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Home >> Jaguar >> 2009 >> XJR >> Repair and Diagnosis >> Brakes >> Parking Brake System >> Parking Brake And Actuation (2003.5-09) >> Diagnosis and Testing >> Parking Brake - VIN Range: G45171->G99999 >> Pinpoint Tests >> PINPOINT TEST G531320p9: PRIMARY APPLY SWITCH CIRCUIT OUT OF RANGE >> G531320t43: CHECK THE PRIMARY APPLY SWITCH CIRCUIT RESISTANCE

G531320t43: CHECK THE PRIMARY APPLY SWITCH CIRCUIT RESISTANCE

  1. Key off.
    Fig 1: Identifying Electric Parking Brake Module Connector Pins 1 (CR50)
    G06387613Courtesy of JAGUAR CARS, INC.
  2. Electric parking brake module connector 1 (CR50) disconnected.
    Fig 2: Identifying Electric Parking Brake Module Connector Pins 2 (CR32)
    G06387620Courtesy of JAGUAR CARS, INC.
  3. Electric parking brake module connector 2 (CR32) disconnected.
  4. Key on, engine off.
  5. Measure the resistance between:
    CONNECTOR REFERENCE CHART

    CR50 connector, harness side CR32 connector, harness side
    Electric parking brake switch release 1 - signal - Pin 10 Electric parking brake switch - switch return - Pin 06
    • Is the resistance between 595 ohms - 611 ohms? 
    • Yes:  An intermittent fault may be present in the wiring harness. Visually check for chaffed wires or other physical damage to the harness. If no fault is found in the circuit, suspect the following component(s): - EPB module - EPB module connector, CR50
    • No:  INSTALL a new EPB switch.

      PARKING BRAKE SWITCH (70.35.46) 

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