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 DETECTION LOGIC:

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-III.
Is DTC detected?
YES - Go to Security System
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-III.
Is DTC detected?
YES - Go to Security System.
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
Refer to Intermittent Incident.
- INSPECTION END