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Home >> Jaguar >> 2008 >> XJR >> Repair and Diagnosis >> Suspension >> Electronic Suspension >> Vehicle Dynamic Suspension (2003.5-09) >> Diagnosis And testing >> Vehicle Dynamic Suspension >> Pinpoint tests >> PINPOINT TEST G256924p2: B1312, B1471; HEADLAMP CIRCUIT MALFUNCTION >> G256924t2: CHECK THE HEADLAMP TO ASU PWM SIGNAL CIRCUIT FOR HIGH RESISTANCE

G256924t2: CHECK THE HEADLAMP TO ASU PWM SIGNAL CIRCUIT FOR HIGH RESISTANCE

  1. Disconnect the battery negative terminal.
  2. Disconnect the ASU electrical connector, CR89.
  3. Disconnect the right-hand headlamp electrical connector, EC06.
  4. Disconnect the left-hand headlamp electrical connector, EC57.
  5. Measure the resistance between CR89, pin 03 (Y) and EC06, pin 02 (Y).
  6. Measure the resistance between CR89, pin 03 (Y) and EC57, pin 02 (YB).
    • Is either resistance greater than 5 ohms? 
  1. -> Yes:  REPAIR the high resistance circuit. For additional information, refer to the appropriate SYSTEM WIRING DIAGRAMS article. CLEAR the DTC. TEST the system for normal operation.
  2. -> No:  Go to Pinpoint G256924t3: CHECK THE HEADLAMP TO ASU PWM SIGNAL CIRCUIT FOR SHORT TO GROUND .
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