Nissan Juke Service and Repair Manual : P1820 engine speed signal

DTC Logic

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE


DTC CONFIRMATION PROCEDURE

1.PRECONDITIONING

If DTC CONFIRMATION PROCEDURE has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test.

>> GO TO 2.

2.DTC REPRODUCTION PROCEDURE

1. Start the engine and drive at 20 km/h (12 MPH) or more.With CONSULT-III


1. Start the engine and drive at 20 km/h (12 MPH) or more.

2. Perform self-diagnosis for ALL MODE AWD/4WD.

Is DTC P1820 detected? YES >> Proceed to diagnosis procedure. Refer to DLN-52, "Diagnosis Procedure".

NO >> INSPECTION END

Diagnosis Procedure

1.PERFORM ECM SELF-DIAGNOSIS

Perform self-diagnosis for ENGINE.With CONSULT-III


Perform self-diagnosis for ENGINE.

Is any DTCs detected? YES >> Check the DTCs. Refer to EC-108, "DTC Index".

NO >> GO TO 2.

2.ERASE SELF-DIAGNOSTIC RESULT

1. Erase self-diagnostic results for ALL MODE AWD/4WD.With CONSULT-III


1. Erase self-diagnostic results for ALL MODE AWD/4WD.

2. Turn the ignition switch OFF.

3. Start the engine and drive vehicle for a while.

4. Check that malfunction indicator lamp (MIL) turns OFF.

Does malfunction indicator lamp (MIL) turn OFF? YES >> GO TO 3.

NO >> Refer to EC-436, "Diagnosis Procedure".

3.CHECK TERMINALS AND HARNESS CONNECTORS

Check 4WD control module pin terminals for damage or loose connection with harness connector.

Is inspection result normal? YES >> After turning the ignition switch OFF, perform DTC confirmation procedure again. When DTC P1820 is detected, Replace 4WD control module. Refer to DLN-91, "Removal and Installation".

NO >> Repair or replace error-detected parts.

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