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Home >> Infiniti >> 2004 >> QX56 RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1216 (Tires, Wheels & Tire Pressure Monitoring System (TPMS)) >> Trouble Diagnosis For Symptoms >> Inspection 1: Warning Lamp Does Not Come On When Ignition Switch Is Turned 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. SELF-DIAGNOSTIC RESULT CHECK 
    1. With the ignition switch OFF, connect CONSULT-II and CONSULT-II CONVERTER to the data link connector, then turn the ignition switch ON.
    2. Select "START (NISSAN BASED VHCL)".
    3. Select "BCM" on "SELECT SYSTEM" screen.
      NOTE: If the BCM is not indicated, Refer to "CAN COMMUNICATION ".
    4. Select "BCM C/U" on "SELECT WORK ITEM" screen, and select "SELF-DIAG RESULTS".
    5. Check display contents in self-diagnostic results.

    Is "CAN COMM CIRCUIT" displayed in the self-diagnosis display items? 

    1. YES: Malfunction in CAN communication system. Go To "CAN COMMUNICATION ".
    2. NO: GO TO 2.
  2. CHECK COMBINATION METER 

    Check combination meter operation.

    Inspection results OK? 

    1. OK: GO TO 3.
    2. NG: Check combination meter. Refer to "COMBINATION METERS ".
  3. CHECK LOW TIRE PRESSURE WARNING LAMP 

    Disconnect BCM harness connector.

    Does the low tire pressure warning lamp activate? 

    1. YES: Replace BCM. Refer to "REMOVAL AND INSTALLATION OF BCM ".
    2. NO: Check combination meter and repair or replace.
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