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Home >> Mercury >> 2005 >> Sable Platinum Edition >> Repair and Diagnosis >> Electrical >> Gauges >> Instrument Cluster And Panel Illumination >> Diagnosis And Testing >> Instrument Cluster and Panel Illumination >> Pinpoint Tests >> Pinpoint Test D: A Single Illumination Source Is Inoperative

Pinpoint Test D: A Single Illumination Source Is Inoperative

  1. D1 CHECK VOLTAGE TO THE SINGLE ILLUMINATION SOURCE 
    • Key in OFF position.
    • Disconnect: Inoperative Illumination Source.
    • Measure the voltage between the inoperative illumination source, circuit 1045 (DB/WH), harness side and ground, while the headlamp switch is in the PARK position and the instrument panel dimmer switch in the fully illuminated position.
    • Is the voltage greater than 10 volts? 
    • Yes  : GO to  D2.
    • No  : REPAIR the circuit. TEST the system for normal operation.
  2. D2 CHECK SINGLE ILLUMINATION SOURCE GROUND 
    • Key in OFF position.
    • Measure the resistance between the inoperative illumination source, circuit 57 (BK), harness side and ground.
    • Is the resistance less than 5 ohms? 
    • Yes  : INSTALL a new component in question. TEST the system for normal operation.
    • No  : REPAIR the circuit. TEST the system for normal operation.