[2] Check component M3 (Fuel pump).: Short circuit to ground

[2] Check component M3 (Fuel pump).: Short circuit to ground

Test 1: Signal wire Check component M3 (Fuel pump).

1. Signal wire Check component M3 (Fuel pump).

Test 1.1: Test signal cable of component M3 (Fuel pump) for Short circuit to ground.

1.1. Test signal cable of component M3 (Fuel pump) for Short circuit to ground.
Special tools

- Test cable 271 589 00 63 00
- Socket box 129 589 00 21 00
Test sequence

- Switch off ignition.
- Connect 36-pole socket box at engine wiring harness.
- Remove relay N10/2kA (Fuel pump relay).
- Measure resistance with multimeter between ground and socket (2.55) 25 of the 35-pole socket box tester.
Specified value:

- Resistorinfinite
Question

- Is the measurement value OK?


YES
The measurement value is OK.Possible cause and remedy

- In the event of stored faults with a high fault frequency count or in the event of customer complaints, check lines and connectors for loose contact and corrosion..
End of test

NO
The measurement value is not OK.Possible cause and remedy

- Test cables and connections, rectify any short circuit.
End of test