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Home >> Jaguar >> 2003 >> XJ8 Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 112 (Module Communications Network) >> Module Communications Network >> Communications Network - Diagnostic Procedures >> Pinpoint Tests >> Pinpoint Test AD: LEFT-HAND HID HEADLAMP POWER SUPPLY OR GROUND FAULT

Pinpoint Test AD: LEFT-HAND HID HEADLAMP POWER SUPPLY OR GROUND FAULT

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2006 Jaguar XKR, 2006 Jaguar XK8, 2005 Jaguar XKR, 2005 Jaguar XK8, and 2004 Jaguar XKR. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK THE IGNITION SWITCHED SUPPLY TO THE LEFT-HAND HID 

    Disconnect the HID electrical connector, LF30.

    Turn the ignition switch to the ON position.

    Measure the voltage between LF30, pin 01 (WR) and GROUND.

    Is the voltage less than 10 volts? 

    YES:  REPAIR the circuit between the Left-hand HID and battery. This circuit includes the engine compartment fuse box, (fuse 03) the ignition positive relay and the high power protection module. For additional information, refer to the wiring diagrams. Test the system for normal operation.

    NO:  Go to step  2.

  2. CHECK THE PERMANENT GROUND TO THE LEFT-HAND HID 

    Turn the ignition switch to the OFF position.

    Measure the resistance between LF30, pin 03 (B) and GROUND.

    Is the resistance greater than 5 ohms? 

    YES:  REPAIR the high resistance circuit. For additional information, refer to the wiring diagrams. Test the system for normal operation.

    NO:  Check for DTCs indicating a faulty circuit. Contact dealer technical support for advice on possible HID failure