Key Switch (Insert) Check (Column Shift)

WARNING: This page is about a different car, the 2005 Nissan Titan. However, it is still accessible from the selected car via links, so may be relevant.

CHECK KEY SWITCH INPUT SIGNAL

With CONSULT-II

Check key switch "KEY ON SW" in DATA MONITOR mode with CONSULT-II. Refer to "DATA MONITOR ".

When key is inserted to ignition key cylinder:
KEY ON SW : ON
When key is removed from ignition key cylinder:
KEY ON SW : OFF

Fig 1: Checking Key Switch With CONSULT-II (Column Shift)
Courtesy of NISSAN MOTOR CO., U.S.A.

Without CONSULT-II

Check voltage between BCM connector M18 terminal 37 and ground.

Fig 2: Checking Key Switch Voltage Between BCM Connector M18 Terminal 37 & Ground

Courtesy of NISSAN MOTOR CO., U.S.A.

BCM CONNECTOR M18 TERMINAL 37 & GROUND VOLTAGE REFERENCE

Connector	Terminal (Wire color)		Condition	Voltage (V)
Connector	(+)	(-)	Condition	Voltage (V)
M18	37 (B/R)	Ground	Key is inserted.	Battery voltage
M18	37 (B/R)	Ground	Key is removed.	0

OK or NG

OK : System is OK.
NG : GO TO 2.

CHECK KEY SWITCH (INSERT)

Turn ignition switch OFF.
Disconnect key switch connector.

Check continuity between key switch terminals 3 and 4.

Fig 3: Checking Key Switch (Insert) Continuity Between Terminals 3 & 4

Courtesy of NISSAN MOTOR CO., U.S.A.

KEY SWITCH TERMINAL 3 & 4 CONTINUITY REFERENCE

Terminals	Condition	Continuity
3 - 4	Key is inserted.	Yes
3 - 4	Key is removed.	No

OK or NG

OK : GO TO 3.
NG : Replace key switch.

CHECK KEY SWITCH CIRCUIT
1. Disconnect BCM connector.
2. Check continuity between the BCM harness connector M18 terminal 37 (B/R) and key switch harness connector M80 terminal 4 (B/R).
3. Check continuity between BCM harness connector M18 terminal 37 (B/R) and ground.
  37 (B/R) - 4 (B/R) : Continuity should exist
  
  37 (B/R) - Ground : Continuity should not exist
OK or NG
- OK : Check the following.
  - 10A fuse [No. 19, located in fuse block (J/B)]
  - Harness for open or short between key switch and fuse
- NG : Repair or replace harness.