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Home >> Ford >> 2006 >> Focus ZX5 SE, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 932 (Instrument Cluster System And Panel Illumination) >> Diagnostic Tests >> Instrument Cluster and Panel Illumination >> Pinpoint Tests >> Pinpoint Test E: The Instrument Panel Illumination Does Not Dim >> Pinpoint Test E: The Instrument Panel Illumination Does Not Dim

Pinpoint Test E: The Instrument Panel Illumination Does Not Dim

WARNING: This page is about a different car, the 2007 Mercury Mariner and 2007 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION: Use the correct probe adaptor(s) when making measurements. Failure to use the correct probe adaptor(s) may damage the connector.
  1. E1 CHECK THE RECORDED INSTRUMENT CLUSTER DTCs 
    • Check the recorded results from the instrument cluster self-test.
    • Are any DTCs present? 
    1. YES  : For DTC B1246, go to  E2 .

      For all other DTCs, REFER to the Instrument Cluster Diagnostic Trouble Code (DTC) Index.

    2. NO  : Go to  E3.
  2. E2 CHECK CIRCUIT 1011 (TN/OG) FOR A SHORT TO GROUND 
    • Disconnect: Instrument Panel Dimmer Switch C2065
      • Fig 1: Checking Circuit For Ground
      GF0025802Courtesy of FORD MOTOR CO.
    • Measure the resistance between the instrument cluster C220-23, circuit 1011 (TN/OG), harness side and ground.
    • Is the resistance greater than 10,000 ohms? 
    1. YES  : INSTALL a new instrument panel dimmer switch. CLEAR the DTC. REPEAT the self-test.
    2. NO  : REPAIR the circuit. CLEAR the DTC. REPEAT the self-test.
  3. E3 CHECK CIRCUIT 570 (BK/WH) FOR AN OPEN 
    • Key in OFF position.
    • Disconnect: Instrument Panel Dimmer Switch C2065
      • Fig 2: Checking Circuit For Open
      GF0025803Courtesy of FORD MOTOR CO.
    • Measure the resistance between the instrument panel dimmer switch C2065-5, circuit 570 (BK/WH), harness side and ground.
    • Is the resistance less than 5 ohms? 
    1. YES  : Go to  E4.
    2. NO  : REPAIR the circuit. TEST the system for normal operation.
  4. E4 CHECK THE INSTRUMENT PANEL DIMMER SWITCH 
    • Carry out the instrument panel dimmer switch component test. Refer to COMPONENT TESTING article.
    • Is the instrument panel dimmer switch OK? 
    1. YES  : Go to  E5.
    2. NO  : INSTALL a new instrument panel dimmer switch. TEST system for normal operation.
  5. E5 CHECK CIRCUIT 1011 (TN/OG) FOR AN OPEN 
    • Disconnect: Instrument Cluster C220
      • Fig 3: Checking Circuit For Open
      GF0025804Courtesy of FORD MOTOR CO.
    • Measure the resistance between the instrument cluster C220-23, circuit 1011 (TN/OG), harness side and the instrument panel dimmer switch C2065-3, circuit 1011 (TN/OG), harness side.
    • Is the resistance less than 5 ohms? 
    1. YES  : Go to  E6.
    2. NO  : REPAIR the circuit. TEST the system for normal operation.
  6. E6 CHECK FOR CORRECT INSTRUMENT CLUSTER OPERATION 
    • Disconnect the instrument cluster connector.
    • Check for:
      • corrosion
      • damaged pins
      • pushed-out pins
    • Connect the instrument cluster connector and make sure it seats correctly.
    • Operate the system and verify the concern is still present.
    • Is the concern still present? 
    1. YES  : INSTALL a new instrument cluster. REFER to INSTRUMENT CLUSTER article. REPEAT the self-test.
    2. NO  : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the self-test.
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