Open-Circuit or Short-Circuit to Ground

Open-circuit or short-circuit to ground

Checking the wiring








- Ignition off
- Check the fuse for voltage feed to fuel pump/fuel pump module.
- Disconnect central electronic module (CEM) connector A.
Check central electronic module (CEM) connector A and the connectors for the fuel pump (FP). Check for contact resistance. Check for oxidation. Check for damaged or loose connections.
Check the cable. Check for an open-circuit. Check for a short-circuit to ground.
Take readings between:
- Central electronic module (CEM) terminal #A16 (16) and fuel pump/fuel pump control module.
Remedy as necessary.

Other information
- For further information about the fuses and relays, see the Wiring Diagram
- Connecting the breakout box Connecting the Breakout Box, Central Electronic Module (CEM)
- Signal specification Signal Specification
- Location of components Component Location, Central Electronic Module (CEM)
- Checking wiring and terminals Checking Wiring and Terminals





Continue - Verification

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Verification




Verification

Hint: After carrying out the repair, check that the fault has been remedied.








- Ignition off
- Reinstall the connectors, components etc.
- Try to start the engine.

Does the engine start?

Yes - Troubleshooting procedure complete

No - Fault-tracing information

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Fault-tracing information




Information

Fault-tracing information
The fault should have been detected and remedied. As this is not the case fault-tracing has failed.
Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Do you want to exit fault-tracing?

Yes - Exit Fault-tracing

No - Attempt New Test

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Attempt New Test - Checking the wiring

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