Faulty Signal

Faulty signal

Checking the wiring








- Ignition on.
Click on the symbol for VCT2000 to read out the voltage from the fuel level sensor.
For information on voltage levels for different fuel tanks, see component specification.
Check the power supply cable. Check for an open-circuit. Check for a short-circuit to supply voltage.
Take readings between:
- Central electronic module (CEM) terminal #F5 (#5) and right-hand fuel level sensor connector terminal #2
- Central electronic module (CEM) terminal #F7 (#7) and right-hand fuel level sensor connector terminal #4.
Remedy as necessary.

Other information
- Component specification [1][2]Body Control Systems
- Connecting the breakout box Connecting the Breakout Box, Central Electronic Module (CEM)
- Location of components Component Location, Central Electronic Module (CEM)
- Level sensor fuel tank, M66, AW55-50/51SN Service and Repair
- 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.
- Ignition on.
Read off the sensor signal by clicking the VCT2000 symbol.
Check that the value is between 0 and 5 volts.





Is the value OK?

Yes - VERIFIED

No - VERIFICATION FAILED

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VERIFIED - FAULT FOUND

VERIFICATION FAILED - Fault-tracing information

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Fault-tracing information

Attempt New Test - Checking the wiring

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