Nissan Rogue Service Manual: P0778 pressure control solenoid B

DTC Description

DTC DETECTION LOGIC

POSSIBLE CAUSE

•  Harness or connector (Secondary pressure solenoid valve circuit is shorted to ground)
•  Secondary pressure solenoid valve

FAIL-SAFE

•  Selector shock is large
•  Start is slow
•  Acceleration is slow
•  Lock-up is not performed

DTC CONFIRMATION PROCEDURE

CAUTION: Always drive vehicle at a safe speed.

1.PREPARATION BEFORE WORK

If another “DTC CONFIRMATION PROCEDURE” occurs just before, turn ignition switch OFF and wait for at least 10 seconds, then perform the next test.

>> GO TO 2.

2.CHECK DTC DETECTION

1. Start the engine and wait for 5 seconds or more.
2.  Check the first trip DTC.

Is “P0778” detected? YES >> Go to TM-141, "Diagnosis Procedure".

NO-1 >> To check malfunction symptom before repair: Refer to GI-41, "Intermittent Incident".

NO-2 >> Confirmation after repair: INSPECTION END

Diagnosis Procedure

1.CHECK CIRCUIT BETWEEN TCM AND CVT UNIT

1.  Turn ignition switch OFF.
2.  Disconnect TCM connector and CVT unit connector.
3.  Check continuity between TCM harness connector terminal and ground.

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

NO >> Repair or replace damaged parts.

2.CHECK CIRCUIT BETWEEN CVT UNIT AND GROUND

Check continuity between CVT unit harness connector terminal and ground.

Is the inspection result normal? YES >> INSPECTION END

NO >> There is malfunction of secondary pressure solenoid valve. Replace transaxle assembly. Refer to TM-220, "Removal and Installation".