SWITCH) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Select the Data List mode on the Techstream. CHECKING PARKING BRAKE SWITCH ON/OFF Tester Display Measurement Item/Range Normal Condition Parking Brake SW Parking brake switch/ ON or OFF ON: Brake pedal depressed OFF: Brake pedal replaced Using the Techstream, check the input of switch operation when the parking brake switch is operated. OK When the parking brake is operated, the display changes as shown above. NG --> See step 10 OK: Go to next step
  9. 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
  10. INSPECT PARKING BRAKE SWITCH Disconnect the parking brake switch connector. Measure the resistance according to the value(s) in the table below. Resistance Tester Connection Condition Specified Condition 1 - Body ground Parking brake switch ON (Switch pin free) Below 1 ohms 1 - Body ground Parking brake switch OFF (Switch pin pushed in) 10 kohms or higher NG --> REPLACE PARKING BRAKE SWITCH OK: Go to next step
  11. CHECK HARNESS AND CONNECTOR (PARKING BRAKE SWITCH TO COWL SIDE J/B RH ECU) Disconnect the cowl side J/B RH ECU connector and parking brake switch connector. Measure the resistance according to the value(s) in the table below. Resistance Tester Connection Specified Condition DL-10 - A31-1 Below 1 ohms DL-10 - Body ground 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  12. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU TO COWL SIDE J/B RH ECU) Disconnect the skid control ECU connector and cowl side J/B RH ECU connector. Measure the resistance according to the value(s) in the table below. Resistance Tester Connection Specified Condition A15-23 (PKB) - K67-18 (PKBO) Below 1 ohms A15-23 (PKB) - Body ground 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPLACE COWL SIDE J/B RH ECU

Note. When replace the skid control ECU, perform initialization of linear solenoid valve and calibration. Refer to INITIALIZATION .

Note. When replacing the skid control ECU, perform initialization of linear solenoid valve and calibration. Refer to INITIALIZATION .

Scheme 204

Scheme 204: PROCEDURE
Scheme 204: PROCEDURE

Scheme 205

Scheme 205
Scheme 205
  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 VSC OFF SWITCH OPERATION 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 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 --> 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)

Note. When replacing the skid control ECU, perform initialization of linear solenoid valve and calibration. Refer to INITIALIZATION .

Note. When replacing the skid control ECU, perform initialization of linear solenoid valve and calibration. Refer to INITIALIZATION .

Note. When replacing the skid control ECU, perform initialization of linear solenoid valve and calibration. Refer to INITIALIZATION .

Note. When replacing the skid control ECU, perform initialization of linear solenoid valve and calibration. Refer to CALIBRATION .

Note. When replacing the skid control ECU, perform initialization of linear solenoid valve and calibration. Refer to INITIALIZATION .

Note. When replacing the skid control ECU, perform initialization of linear solenoid valve and calibration. Refer to INITIALIZATION .

Note. When replacing the skid control ECU, perform initialization of linear solenoid valve and calibration. Refer to INITIALIZATION .

Note. When replacing the skid control ECU, perform initialization of linear solenoid valve and calibration. Refer to INITIALIZATION .

Scheme 206

Scheme 206: PROCEDURE
Scheme 206: PROCEDURE

Scheme 207

Scheme 207
Scheme 207

Scheme 208

Scheme 208
Scheme 208
  1. PERFORM ACTIVE TEST USING TECHSTREAM (SKID CONTROL BUZZER) Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream main switch on. Select the Active Test mode on the Techstream. CHECKING BUZZER SOUND ON/OFF Tester Display Test Part Control Range Diagnostic Note Buzzer Skid control buzzer Buzzer ON / OFF Buzzer can be heard Check that the buzzer sounds/stops when turning the skid control buzzer on/off by using the Techstream. Result Condition Proceed To Buzzer sounds/stops A Buzzer does not sound or sounds constantly B 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) . B --> See step 2 A --> END
  2. INSPECT SKID CONTROL BUZZER (POWER SOURCE TERMINAL) Disconnect the skid control buzzer connector. Turn the engine switch on (IG). Measure the voltage according to the value(s) in the table below. Voltage Tester Connection Condition Specified Condition K11-2 - Body ground Engine switch on (IG) 10 to 14 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT) OK: Go to next step
  3. INSPECT SKID CONTROL BUZZER Disconnect the skid control buzzer connector. Apply battery negative voltage to terminal 1, and battery positive voltage to terminal 2 of the skid control buzzer, and then check that the buzzer sounds. OK Skid control buzzer sounds. NG --> REPLACE SKID CONTROL BUZZER OK: Go to next step
  4. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU TO SKID CONTROL BUZZER) Disconnect the skid control ECU connector. Measure the resistance according to the value(s) in the table below. Resistance Tester Connection Specified Condition A13-6 (BZ) - K11-1 Below 1 ohms A13-6 (BZ) - Body ground 10 kohms or higher A13-22 (VBZ) - K11-2 Below 1 ohms A13-22 (VBZ) - Body ground 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  5. INSPECT SKID CONTROL ECU (GND TERMINAL) Disconnect the skid control ECU (A13, A15) connectors. Measure the resistance according to the value(s) in the table below. Resistance Tester Connection Specified Condition A13-1 (GND) - Body ground Below 1 ohms A15-1 (GND4) - Body ground Below 1 ohms 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 --> REPAIR OR REPLACE HARNESS OR CONNECTOR (GND CIRCUIT) OK --> REPLACE SKID CONTROL ECU

Note. When replacing the skid control ECU, perform initialization of linear solenoid valve calibration. Refer to INITIALIZATION .

Scheme 209

Scheme 209: PROCEDURE
Scheme 209: PROCEDURE

Scheme 210

Scheme 210
Scheme 210

Scheme 211

Scheme 211
Scheme 211
  1. INSPECT DLC3 (TC AND CG TERMINAL) Turn the engine switch on (IG). Measure the voltage according to the value(s) in the table below. Voltage Tester Connection Condition Specified Condition K16-13 (TC) - Body ground Engine switch on (IG) 10 to 14 V Measure the resistance according to the value(s) in the table below. Resistance Tester Connection Specified Condition K16-4 (CG) - Body ground Below 1 ohms NG --> See step 3 OK: Go to next step
  2. CHECK CAN COMMUNICATION SYSTEM Check if the CAN communication 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 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) . B --> REPAIR CAN COMMUNICATION SYSTEM A: Go to next step
  3. CHECK HARNESS AND CONNECTOR (DLC3 (TC) TO ECM) Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Resistance Tester Connection Specified Condition K16-13 (TC) - A7-21 (TC) Below 1 ohms Measure the resistance according to the value(s) in the table below. Resistance Tester Connection Specified Condition K16-13 (TC) - Body ground 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  4. CHECK HARNESS AND CONNECTOR (DLC3 (CG) TO BODY GROUND) Measure the resistance according to the value(s) in the table below. Resistance Tester Connection Specified Condition K16-4 (CG) - Body ground Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  5. CHECK ECM (DLC3 (TC) INPUT) Using SST, connect terminals TC and CG of the DLC3. SST: 09843-18040 Check if the MIL is blinking. Result Condition Proceed To MIL is blinking A MIL is not blinking B B --> REPAIR OR REPLACE HARNESS OR CONNECTOR (ECM (TC) CIRCUIT) A: Go to next step
  6. CHECK CAN COMMUNICATION SYSTEM Check if the CAN communication 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 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) . B --> REPAIR CAN COMMUNICATION SYSTEM A --> REPLACE SKID CONTROL ECU

Note. When replacing the skid control ECU, perform initialization of linear solenoid valve calibration. Refer to INITIALIZATION .

Scheme 212

Scheme 212: PROCEDURE
Scheme 212: PROCEDURE

Scheme 213

Scheme 213
Scheme 213
  1. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU TO DLC3 (TS)) Turn the engine switch off. Disconnect the skid control ECU connector. Measure the resistance according to the value(s) in the table below. Resistance Tester Connection Specified Condition A13-25 (TS) - K16-12 (TS) Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  2. CHECK HARNESS AND CONNECTOR (DLC3 (CG) TO BODY GROUND) Measure the resistance according to the value(s) in the table below. Resistance Tester Connection Specified Condition K16-4 (CG) - Body ground Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  3. CHECK HARNESS AND CONNECTOR (DLC3 (TS) TO BODY GROUND) Measure the resistance according to the value(s) in the table below. Resistance Tester Connection Specified Condition K16-12 (TS) - Body ground 10 kohms or higher 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 --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPLACE SKID CONTROL ECU

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