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Home >> Mercury >> 2008 >> Milan Base, 2.3 Z, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 1374 (Steering Column Switches) >> Diagnostic Tests >> Steering Column Switches >> Pinpoint Tests >> Pinpoint Test D: No Power in START >> Pinpoint Test D: No Power In Start

Pinpoint Test D: No Power In Start

WARNING: This page is about a different car, the 2009 Mercury Milan, 2009 Lincoln MKZ, and 2009 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Use the Flex Probe Kit for all test connections to prevent damage to the wiring terminals. Do not use standard multi-meter probes.
  1. D1 CHECK CIRCUIT CDC35 (BU/WH) FOR VOLTAGE 
    • Key in OFF position.
    • Disconnect: SJB C2280b
    • Key in START position.
      • Fig 1: Checking Circuit CDC35 (BU/WH) For Voltage
      GF0030234Courtesy of FORD MOTOR CO.
    • Measure the voltage between SJB C2280b-30, circuit CDC35 (BU/WH), harness side and ground while turning the key to the crank position.
    • Is the voltage greater than 10 volts? 
    1. YES  : Go to  D3.
    2. NO  : Go to  D2.
  2. D2 CHECK CIRCUIT CDC35 (BU/WH) FOR AN OPEN OR A SHORT TO GROUND 
    • Key in OFF position.
    • Disconnect: Ignition Switch C250
      • Fig 2: Checking Circuit CDC35 (BU/WH) For Open Or Short To Ground
      GF0030235Courtesy of FORD MOTOR CO.
    • Measure the resistance between:
      • ignition switch C250-7, circuit CDC35 (BU/WH), harness side and SJB C2280b-30, circuit CDC35 (BU/WH), harness side.
      • SJB C2280b-30, circuit CDC35 (BU/WH), harness side and ground.
    • Are the resistances less than 5 ohms between the ignition switch and the SJB, and greater than 10,000 ohms between the SJB and ground? 
    1. YES  : Go to  D3.
    2. NO  : REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
  3. D3 CHECK FOR CORRECT SJB OPERATION 
    • Inspect the SJB connectors.
    • Check for:
      • corrosion.
      • pushed-out pins.
      • spread terminals.
    • 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? 
    1. YES  : INSTALL a new SJB. REFER to MULTIFUNCTION ELECTRONIC MODULES article.
    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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