C1198

C1198 VACUUM SENSOR

DTC Logic


DTC DETECTION LOGIC







DTC CONFIRMATION PROCEDURE


1. CHECK SELF-DIAGNOSTIC RESULT

With CONSULT.
1.Turn the ignition switch ON.
2.Perform self-diagnostic result.
Is DTC C1198 detected?
YES- Proceed to diagnosis procedure. Refer to "Diagnosis Procedure" .
NO- Inspection End.


Diagnosis Procedure

Regarding Wiring Diagram information, refer to "Wiring Diagram" [1][2]Antilock Brakes / Traction Control Systems.

1. CHECK VACUUM SENSOR CIRCUIT

1.Turn the ignition switch OFF.
2.Disconnect vacuum sensor harness connector.
3.Disconnect ABS actuator and electric unit (control unit) harness connector.
4.Check continuity between vacuum sensor harness connector and ABS actuator and electric unit (control unit) harness connector.





5.Check continuity between vacuum sensor harness connector and ground.





Is the inspection result normal?
YES- GO TO 2.
NO- Repair or replace malfunctioning components.

2. CHECK TERMINAL

Revision: March 20122013 Infiniti JX
- Check vacuum sensor pin terminals for damage or loose connection with harness connector.
- Check ABS actuator and electric unit (control unit) pin terminals for damage or loose connection with harness connector.
Is the inspection result normal?
YES- GO TO 3.
NO- Repair or replace malfunctioning components.

3. REPLACE VACUUM SENSOR

With CONSULT
1.Connect ABS actuator and electric unit (control unit) harness connector.
2.Replace vacuum sensor. Refer to "Removal and installation" Removal and Installation.

CAUTION:
Always replace brake booster because vacuum sensor cannot be disassembled.
3.Erase self-diagnosis result for "ABS".
4.Turn the ignition switch OFF.
5.Start engine.
6.Perform self-diagnosis for "ABS".
Is DTC "C1198" detected?
YES- Replace ABS actuator and electric unit (control unit). Refer to "Removal and Installation" Removal and Installation.
NO- Inspection End.
Revision: March 20122013 Infiniti JX