B26F9

B26F9 CRANKING REQUEST CIRCUIT





DTC Logic

DTC DETECTION LOGIC

NOTE:
- DTC B26F9 can be detected even though the related circuit is not used in this vehicle.
- If DTC B26F9 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Body Control System.
- If DTC B26F9 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. 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-III.
Is DTC detected?
YES - Go to SEE 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. Service and Repair.
2. Perform initialization of BCM and registration of all Intelligent Keys using CONSULT-III.
For initialization and registration procedures, refer to CONSULT-III Operation Manual NATS-IVIS/NVIS.
3. Perform DTC CONFIRMATION PROCEDURE for DTC B26F9. SEE DTC Logic.
Is DTC detected?
YES - GO TO 4.
NO - INSPECTION END
4.REPLACE ECM
1. Replace ECM. Service and Repair.
2. Perform "ADDITIONAL SERVICE WHEN REPLACING ECM". Work Procedure.
- INSPECTION END