Checking the Operation of the Pump Relay

Checking The Operation Of The Pump Relay

















- Remove component: Fuel pump relay
- Connect a jumper lead between pin 1 (30) and pin 2 (87) of the relay holder.












- Connect test lamp 86 11 857 to the upper pin of the fuse holder and a good grounding point







- The test 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 - Checking the Relay Power Supply

YES - Changing Components - III