B1325 03

B1325 03

Control Module, Supply Voltage Low







Fault symptom
- Messages shown in SID.
- Headlamp beam adjustment not working.

On-board diagnosis

Type of diagnosis:
- Continuous

Enable criteria:
- Ignition ON.

Fault criteria:
- Input voltage below 9 V for more than 0.12 s.

System reaction to a fault:
- Headlamp beam adjustment is switched off.

OK report:
- Input voltage exceeds 9.5 V for more than 0.12 s.

Checking the wiring harness
- Jiggle the wiring harness at several points to detect intermittent breaks or short circuits. Check also the connector for oxidation or loose pins.

Diagnostic help

IMPORTANT: See "Safety and handling directions, xenon headlamps".