Nissan Juke Service and Repair Manual : B20A0 cranking request circuit

DTC Logic

DTC DETECTION LOGIC

NOTE

:
If DTC B20A0 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to PCS- 30, "DTC Logic".

DTC CONFIRMATION PROCEDURE


DTC CONFIRMATION PROCEDURE

1.PERFORM DTC CONFIRMATION PROCEDURE

1. Perform DTC CONFIRMATION PROCEDURE for DTC P1650. Refer to EC-366, "DTC Logic" (MR16DDT) or EC-725, "DTC Logic" (HR16DE).

2. Turn ignition switch ON.

3. Check DTC in “Self Diagnostic Result” mode of “IPDM E/R” using CONSULT-III.

Is DTC detected? YES >> Refer to SEC-136, "Diagnosis Procedure".

NO >> INSPECTION END

Diagnosis Procedure

1.CHECK CRANKING REQUEST SIGNAL

1. Turn ignition switch ON.

2. Check voltage between IPDM E/R harness connector and ground under the following conditions.

Is the inspection result normal?


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

NO >> GO TO 2.

2.CHECK CRANKING REQUEST SIGNAL CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect IPDM E/R connector.

3. Disconnect ECM connector.

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

5. Check continuity between BCM harness connector and ground.


5. Check continuity between BCM harness connector and ground.

Is the inspection result normal?


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

NO >> Repair or replace harness.

3.REPLACE IPDM E/R

1. Replace IPDM E/R. Refer to PCS-34, "Removal and Installation".

2. Perform DTC CONFIRMATION PROCEDURE for DTC B20A0. Refer to SEC-136, "DTC Logic".

Is DTC detected? YES >> GO TO 4.

NO >> INSPECTION END

4.REPLACE ECM

Replace ECM.

Refer to EC-447, "Removal and Installation" (MR16DDT) or EC-805, "Removal and Installation" (HR16DE).

>> INSPECTION END

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