Signal Too Low

Signal too low

Status check
If the fuel gauge displays a full tank it indicates that the fault is permanent.

Does the fuel gauge display a full tank?

Yes - Checking components and wiring

No - Checking components and wiring

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Checking components and wiring

Hint: If the cable and the combined instrument panel are fault free the voltage between terminals #A and #C on the fuel level sensor connector must be approximately 5 V.

Check the signal cable between fuel level sensor terminal #A and combined instrument panel terminal #B17 (#17). Check for a short-circuit to ground.
Remedy as necessary.

Other information:
- Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault
- To connect the breakout box, see Connecting the breakout box Connecting the Breakout Box, Driver Information Module (DIM)
- To access and replace the combined instrument panel, see Driver information module, removing/installing Removal and Replacement
- For information about signals, see Signal specification Signal Specification, Driver Information Module (DIM).













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.
Check that the fuel gauge is within its permitted range.

Is the fuel gauge within its permitted range?

Yes - VERIFIED

No - VERIFICATION FAILED

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VERIFIED - FAULT FOUND

VERIFICATION FAILED - 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 components and wiring

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Checking components and wiring

Hint: If the cable and the combined instrument panel are fault free the voltage between terminals #A and #C on the fuel level sensor connector must be approximately 5 V.

Check the signal cable between fuel level sensor terminal #A and combined instrument panel terminal #B17 (#17). Check for an intermittent short-circuit to ground.
Remedy as necessary.

Other information:
- Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults
- To connect the breakout box, see Connecting the breakout box Connecting the Breakout Box, Driver Information Module (DIM)
- To access and replace the combined instrument panel, see Driver information module, removing/installing Removal and Replacement
- For information about signals, see Signal specification Signal Specification, Driver Information Module (DIM).













Continue - Fault-tracing information

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Fault-tracing information




Information

Fault-tracing information
If the fault is intermittent, do not verify fault-tracing if the fault does not recur.
It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

Do you want to view the information again?

Yes - Attempt New Test

No - FAULT FOUND

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Attempt New Test - Checking components and wiring

FAULT FOUND - DONE

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