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Home >> Mercury >> 2010 >> Milan Base, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 660 (Instrument Cluster And Panel Illumination) >> Diagnosis And Testing >> Instrument Cluster and Panel Illumination >> Pinpoint Tests >> Pinpoint Test E: The Control Illumination Does Not Dim >> Pinpoint Test E: The Control Illumination Does Not Dim

Pinpoint Test E: The Control Illumination Does Not Dim

WARNING: This page is about a different car, the 2006 Mercury Milan, 2006 Lincoln Zephyr, and 2006 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.
  1. E1 CHECK THE DIAGNOSTIC TROUBLE CODES (DTCs) FROM THE SJB SELF-TEST 
    • Check the recorded results from the SJB self-test.
    • Is DTC B1247 recorded? 

    Yes  : GO to  E4.

    No  : GO to E2.

  2. E2 CHECK CIRCUIT VLN04 (VT/GY) FOR A SHORT TO VOLTAGE 
    • Disconnect: SJB C2280d.
    • Key in ON position.
    • Do the dimmable backlit components illuminate? 

    Yes  : REPAIR the circuit. TEST the system for normal operation.

    No  : GO to E3.

  3. E3 CHECK CIRCUIT CLN27 (WH/BN) FOR A SHORT TO VOLTAGE 
    • Disconnect: Instrument Panel Dimmer Switch C2065.
    • Measure the voltage between the instrument panel dimmer switch C2065-4, circuit CLN27 (WH/BN), harness side and ground.
      Fig 1: Checking Circuit CLN27 (WH/BN) For Short To Voltage
      G04682624Courtesy of FORD MOTOR CO.
    • Is there any voltage indicated? 

    Yes  : REPAIR the circuit. TEST the system for normal operation.

    No  : GO to  E6.

  4. E4 CHECK CIRCUIT CLN27 (WH/BN) FOR AN OPEN OR A SHORT TO GROUND 
    • Measure the resistance between the instrument panel dimmer switch C2065-4, circuit CLN27 (WH/BN), harness side and the SJB C2280d-11, circuit CLN27 (WH/BN), harness side; and between the instrument panel dimmer switch C2065-4, circuit CLN27 (WH/BN), harness side and ground.
      Fig 2: Checking Circuit CLN27 (WH/BN) For Open Or Short To Ground
      G04682625Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms between the instrument panel dimmer switch and the SJB, and greater than 10,000 ohms between the instrument panel dimmer switch and ground? 

    Yes  : GO to E5.

    No  : REPAIR the circuit. TEST the system for normal operation.

  5. E5 CHECK THE INSTRUMENT PANEL DIMMER SWITCH 
    • Carry out the component test for the instrument panel dimmer switch. Refer to COMPONENT TESTING .
    • Is the instrument panel dimmer switch OK? 

    Yes  : GO to E6.

    No  : INSTALL a new instrument panel dimmer switch. REFER to INSTRUMENT PANEL DIMMER SWITCH . TEST the system for normal operation.

  6. E6 CHECK FOR CORRECT SJB OPERATION 
    • Disconnect all the SJB connectors.
    • Check for:
      • Corrosion
      • Pushed-out pins
    • Connect all the SJB connectors and make sure they seat correctly.
    • Operate the system and verify the concern is still present.
    • Is the concern still present? 

    Yes  : INSTALL a new SJB. REFER to MULTIFUNCTION ELECTRONIC CONTROL MODULES . TEST the system for normal operation.

    No  : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.

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