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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 3: Warning Lamp Flashes 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. CHECK CONNECTOR 
    1. Disconnect BCM harness connectors M18 and M20.
    2. Check terminals for damage or loose connections.

    Inspection results OK? 

    1. OK: GO TO 2.
    2. NG: Repair or replace damaged parts.
  2. CHECK TIRE PRESSURE WARNING CHECK CONNECTOR CIRCUIT 

    Check continuity between BCM harness connector M18 terminal 15 (L/W) and check connector M123 terminal 1 (L/W).

    Fig 1: Checking Continuity Between BCM Harness Connector M18 Terminal 15 & Check Connector M123 Terminal 1
    G02384983Courtesy of NISSAN MOTOR CO., U.S.A.
    1. Continuity should exist 

    OK or NG 

    1. OK: Replace BCM. Refer to "REMOVAL AND INSTALLATION OF BCM ".
    2. NG: Repair or replace harness connector.
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