4. Check Key Switch Circuit

1. Disconnect Intelligent Key unit connector.
2. Check continuity between Intelligent Key unit connector M34 terminal 7 (B/W) and key switch and ignition knob switch connector M22 terminal 4 (B/W).
   1. 7 (B/W) - 4 (B/W) : Continuity should exist. 
3. Check continuity between key switch and ignition knob switch connector M22 terminal 4 (B/W) and ground.
   1. 4 (B/W) - Ground : Continuity should not exist. 

Fig 1: Checking Continuity Between Key Switch And Ignition Knob Switch Connector M22 Terminal 4 (B/W) And Ground

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

OK or NG

OK : Replace Intelligent key unit.

NG : Repair or replace harness between Intelligent Key unit and key switch and ignition knob switch.