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 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.
- CVT selector lever is in the P or N position.
- Release the brake pedal.
2. Check "Self diagnostic result" with CONSULT-III.
Is DTC detected?
YES >> Go to Diagnosis Procedure.
NO >> Inspection End.




Diagnosis Procedure
1. CHECK PUSH-BUTTON IGNITION SWITCH OPERATION
Press push-button ignition switch and check if it turns to ON.
Does ignition switch turn to ON?
YES >> GO TO 2
NO >> GO TO 4
2. CHECK IGNITION SWITCH OUTPUT SIGNAL (IPDM E/R)





1. Disconnect push-button ignition switch.
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 Service and Repair.
3. CHECK PUSH-BUTTON IGNITION SWITCH CIRCUIT (IPDM E/R)





1. Disconnect IPDM E/R and BCM.
2. Check continuity between IPDM E/R harness connector (A) and push-button ignition switch harness connector (B).










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. Disconnect push-button ignition switch.
2. Check voltage between BCM harness connector and ground.





Is the Inspection result normal?
YES >> GO TO 5
NO >> Replace BCM. Refer to Service and Repair.
5. CHECK PUSH-BUTTON IGNITION SWITCH CIRCUIT (BCM)





1. Disconnect BCM and IPDM E/R.
2. Check continuity between BCM harness connector (A) and push-button ignition switch harness connector (B).










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.