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 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. C1142.
NO - Inspection End




Diagnosis Procedure
Regarding Wiring Diagram information, Electrical Diagrams.
FRONT PRESSURE SENSOR
1.CONNECTOR INSPECTION
1. Turn the ignition switch OFF.
2. Disconnect the front pressure sensor connector and ABS actuator and electric unit (control unit) connector 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) connector E125 (A) and front pressure sensor connector E31 (B).





2. Measure the continuity between the ABS actuator and electric unit (control unit) 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. Connect the front pressure sensor and ABS actuator and electric unit (control unit) connectors.
2. Perform the front pressure sensor component inspection. C1142.
Is the inspection result normal?
YES - Inspection End.
NO - Replace the front pressure sensor.
REAR PRESSURE SENSOR
1.CONNECTOR INSPECTION
1. Turn the ignition switch OFF.
2. Disconnect the rear pressure sensor connector and ABS actuator and electric unit (control unit) connector 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) connector E125 (A) and rear pressure sensor connector E32 (B).





2. Measure the continuity between the ABS actuator and electric unit (control unit) 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. Connect the rear pressure sensor and ABS actuator and electric unit (control unit) connectors.
2. Perform the rear pressure sensor component inspection. C1142.
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" or "PRESS SEN2" and check the brake fluid pressure.





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