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Home >> Infiniti >> 2003 >> Q45 >> Repair and Diagnosis >> External Pages >> Different car >> Section 210 (Electronic Key System) >> Electronic Key System >> Diagnostic Procedure 2 >> 4. Check Steering Lock Control Unit
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4. Check Steering Lock Control Unit

WARNING: This page is about a different car, the 2004 Infiniti Q45. However, it is still accessible from the selected car via links, so may be relevant.

Insert the electronic key into the ignition key cylinder, and immediately check voltage between steering control unit connector M69 terminal 3 (L) and ground.

Fig 1: Checking Steering Lock Control Unit (1 Of 2)
G00745061Courtesy of NISSAN MOTOR CO., U.S.A.
Fig 2: Checking Steering Lock Control Unit (2 Of 2)
G00745062Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG 

  1. OK : Replace steering lock control unit.
  2. NG :
    • Replace NATS IMMU.
    • Check harness for open or short between NATS IMMU and steering lock control unit.