B26FA

B26FA CRANKING REQUEST CIRCUIT

DTC Logic


DTC DETECTION LOGIC

NOTE:
- DTC B26FA can be detected even though the related circuit is not used in this vehicle.
- If DTC B26FA is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to
"DTC Logic" Body Control System.
- If DTC B26FA is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer to
"DTC Logic" Body Control System.






DTC CONFIRMATION PROCEDURE


1. PERFORM DTC CONFIRMATION

1.Start engine and wait 2 seconds or more at idle speed.
2.Drive vehicle for 2 seconds or more.
3.Check DTC in "Self Diagnostic Result" mode of "BCM" using CONSULT.
Is DTC detected?
YES- Go to "Diagnosis Procedure" .
NO- INSPECTION END


Diagnosis Procedure


1. CHECK CRANKING REQUEST SIGNAL

1.Turn ignition switch ON.
2.Check voltage between BCM 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 BCM connector.
3.Disconnect ECM connector.
4.Check continuity between BCM 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 BCM

1.Replace BCM. Refer to "Removal and Installation" Service and Repair.
2.Perform initialization of BCM and registration of all Intelligent Keys using CONSULT.
3.Perform DTC CONFIRMATION PROCEDURE for DTC B26FA. 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