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Home >> Nissan-Datsun >> 2004 >> Altima S, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 831 (Tires, Wheels & Tire Pressure Monitoring System (TPMS)) >> Trouble Diagnosis For Symptoms >> Low Tire Pressure Warning Lamp Flashes When Ignition Switch Is Turned On. >> Diagnostic Procedure

Diagnostic Procedure

WARNING: This page is about a different car, the 2007 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK BCM CONNECTORS 
    1. Turn ignition switch OFF.
    2. Disconnect BCM harness connectors M18 and M20.
    3. Check terminals for damage or loose connections.

    Inspection results OK? 

    OK: GO TO 2.

    NG: Repair or replace damaged parts.

  2. CHECK TIRE PRESSURE WARNING CHECK CONNECTOR CIRCUIT 

    Check continuity between BCM harness connector M18 terminal 15 and check connector M123 terminal 1.

    Fig 1: Checking Continuity Between BCM Connector Terminal 15 And Check Connector M123 Terminal 1
    G04902178

    Continuity should exist. 

    OK or NG 

    OK: Replace BCM. Refer to "BCM ".

    NG: Repair or replace harness connector.