Power Distribution System

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 the CAN communication line. IPDM E/R transmits the power supply position status via CAN communication line to BCM.




DTC Logic

DTC DETECTION LOGIC

DTC Detection Logic:

DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Press the push-button ignition switch under the following conditions, and wait for at least 1 second.
- Selector lever is in the P or N position.
- Do not depress brake pedal.
2. Check "Self diagnostic result" with CONSULT-III.
Is DTC detected?
YES - Go to Power Distribution System.
NO - INSPECTION END




Diagnosis Procedure
1.CHECK PUSH-BUTTON IGNITION SWITCH OPERATION
Press push-button ignition switch and check if it turns ON.
Does ignition switch turn ON?
YES - GO TO 2.
NO - GO TO 4.
2.CHECK IGNITION SWITCH OUTPUT SIGNAL (IPDM E/R)
1. Disconnect push-button ignition switch connector and BCM connector.
2. Check voltage between IPDM E/R harness connector and ground.





Is the inspection result normal?
YES - GO TO 3.
NO - Replace IPDM E/R. Refer to Removal and Installation.
3.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 IPDM E/R harness connector and ground.





Is the inspection result normal?
YES - GO TO 6.
NO - Repair or replace harness.
4.CHECK IGNITION SWITCH OUTPUT SIGNAL (BCM)
1. Connect BCM connector.
2. Check voltage between BCM harness connector and ground.





Is the inspection result normal?
YES - GO TO 5.
NO - Replace BCM. Refer to Removal and Installation.
5.CHECK PUSH-BUTTON IGNITION SWITCH CIRCUIT (BCM)
1. Disconnect BCM connector and IPDM E/R connector.
2. Check continuity between BCM harness connector and push-button ignition switch harness connector.





3. Check continuity between BCM harness connector and ground.





Is the inspection result normal?
YES - GO TO 6.
NO - Repair or replace harness.
6.CHECK INTERMITTENT INCIDENT
Refer to Intermittent Incident.
- INSPECTION END