Signal Too Low. Permanent Fault

Signal too low. Permanent fault

Checking the power supply








- Ignition off
- Remove system relay 2/14 from the integrated relay / fusebox in the engine compartment.
Using a voltmeter, measure the voltage between system relay base terminal 5 and ground.













The voltmeter should read battery voltage.

OK - Checking the power cable

Not OK - Checking cables

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Checking the power cable




- Bridge the system relay base terminal 3 to 5 with a piece of electrical cable
- Ignition on.
Read off parameter BATTERY.









The parameter should display battery voltage.

OK - Verification

Not OK - Checking cables

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Checking cables
Check the cable between fuse no. 13 in the integrated relay / fusebox in the engine compartment and the system relay base terminal 5 for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring And Terminals. Permanent Fault.









Select Continue.

Continue - Verification

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Verification








- Ignition off
- Reconnect the connectors, reinstall components etc.
- Start the engine.
Read off parameter BATTERY.





Is the value OK?

Yes - FAULT FOUND

No - No Fault FoundFault-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 - FAULT-TRACING FAILED

No - Attempt New Test

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FAULT-TRACING FAILED - FAULT-TRACING FAILED

Attempt New Test - Checking the power supply

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