Checking the Operation of the Relay - II

Checking The Operation Of The Relay







Unplug the connector:
- H4-18
- Connect test lamp 86 11 857 to pins 1 and 2 of the female connector.







- The lamp should light.

Checking the wiring harness.
Jiggle the leads and in-line 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 - Continue With Checking The Operation Of The Relay

YES - Checking the Wiring Harness












- Connect test lamp 86 11 857 to B+ and pin 2 of the female connector.







- The lamp should light.


Checking the wiring harness.
Jiggle the leads and in-line 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 - VIII

YES - Rectifying the Lead - XVI