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PRE-RELEASE

B2575

Read the instructions below then start the fault diagnostic procedure.

Symptom: Xenon lamp malfunction. Warning lamp on in MIU.

B2575


Malfunctioning circuit for Xenon lamp or Xenon lamp broken

Warning

HIGH TENSION

The headlamp/AHL control module and xenon headlamp ignition transformer generate a voltage in excess of 23 000 V. This voltage can be lethal to individuals with a weak heart or pacemaker. Treat this system with great respect and turn off the ignition before working on the system's components.


Warning

Read through Safety and handling instructions, headlamps with xenon bulbs before starting.


Fault symptoms

Xenon lamp malfunction.

Warning lamp on in MIU.

Enable criteria

Xenon lamp on.

Fault criteria

Break or lamp current exceeds 3.5A.

System reaction to a fault

Control unit for the faulty headlamp cuts the output to the headlights.

Checking the wiring harness

Jiggle the wiring harness at several points and in different directions to detect intermittent breaks and short-circuits in the leads. Observe the multimeter, test lamp or diagnostic tool during the test.

PRE-RELEASE