C119A

C119A 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 C119A 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 POWER SUPPLY

1.Turn the ignition switch OFF.
2.Disconnect vacuum sensor harness connector.
3.Check voltage between vacuum sensor harness connector and ground.





4.Turn the ignition switch ON.

CAUTION:
Never start engine.
5.Check voltage between vacuum sensor harness connector and ground.





Is the inspection result normal?
YES- GO TO 3.
NO- GO TO 2.

2. CHECK VACUUM SENSOR POWER SUPPLY CIRCUIT

1.Turn the ignition switch OFF.
2.Disconnect ABS actuator and electric unit (control unit) harness connector.
3.Check continuity between vacuum sensor harness connector and ABS actuator and electric unit (control unit) harness connector.
Revision: March 20122013 Infiniti JX





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





Is the inspection result normal?
YES- Perform diagnosis of ABS actuator and electric unit (control unit) power supply and ground circuit.
Refer to "Diagnosis Procedure" C1109.
NO- Repair or replace malfunctioning components.

3. CHECK VACUUM SENSOR GROUND CIRCUIT

1.Turn the ignition switch OFF.
2.Check continuity between vacuum sensor harness connector and ground.





Is the inspection result normal?
YES- GO TO 4.
NO- Repair or replace malfunctioning components.

4. CHECK TERMINAL

- 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- Replace ABS actuator and electric unit (control unit). Refer to "Removal and Installation" Removal and Installation.
NO- Repair or replace malfunctioning components.
Revision: March 20122013 Infiniti JX