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HOMESERVICE MANUALSMERCURY2010MARINER HYBRID, AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 403 (AUTOMATIC TRANSMISSION EXTERNAL CONTROLS - CD4E)DIAGNOSIS AND TESTINGEXTERNAL CONTROLSPINPOINT TESTPINPOINT TEST C: THE TRANSMISSION CONTROL SWITCH IS INOPERATIVE
2010 Mercury Mariner Hybrid, AWD

Pinpoint Test C: The Transmission Control Switch Is Inoperative

2010 Mercury Mariner Hybrid, AWDSECTION Pinpoint Test C: The Transmission Control Switch Is Inoperative
WARNING: This page is about a different car, the 2006 Mercury Mariner and 2006 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
  1. C1 CHECK THE CIRCUIT FOR VOLTAGE 
    • Key in OFF position.
    • Disconnect: Brake Shift Interlock Module.
    • Key in ON position.
    • Measure the voltage between brake shift interlock module pin 4, harness side and ground.
      Fig 1: Checking Circuit For Voltage
      G04620810
    • Is the voltage greater than 10 volts? 

    Yes  : GO to C2.

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

  2. C2 CHECK THE TRANSMISSION CONTROL SWITCH 
    • While cycling the transmission control switch, measure the resistance between brake shift interlock module pin 4 and pin 1, component side.
      Fig 2: Checking Transmission Control Switch
      G04620811
    • Does the resistance change from greater than 10,000 ohms to less than 5 ohms? 

    Yes  : GO to C3.

    No  : INSTALL a new brake shift interlock module. TEST the system for normal operation.

  3. C3 CHECK THE CIRCUIT FOR AN OPEN 
    • Key in OFF position.
    • Disconnect: Powertrain Control Module (PCM).
    • Measure the resistance between brake shift interlock module pin 1 and the PCM connector pin C29.
    • Is the resistance less than 5 ohms? 

    Yes  : GO to C4.

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

  4. C4 CHECK THE CIRCUIT FOR A SHORT TO GROUND 
    • Measure the resistance between PCM connector pin C29 and chassis ground.
    • Is the resistance greater than 10,000 ohms. 

    Yes  : GO to C5.

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

  5. C5 CHECK THE CIRCUIT FOR A SHORT TO VOLTAGE 
    • Measure the voltage between PCM connector pin C29 and chassis ground.
    • Is voltage present? 

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

    No  : REFER to the INTRODUCTION - GASOLINE .

RENDER: 1.0x

NO RELATED

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