Key Switch (BCM Input)

KEY SWITCH (BCM INPUT)

Diagnosis Procedure

Regarding Wiring Diagram information, refer to "Wiring Diagram" Power Door Lock System.

1. CHECK KEY SWITCH INPUT SIGNAL

With CONSULT
Check key switch "KEY ON SW" in DATA MONITOR mode with CONSULT. Refer to "DOOR LOCK : CONSULT Function (BCM DOOR LOCK)" Without Intelligent Key System.
- When key is inserted to ignition key cylinder:
KEY ON SW: ON
- When key is removed from ignition key cylinder:
KEY ON SW: OFF
Without CONSULT
Check voltage between BCM connector M18 terminal 37 and ground.





Is the inspection result normal?
YES- Key switch (insert) circuit is OK.
NO- GO TO 2

2. CHECK KEY SWITCH (INSERT)

1.Turn ignition switch OFF.
2.Disconnect key switch connector.
3.Check continuity between key switch terminals.





Is the inspection result normal?
YES- Repair or replace harness or fuse.
NO- Replace key switch.