Key Switch (insert) Check

WARNING: This page is about a different car, the 2003 Nissan Altima. However, it is still accessible from the selected car via links, so may be relevant.

CHECK KEY SWITCH INPUT SIGNAL
Check voltage between BCM harness connector M18 terminal 62 (B/R) and ground.

Fig 1: Checking Key Switch Input Signal (1 Of 2)
Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 2: Checking Key Switch Input Signal (2 Of 2)
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG?
1. OK: Key switch is OK.
2. NG: GO TO 2
CHECK KEY SWITCH (INSERT)
Check continuity between key switch connector M26 terminals 3 and 4.

Fig 3: Checking Key Switch (Insert) (1 Of 2)
Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 4: Checking Key Switch (Insert) (2 Of 2)
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG?
1. OK: Check the following.
  - 10A fuse [No. 19, located in fuse block (J/B)]
  - Harness for open or short between key switch and fuse
  - Harness for open or short between BCM and key switch
2. NG: Replace key switch.