Nissan Juke Service and Repair Manual : P0402 EGR volume control valve

DTC Logic

DTC DETECTION LOGIC

Diagnosis Procedure


Diagnosis Procedure

1.CHECK GROUND CONNECTIONS

1. Turn ignition switch OFF.

2. Check ground connection E38. Refer to Ground inspection in GI-44, "Circuit Inspection".

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

NO >> Repair or replace ground connection.

2.CHECK EGR VOLUME CONTROL VALVE INSTALLATION

Check that EGR volume control valve is installed properly.

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

NO >> Install EGR volume control valve properly.

3.CHECK EGR VOLUME CONTROL VALVE CONTROL MOTOR CIRCUIT

1. Check harness continuity between the following terminals.

2. Also check harness for short to ground and short to power.


2. Also check harness for short to ground and short to power.

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

NO >> Repair open circuit or short to ground or short to power in harness or connectors.

4.CHECK EGR VOLUME CONTROL VALVE VISUALLY

1. Remove the EGR volume control valve 2. Check if foreign matter is caught between the EGR volume control valve and the housing.

Is the inspection result normal? YES >> GO TO 5.

NO >> Remove the foreign matter and clean the EGR volume control valve.

5.CHECK EGR PASSAGE

Check the following for clogging and cracks.

EGR tube
EGR hose
EGR cooler
Is the inspection result normal?

YES >> GO TO 6.

NO >> Repair or replace EGR passage.

6.CHECK EGR VOLUME CONTROL VALVE

Refer to EC-939, "Component Inspection".

Is the inspection result normal? YES >> GO TO 7.

NO >> GO TO 8.

7.CHECK INTERMITTENT INCIDENT

Refer to GI-42, "Intermittent Incident", ???INCIDENT SIMULATION TESTS??? and ???GROUND INSPECTION???.

Is the inspection result normal? YES >> GO TO 8.

NO >> Repair or replace.

8.REPLACE EGR VOLUME CONTROL VALVE

1. Replace the EGR volume control valve.

2. Perform EC-881, "Work Procedure" >> INSPECTIO END

Component Inspection

1.CHECK EGR VOLUME CONTROL VALVE CONTROL MOTOR

1. Turn ignition switch OFF.

2. Disconnect EGR volume control valve harness connector.

3. Check resistance between EGR volume control valve terminals as follows.

Is the inspection result normal?


Is the inspection result normal? YES >> INSPECTION END

NO >> GO TO 2.

2.REPLACE EGR VOLUME CONTROL VALVE

1. Replace the EGR volume control valve.

2. Perform EC-881, "Work Procedure" >> INSPECTIO END

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