Tests AB: DTC U0100 Lost Communication With ECM/PCM

PINPOINT TEST AB: DTC U0100 LOST COMMUNICATION WITH ECM/PCM

AB1-AB4:

Normal Operation
The adaptive front lighting module receives vehicle speed information from the PCM. If the adaptive front lighting module does not receive communication from the PCM, DTC U0100 is set.

This pinpoint test is intended to diagnose the following:
- Adaptive front lighting module
- PCM