Nissan Rogue Service Manual: C1198 vacuum sensor

Nissan Rogue Service Manual / Brakes / Brake Control System / DTC/circuit diagnosis / C1198 vacuum sensor

DTC Logic

DTC DETECTION LOGIC

DTC	Display Item	Malfunction detected condition	Possible causes
C1198	VACUUM SEN CIR	When an open circuit is detected in vacuum sensor circuit. When a short circuit is detected in vacuum sensor circuit. When a malfunction is detected in vacuum sensor noise.	Harness or connector Vacuum sensor (brake booster) ABS actuator and electric unit (control unit)

DTC CONFIRMATION PROCEDURE

1.CHECK SELF-DIAGNOSTIC RESULT

With CONSULT.

Turn the ignition switch ON.
Perform self-diagnostic result.

Is DTC C1198 detected? YES >> Proceed to diagnosis procedure. Refer to BRC-107, "Diagnosis Procedure".

NO >> Inspection End.

Diagnosis Procedure

Regarding Wiring Diagram information, refer to BRC-57, "Wiring Diagram".

1.CHECK VACUUM SENSOR CIRCUIT

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

Check vacuum sensor circuit

Check continuity between vacuum sensor harness connector and ground.

Check vacuum sensor circuit

Is the inspection result normal? YES >> GO TO 2.

NO >> Repair or replace malfunctioning components.

2.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 >> GO TO 3.

NO >> Repair or replace malfunctioning components.

3.REPLACE VACUUM SENSOR

With CONSULT

Connect ABS actuator and electric unit (control unit) harness connector.
Replace vacuum sensor. Refer to BR-30, "Exploded View".
CAUTION: Always replace brake booster because vacuum sensor cannot be disassembled.
Erase self-diagnosis result for “ABS”.
Turn the ignition switch OFF.
Start engine.
Perform self-diagnosis for “ABS”.

Is DTC “C1198” detected? YES >> Replace ABS actuator and electric unit (control unit). Refer to BRC-136, "Removal and Installation".

NO >> Inspection End.

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