Checking the Relay Power Supply

Checking The Relay Power Supply





- Remove component Fog lights relay









- Connect test lamp 86 11 857 to pin 3 (86) of the relay holder and a good grounding point.





- The test lamp should light.

Checking The Wiring Harness
Jiggle the leads and in-use connectors at several places and in different directions to reveal intermittent breaks and short circuits in the wiring harness. Observe the multimeter, test lamp or diagnostic tool while doing this.

Is the function correct?

NO - Rectifying the Lead

YES - Checking the Control Module's Output to the Relay.