B261A

B261A PUSH-BUTTON IGNITION SWITCH





Description
BCM transmits the change in the power supply position with the push-button ignition switch to IPDM E/R via
CAN communication line. IPDM E/R transmits the power supply position status via CAN communication line to BCM.




DTC Logic

DTC DETECTION LOGIC

NOTE:
- If DTC B261A is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Body Control System With Intelligent Key System.
- If DTC B261A is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Body Control System With Intelligent Key System.






DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Press the push-button ignition switch under the following conditions, and wait for 1 second or more.
- Selector lever is in the P or N position
- Do not depress brake pedal
2. Check "Self-diagnosis result" of BCM with CONSULT-III.
Is DTC detected?
YES - Go to SEE Diagnosis Procedure.
NO - INSPECTION END




Diagnosis Procedure
1.CHECK IGNITION SWITCH OUTPUT SIGNAL (PUSH-BUTTON IGNITION SWITCH)
1. Disconnect push-button ignition switch connector and IPDM E/R connector.
2. Check voltage between push-button ignition switch harness connector and ground.






Is the inspection result normal?
YES - GO TO 3.
NO - GO TO 2.
2.CHECK PUSH-BUTTON IGNITION SWITCH CIRCUIT (BCM)
1. Disconnect BCM connector.
2. Check continuity between BCM harness connector and push-button ignition switch harness connector.






3. Check continuity between push-button ignition switch harness connector and ground.





Is the inspection result normal?
YES - Replace BCM. Removal And Installation.
NO - Repair or replace harness.
3.CHECK IGNITION SWITCH OUTPUT SIGNAL (IPDM E/R)
Check voltage between IPDM E/R harness connector and ground.






Is the inspection result normal?
YES - Replace IPDM E/R. Removal And Installation With I-Key.
NO - GO TO 4.
4.CHECK PUSH-BUTTON IGNITION SWITCH CIRCUIT (IPDM E/R)
1. Disconnect IPDM E/R connector.
2. Check continuity between IPDM E/R harness connector and push-button ignition switch harness connector.






3. Check continuity between push-button ignition switch harness connector and ground.





Is the inspection result normal?
YES - GO TO 5.
NO - Repair or replace harness.
5.CHECK INTERMITTENT INCIDENT
Intermittent Incident.
- INSPECTION END