Diagnostic Procedure 2 (Key Switch Insert Signal Check)

CHECK KEY SWITCH INPUT SIGNAL
Check voltage between time control unit terminal 4 and ground.

Fig 1: Time Control Unit Terminal 4 And Ground Voltage Specifications
Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 2: Checking Voltage Between Time Control Unit Terminal 4 And Ground
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
Check continuity between terminals 1 and 2.

Fig 3: Checking Continuity Between Terminals 1 And 2
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG
1. OK : Check the following.
  - 10A fuse [No. 12, located in fuse block (J/B)]
  - Harness for open or short between key switch and fuse
  - Harness for open or short between time control unit and key switch
2. NG : Replace key switch.