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Home >> Infiniti >> 2004 >> QX56 RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1207 (Automatic Transmission) >> Trouble Diagnosis For Symptoms >> A/T CHECK Indicator Lamp Does Not Come On >> Diagnostic Procedure

Diagnostic Procedure

WARNING: This page is about a different car, the 2005 Infiniti QX56. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK CAN COMMUNICATION LINE 

    Perform the self-diagnosis. Refer to "SELF-DIAGNOSTIC RESULT MODE ".

    Is a malfunction in the CAN communication indicated in the results? 

    1. YES: Check CAN communication line. Refer to "DTC U1000 CAN COMMUNICATION LINE ".
    2. NO: 2.
  2. CHECK A/T CHECK INDICATOR LAMP CIRCUIT 

    Check the combination meter. Refer to "COMBINATION METERS ".

    OK or NG 

    1. OK: 3.
    2. NG: Repair or replace damaged parts.
  3. CHECK TCM POWER SUPPLY AND GROUND CIRCUIT 

    Check TCM power supply and ground circuit. Refer to "MAIN POWER SUPPLY AND GROUND CIRCUIT ".

    OK or NG 

    1. OK: INSPECTION END 
    2. NG: Repair or replace damaged parts.
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