C1179

C1179 ABS DELTA S SEN NG





Description
The active brake booster consists of a vacuum booster, an active booster control group and a delta stroke sensor. If a brake booster system malfunction occurs due to loss of vacuum, the delta stroke sensor will signal the ABS actuator and electric unit (control unit) that a booster malfunction has occurred. The active booster then applies supplemental force to the master cylinder relative to the amount of force exerted on the brake pedal.




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. C1179.
NO - Inspection End




Diagnosis Procedure
Regarding Wiring Diagram information, Electrical Diagrams.
1.CONNECTOR INSPECTION
1. Turn the ignition switch OFF.
2. Disconnect the delta stroke 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.DELTA STROKE SENSOR CIRCUIT INSPECTION





1. Measure the continuity between ABS actuator and electric unit
(control unit) connector E125 (A) and delta stroke sensor connector E114 (B).





2. Measure the continuity between 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.DELTA STROKE SENSOR INSPECTION
1. Connect the delta stroke sensor and ABS actuator and electric unit (control unit) connectors.
2. Perform the delta stroke sensor component inspection. C1179.
Is the inspection result normal?
YES - Replace the ABS actuator and electric unit (control unit). Service and Repair.
NO - Replace the delta stroke sensor.




Component Inspection
1.CHECK DATA MONITOR
Use "DATA MONITOR" to check if the status of "DELTA S SEN" is normal.





Is the inspection result normal?
YES - Inspection End
NO - Go to diagnosis procedure. C1179.




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). 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). Description.
- END