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Home › Infiniti › 2002 › Q45 › Repair and Diagnosis › Body & Frame › Door Locks › Electronic Key System › Symptom 2

Symptom 2

  1. CHECK SECURITY INDICATOR POWER CIRCUIT 
    • Turn ignition switch OFF.
    • Disconnect the security indicator connector.
    • Check voltage between security indicator harness connector M83 terminal 20(Y/G) and body ground.
      1. : Battery voltage should exist. 

    OK or NG? 

    1. OK >> GO TO 2.
    2. NG >> Check harness for open or short between fuse block and security indicator.
  2. SECURITY INDICATOR GROUND CIRCUIT 
    • Disconnect the NATS IMMU connector.
    • Check continuity between security indicator harness connector M83 terminal 19(G) and NATS IMMU harness connector M32 terminal 15(G).
      1. : Continuity should exist. 
    • Check continuity between NATS IMMU harness connector M32 terminal 15(G) and body ground.
      1. : Continuity should not exist. 

    OK or NG? 

    1. OK >> GO TO 3.
    2. NG >> Repair or replace harness.
  3. CHECK INDICATOR GROUND SIGNAL 
    1. Connect NATS IMMU connector.
    2. Check continuity between NATS IMMU harness connector M32 terminal 15(G) and body ground.
      1. : Continuity should exist intermittently. 

    OK or NG? 

    1. OK >> Replace security indicator.
    2. NG >> Replace NATS IMMU
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