Nissan Juke Service and Repair Manual : P0657 ECM relay

DTC Logic

DTC DETECTION LOGIC

NOTE:


NOTE

:
When IPDM E/R DTC is indicated with DTC P0657, IPDM E/R DTC must be checked first.

Diagnosis Procedure

1

.CHECK GROUND CONNECTION

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 ECM RELAY CIRCUIT-I

Check the voltage between ECM harness connector and ground.

Is the inspection result normal?


Is the inspection result normal? YES >> GO TO 6.

NO >> GO TO 3.

3.CHECK ECM RELAY CIRCUIT-II

1. Disconnect ECM harness connector F57.

2. Disconnect IPDM E/R harness connector E14.

3. Check the continuity between ECM harness connector and IPDM E/R harness connector.

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


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

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

NO >> GO TO 4.

4.DETECT MALFUNCTIONING PART

Check the following.

Х Harness or connectors E8, F1 Х Harness for open or short between ECM and IPDM E/R

>> Repair open circuit or short to ground or short to power in harness or connectors.

5.CHECK 20A FUSE

1. Disconnect 20A fuse (No. 43) from IPDM E/R.

2. Check 20A fuse.

Is the inspection result normal? YES >> GO TO 6.

NO >> Replace 20A fuse.

6.CHECK INTERMITTENT INCIDENT

Refer to GI-42, "Intermittent Incident".

>> INSPECTION END

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