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Home >> Jaguar >> 2014 >> XK Base, 2D Coupe >> Repair and Diagnosis >> Suspension >> Wheels & Tire System >> Wheels & Tires -- XK/X150 >> Wheels And Tires >> Tire Pressure Monitoring System >> Diagnosis And Testing >> Pinpoint Tests >> Pinpoint Test B: Left Front Low Frequency Initiator Circuit

Pinpoint Test B: Left Front Low Frequency Initiator Circuit

  1. B1: CHECK THE INITIATOR CIRCUIT FOR SHORT CIRCUIT TO GROUND 
    1. Ignition off.
    2. Disconnect the left hand front low-frequency initiator electrical connector, C1MC40.
      G11504227
    3. Measure the resistance between:
      C1MC40, HARNESS SIDE BATTERY
      Pin 2 Negative terminal

    Is the resistance less than 10, 000 Ohms?

    • Yes  : GO to  B5.
    • No  : GO to  B2.
  2. B2: CHECK THE INITIATOR CIRCUIT FOR SHORT CIRCUIT TO POWER 
    1. Measure the resistance between:
      C1MC40, HARNESS SIDE BATTERY
      Pin 2 Positive terminal

    Is the resistance less than 10, 000 Ohms?

    • Yes  : GO to  B6.
    • No  : GO to  B3.
  3. B3: CHECK THE INITIATOR CIRCUIT FOR SHORT CIRCUIT TO GROUND 
    1. Measure the resistance between:
      C1MC40, HARNESS SIDE BATTERY
      Pin 1 Negative terminal

    Is the resistance less than 10, 000 Ohms?

    • Yes  : GO to  B7.
    • No  : GO to  B4.
  4. B4: CHECK THE INITIATOR CIRCUIT FOR SHORT CIRCUIT TO POWER 
    1. Measure the resistance between:
      C1MC40, HARNESS SIDE BATTERY
      Pin 1 Positive terminal

    Is the resistance less than 10, 000 Ohms?

    • Yes  : GO to  B8.
    • No  : GO to  B9.
  5. B5: CHECK WHETHER THE SHORT CIRCUIT IS IN THE HARNESS OR THE MODULE 
    1. Disconnect the Tire Pressure Monitoring System module connector, C3MC39A.
      G11504228
    2. Measure the resistance between:
      C1MC40, HARNESS SIDE BATTERY
      Pin 2 Negative terminal

    Is the resistance less than 10, 000 Ohms?

    • Yes  : REPAIR the short circuit. This circuit contains intermediate connector, C13-B. For additional information, refer to the wiring diagram. Clear the DTC and run an On Demand Self Test (ODST) using the manufacturer approved diagnostic system to confirm rectification.
    • No  : INSTALL a new Tire Pressure Monitoring System module. Refer to:

      Tire Pressure Monitoring System Module - Convertible  (Removal and Installation),

      Tire Pressure Monitoring System Module - 2-Door  (Removal and Installation).

  6. B6: CHECK WHETHER THE SHORT CIRCUIT IS IN THE HARNESS OR THE MODULE 
    1. Disconnect the Tire Pressure Monitoring System module connector, C3MC39A.
      G11504228
    2. Measure the resistance between:
      C1MC40, HARNESS SIDE BATTERY
      Pin 2 Positive terminal

    Is the resistance less than 10, 000 Ohms?

    • Yes  : REPAIR the short circuit. This circuit contains intermediate connector, C13-B. For additional information, refer to the wiring diagram. Clear the DTC and run an On Demand Self Test (ODST) using the manufacturer approved diagnostic system to confirm rectification.
    • No  : INSTALL a new Tire Pressure Monitoring System module. Refer to:

      Tire Pressure Monitoring System Module - Convertible  (Removal and Installation),

      Tire Pressure Monitoring System Module - 2-Door  (Removal and Installation).

  7. B7: CHECK WHETHER THE SHORT CIRCUIT IS IN THE HARNESS OR THE MODULE 
    1. Disconnect the Tire Pressure Monitoring System module connector, C3MC39A.
      G11504228
    2. Measure the resistance between:
      C1MC40, HARNESS SIDE BATTERY
      Pin 1 Negative terminal

    Is the resistance less than 10, 000 Ohms?

    • Yes  : REPAIR the short circuit. This circuit contains intermediate connector, C13-B. For additional information, refer to the wiring diagram. Clear the DTC and run an On Demand Self Test (ODST) using the manufacturer approved diagnostic system to confirm rectification.
    • No  : INSTALL a new Tire Pressure Monitoring System module. Refer to:

      Tire Pressure Monitoring System Module - Convertible  (Removal and Installation),

      Tire Pressure Monitoring System Module - 2-Door  (Removal and Installation).

  8. B8: CHECK WHETHER THE SHORT CIRCUIT IS IN THE HARNESS OR THE MODULE 
    1. Disconnect the Tire Pressure Monitoring System module connector, C3MC39A.
      G11504228
    2. Measure the resistance between:
      C1MC40, HARNESS SIDE BATTERY
      Pin 1 Positive terminal

    Is the resistance less than 10, 000 Ohms?

    • Yes  : REPAIR the short circuit. This circuit contains intermediate connector, C13-B. For additional information, refer to the wiring diagram. Clear the DTC and run an On Demand Self Test (ODST) using the manufacturer approved diagnostic system to confirm rectification.
    • No  : INSTALL a new Tire Pressure Monitoring System module. Refer to:

      Tire Pressure Monitoring System Module - Convertible  (Removal and Installation),

      Tire Pressure Monitoring System Module - 2-Door  (Removal and Installation).

  9. B9: CHECK THE INITIATOR CIRCUIT FOR HIGH RESISTANCE 
    1. Measure the resistance between:
      C3MC39A, HARNESS SIDE C1MC40, HARNESS SIDE
      Pin 14 Pin 2

    Is the resistance greater than 5 Ohms?

    • Yes  : REPAIR the high resistance circuit. This circuit contains intermediate connector, C13-B. For additional information, refer to the wiring diagram. Clear the DTC and run an On Demand Self Test (ODST) using the manufacturer approved diagnostic system to confirm rectification.
    • No: GO to  B10.
  10. B10: CHECK THE INITIATOR CIRCUIT FOR HIGH RESISTANCE 
    1. Measure the resistance between:
      C3MC39A, HARNESS SIDE C1MC40, HARNESS SIDE
      Pin 13 Pin 1

    Is the resistance greater than 5 Ohms?

    • Yes  : REPAIR the high resistance circuit. This circuit contains intermediate connector, C13-B. For additional information, refer to the wiring diagram. Clear the DTC and run an On Demand Self Test (ODST) using the manufacturer approved diagnostic system to confirm rectification.
    • No  : INSTALL a new left hand front low-frequency initiator. Refer to: Tire Pressure Monitoring System Front Antenna .
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