C1142

C1142 PRESS SENSOR





Description
The front and rear pressure sensors convert the brake fluid pressure to an electric signal and transmit it to the
ABS actuator and electric unit (control unit).




DTC Logic

DTC DETECTION LOGIC

DTC Detection Logic:

DTC CONFIRMATION PROCEDURE
1.CHECK SELF-DIAGNOSIS RESULTS
Check the self-diagnosis results.





Is above displayed on the self-diagnosis display?
YES - Proceed to diagnosis procedure. Refer to C1142.
NO - Inspection End




Diagnosis Procedure
FRONT PRESSURE SENSOR INSPECTION PROCEDURE
1.CONNECTOR INSPECTION
1. Turn the ignition switch OFF.
2. Disconnect the front pressure sensor connector E31 and ABS actuator and electric unit (control unit) connector E125 and inspect the terminals for deformation, disconnection, looseness, or damage.
Is the inspection result normal?
YES - GO TO 2
NO - Repair connector.
2.FRONT PRESSURE SENSOR CIRCUIT INSPECTION





1. Measure the continuity between the ABS actuator and electric unit (control unit) harness connector E125 (A) and front pressure sensor harness connector E31 (B).





2. Measure the continuity between the ABS actuator and electric unit (control unit) harness connector E125
(A) and body ground.





Is the inspection result normal?
YES - GO TO 3
NO - Repair or replace harness or connector.
3.FRONT PRESSURE SENSOR INSPECTION
1. Reconnect the front pressure sensor and ABS actuator and electric unit (control unit) connectors.
2. Use "DATA MONITOR" to check if the status of "PRESS SENSOR" is normal.





Is the inspection result normal?
YES - Inspection End.
NO - Replace the front pressure sensor.
REAR PRESSURE SENSOR INSPECTION PROCEDURE
1.CONNECTOR INSPECTION
1. Turn the ignition switch OFF.
2. Disconnect the rear pressure sensor connector E32 and ABS actuator and electric unit (control unit) connector E125 and inspect the terminals for deformation, disconnection, looseness, or damage.
Is the inspection result normal?
YES - GO TO 2
NO - Repair connector.
2.REAR PRESSURE SENSOR CIRCUIT INSPECTION





1. Measure the continuity between the ABS actuator and electric unit (control unit) harness connector E125 (A) and rear pressure sensor harness connector E32 (B).





2. Measure the continuity between the ABS actuator and electric unit (control unit) harness connector E125
(A) and body ground.





Is the inspection result normal?
YES - GO TO 3
NO - Repair or replace harness or connector.
3.REAR PRESSURE SENSOR INSPECTION
1. Reconnect the rear pressure sensor and ABS actuator and electric unit (control unit) connectors.
2. Use "DATA MONITOR" to check if the status of "PRESS SEN2" is normal.





Is the inspection result normal?
YES - Inspection End.
NO - Replace the rear pressure sensor.




Component Inspection
1.CHECK DATA MONITOR
On "DATA MONITOR", select "PRESS SENSOR" and "PRESS SEN2" and check the brake fluid pressure.





Is the inspection result normal?
YES - Inspection End
NO - Go to diagnosis procedure. Refer to C1142.




Special Repair Requirement
1.ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION
Always perform neutral position adjustment for the steering angle sensor when replacing the ABS actuator and electric unit (control unit). Refer to Description Special Repair Requirement Description Special Repair Requirement, "ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL
POSITION : Description".
>> GO TO 2
2.CALIBRATION OF DECEL G SENSOR
Always perform calibration of decel G sensor when replacing the ABS actuator and electric unit (control unit). Refer to Description.
>> END