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Home >> Jaguar >> 2007 >> 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 G531320p12: PRIMARY RELEASE SWITCH CIRCUIT SHORT CIRCUIT TO GROUND >> G531320t47: CHECK THE PRIMARY RELEASE SIGNAL CIRCUIT FOR SHORT TO GROUND

G531320t47: CHECK THE PRIMARY RELEASE SIGNAL CIRCUIT FOR SHORT TO GROUND

  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.
  3. Key on, engine off.
  4. Measure the resistance between:
    CONNECTOR REFERENCE CHART

    CR50 connector, harness side Vehicle battery
    Electric parking brake switch release 1 - signal - Pin 11 Negative terminal
    • Is the resistance greater than 100 Kohms? 
    • 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:  GO to Pinpoint Test G531320T48 .
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