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 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.
Is DTC detected?
YES- Go to "Diagnosis Procedure".
NO- Inspection End.


Diagnosis Procedure

Regarding Wiring Diagram information, Power Distribution System Coupe or Power Distribution System 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. 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. 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 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

Intermittent Incident.
- Inspection End.