Checking The Fuel Pump (FP)

Checking the fuel pump (FP)

Checking the fuel pump (FP)




- ignition on
Activate fuel pump (FP).
Open fuel tank filler cap, listen for the fuel pump (FP).









Is the fuel pump (FP) working?

Yes - DONE

No - Checking power supply and ground terminals

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Checking power supply and ground terminals
Check fuse 11 B/7. If the fuse is blown check the circuit after the fuse for a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault
Check cable between fuse 11 B/7 and fuel pump (FP) relay #1 for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault
Check cable between fuel pump relay #3 and fuel pump (FP) #1 for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Check ground terminal between fuel pump (FP) #3 and ground terminal 31/48, ground terminal right cross member, for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Remedy as necessary

Other information
- For the location of and to replace the fuel pump (FP), see Fuel pump, replacement Fuel Pump, Replacement.
- For information about signals, see Signal specification Signal Specifications.
- For information about circuit see the relevant wiring diagram














Continue - Verification

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Verification




- ignition on
Activate fuel pump (FP).
Open fuel tank filler cap, listen for the fuel pump (FP).









Is the fuel pump (FP) working?

Yes - FAULT FOUND

No - Fault-tracing information

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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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VERIFIED - DONE

Attempt New Test - Checking power supply and ground terminals

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