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Home >> Mercury >> 2009 >> Mariner Base, 2.5 7, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 32 (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 Ford Mustang. 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 THE IGNITION SWITCH 
    • Carry out the Ignition Switch Component Test. Refer to COMPONENT TESTING.
    • Is the ignition switch OK? 
    1. YES  : Go to  D2.
    2. NO  : INSTALL a new ignition switch. REFER to Ignition Switch . TEST the system for normal operation.
  2. D2 CHECK FOR VOLTAGE AT THE SJB 
    • Key in OFF position.
    • Disconnect: SJB C2280a
    • Key in START position.
      • Fig 1: Measuring Voltage Between SJB C2280A-12, Circuit 1522 (DG) And Ground
      GF0015986Courtesy of FORD MOTOR CO.
    • Measure the voltage between SJB C2280a-12, circuit 1522 (DG), harness side and ground.
    • Is the voltage greater than 10 volts? 
    1. YES  : Go to  D4.
    2. NO  : Go to  D3.
  3. D3 CHECK CIRCUIT 1522 (DG) FOR AN OPEN OR A SHORT TO GROUND 
    • Key in OFF position.
    • Disconnect: Ignition Switch C250
      • Fig 2: Checking Circuit 1522 (DG) For Open Or Short To Ground
      GF0015987Courtesy of FORD MOTOR CO.
    • Measure the resistance between:
      • SJB C2280a-12, circuit 1522 (DG), harness side and ignition switch C250-7, circuit 1522 (DG), harness side.
      • SJB C2280a-12, circuit 1522 (DG), harness side and ground.
    • Are the resistances greater than 10,000 ohms between the SJB and the ignition switch, and less than 5 ohms between the SJB and ground? 
    1. YES  : Go to  D4.
    2. NO  : REPAIR circuit 1522 (DG). TEST the system for normal operation.
  4. D4 CHECK FOR CORRECT SJB OPERATION 
    • Key in OFF position.
    • Check SJB C2280a for:
      • corrosion.
      • pushed-out pins.
      • spread terminals.
    • Connect: SJB C2280a
    • Make sure the connector seats correctly, then 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. 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. TEST the system for normal operation.
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