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: Key Switch Input Signal Voltage
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OK or NG

OK : Key switch is OK.

NG : GO TO 2.

Fig 2: Checking Key Switch Input Signal
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CHECK KEY SWITCH
Check continuity between terminals 1 and 2.

Fig 3: Checking Key Switch
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG

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
NG : Replace key switch.