Nissan Juke Service and Repair Manual : P0778 pressure control solenoid B

DTC Logic

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE


DTC CONFIRMATION PROCEDURE

NOTE

:
If “DTC CONFIRMATION PROCEDURE” has been previously performed, always turn ignition switch OFF and wait at least 10 seconds before performing the next test.

After the repair, perform the following procedure to confirm the malfunction is eliminated.

1.CHECK DTC DETECTION

1. Turn ignition switch ON.With CONSULT-III


1. Turn ignition switch ON.

2. Start engine.

3. Drive vehicle and maintain the following conditions for at least 5 consecutive seconds.

4. Select “Self Diagnostic Results” in “TRANSMISSION”.

Follow the procedure “With CONSULT-III”.With GST


Follow the procedure “With CONSULT-III”.

Is “P0778” detected? YES >> Go to TM-225, "Diagnosis Procedure".

NO >> Check intermittent incident. Refer to GI-42, "Intermittent Incident".

Diagnosis Procedure

1.CHECK SECONDARY PRESSURE SOLENOID VALVE CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect TCM connector.

3. Check resistance between TCM connector terminal and ground.

Is the inspection result normal?


Is the inspection result normal? YES >> GO TO 4.

NO >> GO TO 2.

2.CHECK SECONDARY PRESSURE SOLENOID VALVE

Check secondary pressure solenoid valve. Refer to TM-226, "Component Inspection".

Is the inspection result normal? YES >> GO TO 3.

NO >> Repair or replace damaged parts.

3.CHECK HARNESS BETWEEN TCM AND SECONDARY PRESSURE SOLENOID VALVE

1. Turn ignition switch OFF.

2. Disconnect TCM connector and CVT unit harness connector.

3. Check continuity between TCM connector terminal and CVT unit harness connector terminal.

4. If OK, check harness for short to ground and short to power.


4. If OK, check harness for short to ground and short to power.

5. Reinstall any part removed.

Is the inspection result normal? YES >> GO TO 4.

NO >> Repair or replace damaged parts.

4.CHECK TCM

Check TCM input/output signals. Refer to TM-164, "Reference Value".

Is the inspection result normal? YES >> Check intermittent incident. Refer to GI-42, "Intermittent Incident".

NO >> Replace the TCM. Refer to TM-280, "Removal and Installation".

Component Inspection

SECONDARY PRESSURE SOLENOID VALVE

1.SECONDARY PRESSURE SOLENOID VALVE

1. Turn ignition switch OFF.

2. Disconnect CVT unit harness connector.

3. Check resistance between CVT unit harness connector terminal and ground.

Is the inspection result normal?


Is the inspection result normal? YES >> INSPECTION END

NO >> Replace the transaxle assembly. Refer to TM-301, "Removal and Installation".

    P0776 pressure control solenoid B
    Description The secondary pressure solenoid valve regulates the secondary pressure to suit the driving condition in response to a signal sent from the TCM. DTC Logic DTC DETECTION LOGIC DTC C ...

    P0826 up and down shift SW
    DTC Logic DTC DETECTION LOGIC DTC CONFIRMATION PROCEDURE CAUTION: Always drive vehicle at a safe speed. NOTE: If “DTC CONFIRMATION PROCEDURE” has been previously conducted, always turn ignit ...

    Other materials:

    P0090 fuel pump
    DTC Logic DTC DETECTION LOGIC Diagnosis Procedure 1.CHECK HIGH PRESSURE SUPPLY PUMP (PRESSURE CONTROL VALVE) POWER SUPPLY 1. Turn ignition switch OFF. 2. Disconnect high pressure supply pump (pressure control valve) harness connector. 3. Turn ignition switch ON. 4. Check the voltage betwe ...

    Push-button ignition switch
    Component Function Check 1.CHECK FUNCTION 1. Select “PUSH SW” in “Data Monitor” mode with CONSULT-III. 2. Check the push-button ignition switch signal under the following conditions. Is the indication normal? YES >> INSPECTION END. NO >> Go to PCS-108, "Diagnosis Procedure&q ...

    Multi display unit
    Reference Value VALUES ON THE DIAGNOSIS TOOL • *1:MR16DDT • *2: This is not used to determine ON/OFF of the indicator lamp. TERMINAL LAYOUT PHYSICAL VALUES DTC Inspection Priority Chart When multiple DTCs are displayed simultaneously, check one by one according to the following prio ...