Column Shift Diagnosis Procedure

KEY SWITCH (BCM INPUT)

COLUMN SHIFT : Diagnosis Procedure

Regarding Wiring Diagram information, Wiring Diagram - King Cab or Wiring Diagram - Crew Cab.

1. CHECK KEY SWITCH INPUT SIGNAL

With CONSULT
Check key switch "KEY ON SW" in DATA MONITOR mode with CONSULT. Door Lock.
- 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 circuit is OK.
NO- GO TO 2

2. CHECK KEY SWITCH

1.Turn ignition switch OFF.
2.Disconnect key switch connector.
3.Check continuity between key switch terminals 3 and 4.










Is the inspection result normal?
YES- GO TO 3
NO- Replace key switch.

3. CHECK KEY SWITCH CIRCUIT

1.Disconnect BCM connector.





2.Check continuity between the BCM harness connector M18 terminal 37 and key switch harness connector M80 terminal 4.
3.Check continuity between BCM harness connector M18 terminal
37 (B/R) and ground.
37 - 4: Continuity should exist
37 - Ground: Continuity should not exist

Is the inspection result normal?
YES-Check the following:
- 10A fuse [No. 19, located in fuse block (J/B)]
- Harness for open or short between key switch and fuse
NO- Repair or replace harness.