Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

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Test W

PINPOINT TEST W: THE HEADLAMPS DO NOT ILLUMINATE WHEN THE WIPERS ARE ON


Test W1-W3:






Test W3-W6:






Normal Operation
The windshield wipers are activated by a ground signal sent from the wiper motor through circuit 8-KA5 (WH/BK) to the front electronic module (FEM). After ten seconds of a continuous ground signal from the wiper motor on circuit 8-KA5 (WH/BK), the front electronic module (FEM) illuminates the headlamps.

Possible Causes
- circuit 8-KA5 (WH/BK) open
- FEM
- wiper motor