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Home >> Nissan-Datsun >> 2012 >> Sentra SE-R >> Repair and Diagnosis >> Suspension >> Wheels & Tire System >> Tires, Wheels & Tire Pressure Monitoring System (TPMS) >> Service Information >> Trouble Diagnosis For Symptoms >> Low Tire Pressure Warning Lamp Flashes When Ignition Switch Is Turned On >> Diagnostic Procedure

Diagnostic Procedure

  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? 

    YES: GO TO 2.

    NO: Repair or replace damaged parts.

  2. CHECK TIRE PRESSURE WARNING CHECK CONNECTOR CIRCUIT

    Check continuity between BCM harness connector M18 terminal 15 and ground.

    Fig 1: Checking Tire Pressure Warning Check Connector Circuit
    G04876603Courtesy of NISSAN NORTH AMERICA, INC.

    Continuity should not exist  .

    Does continuity exist? 

    YES: Repair circuit for short to ground.

    NO: Replace BCM. Refer to , "REMOVAL AND INSTALLATION OF BCM ".

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