B20A0

B20A0 CRANKING REQUEST CIRCUIT

DTC Logic


DTC DETECTION LOGIC

NOTE:
- DTC B20A0 can be detected although the related circuit is not used in this vehicle.
- If DTC B20A0 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to
"DTC Logic" IPDM E/R.






1. PERFORM DTC CONFIRMATION PROCEDURE

1.Start engine and wait 1 second or more at idle speed.
2.Drive vehicle for 1 second or more.
3.Check DTC in "Self Diagnostic Result" mode of "IPDM E/R" using CONSULT.
Is DTC detected?
YES- Refer to "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 "Removal and Installation" Service and Repair.
2.Perform DTC CONFIRMATION PROCEDURE for DTC B20A0. Refer to "DTC Logic" .
Is DTC detected?
YES- GO TO 4.
NO- INSPECTION END

4. REPLACE ECM

1.Replace ECM. Refer to "Removal and Installation" For USA and Canada.
2.Perform "ADDITIONAL SERVICE WHEN REPLACING ECM". Refer to "Work Procedure" For USA and Canada.
- INSPECTION END