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


DTC Logic


DTC DETECTION LOGIC

NOTE:
- If DTC B261A is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to
Security System.
- If DTC B261A is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer to
Security System.






DTC CONFIRMATION PROCEDURE


1. PERFORM DTC CONFIRMATION PROCEDURE 1

1.Press push-button ignition switch for 1 second under the following condition.
-Selector lever is in the P or N position.
-Do not depress brake pedal.
2.Check "Self diagnostic result" with CONSULT.
Is DTC detected?
YES- Go to
NO- GO TO 2.

2. PERFORM DTC CONFIRMATION PROCEDURE 2

1.Insert Intelligent Key into the key slot.
2.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.
3.Check "Self diagnostic result" with CONSULT.
Is DTC detected?
YES- Go to .
NO- INSPECTION END


Diagnosis Procedure


1. INSPECTION START

Perform inspection in accordance with procedure that confirms DTC.
Which procedure confirms DTC?
DTC confirmation procedure 1-GO TO 2.
DTC confirmation procedure 2-GO TO 4.

2. CHECK PUSH-BUTTON IGNITION SWITCH OUTPUT SIGNAL 1

1.Turn ignition switch OFF.
2.Disconnect push-button ignition switch connector and IPDM E/R connector.
3.Check voltage between push-button ignition switch harness connector and ground.





Is the inspection result normal?
YES- GO TO 6.
NO- GO TO 3.

3. CHECK PUSH-BUTTON IGNITION SWITCH CIRCUIT 1

1.Disconnect BCM connector.
2.Check continuity between push-button ignition switch harness connector and BCM harness connector.





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





Is the inspection result normal?
YES- GO TO 6.
NO- Repair or replace harness or connector.

4. CHECK PUSH-BUTTON IGNITION SWITCH OUTPUT SIGNAL 2

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





Is the inspection result normal?
YES- GO TO 6.
NO- GO TO 5.

5. CHECK PUSH-BUTTON IGNITION SWITCH CIRCUIT 2

1.Disconnect IPDM E/R connector.
2.Check continuity between push-button ignition switch harness connector and IPDM E/R harness connector.





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





Is the inspection result normal?
YES- GO TO 6.
NO- Repair or replace harness or connector.

6. CHECK INTERMITTENT INCIDENT

Intermittent Incident.
- INSPECTION END