Key Switch Check

WARNING: This page is about a different car, the 2005 Nissan 350Z. However, it is still accessible from the selected car via links, so may be relevant.

CHECK KEY SWITCH
Check continuity key switch terminals 1 and 2.

Fig 1: Key Switch Terminals 1 & 2 Continuity Specifications Table
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG
- OK : GO TO 3.
- NG : Replace key switch.
Fig 2: Key Switch Terminals 1 & 2 Continuity Test
Courtesy of NISSAN MOTOR CO., U.S.A.
CHECK KEY SWITCH CIRCUIT
1. Disconnect BCM connector.
2. Check continuity between BCM harness connector M90 terminal 37 and key switch harness connector M25 terminal 1.
  - 37 (B/R) - 1 (B/R) : Continuity should exist.
3. Check continuity between BCM harness connector M90 terminal 37 and ground.
  - 37 (B/R) - Ground : Continuity should not exist.
Fig 3: BCM harness connector M90 terminal 37, key switch harness connector M25 terminal 1 & Ground Continuity Test
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG
- OK : Check the following.
  - 10A fuse [No. 21, located in the fuse block (J/B)]
  - Harness for open or short between key switch and fuse
- NG : Repair or replace harness.