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

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? 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.

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