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Home >> Infiniti >> 2012 >> M37 Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 114 (Audio, Visual & Navigation System (Base Audio Without Navigation)) >> DTC/Circuit Diagnosis >> Control Signal Circuit >> Diagnosis Procedure
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Diagnosis Procedure

WARNING: This page is about a different car, the 2013 Infiniti M56 and 2013 Infiniti M37. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK CONTINUITY CONTROL SIGNAL CIRCUIT 
    1. Turn ignition switch OFF.
    2. Disconnect TEL adapter unit connector.
    3. Check continuity between TEL adapter unit harness connector and ground.
      TEL adapter unit Ground Continuity
      Connector Terminals
      B237 21 Existed
      23
      24

      Is the inspection result normal? 

      YES: Replace TEL adapter unit. Refer to "REMOVAL AND INSTALLATION ".

      NO: Repair harness or connector.

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