Signal Too High. Permanent Fault

Signal too high. Permanent fault

Checking and replacing the component




- Ignition off.
Replace the relay, 2/17.
Activate the relay, press the horn.
If the function is OK, the cause of the fault was a defective relay (short-circuit in the relay).

Other information:
- For further information about the fuses and relays, see the Wiring Diagram.





Was the function OK?

Yes - Fault Found

No - Checking the wiring

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Checking the wiring
Remove horn relay 2/17 from the engine compartment relay base.
Check the relay coil driver circuit for a short-circuit to supply voltage: Measure the voltage between terminal #1 in the relay base and relay 2/17.
For further information about a short-circuit to supply voltage.

Hint: The voltage between terminal #2 and ground should be approximately 0 volt.

Other information:
- For information about the central electronic module (CEM), see Central electronic module (CEM), replacing Central Electronic Module (CEM), Replacing
- For further information about the fuses and relays, see the Wiring Diagram
- Checking wiring and terminals Checking Wiring And Terminals










Continue - Verification

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Verification




Verification

Verification

Hint: After the repair it is necessary to check that the fault has been rectified.








- Ignition off.
- Connect connectors, install components etc.
- Ignition on.
Activate relay, press horn.
If the function now operates, this means that the fault was probably caused by a short circuit in the relay driver circuit.

Does it work?

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 - FAULT-TRACING FAILED

No - Attempt New Test

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FAULT-TRACING FAILED - No Fault Found

Attempt New Test - Checking and replacing the component

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