PCS

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 PCS.
NO - Inspection End.




Diagnosis Procedure
Regarding Wiring Diagram information, refer to Coupe (coupe) or Sedan (sedan).
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 BCM.
5. CHECK PUSH-BUTTON IGNITION SWITCH CIRCUIT (BCM)
1. Disconnect BCM and IPDM E/R.
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.