Signal Too High

Signal too high

Checking the wiring








- Ignition off
- Connect the breakout box to the central electronic module (CEM)
- Start the engine.
Check the 30-supply to central electronic module (CEM) terminal #E27 (#27) and #D10 (#10). The voltage must not exceed 15 volts at 2,000 rpm.
Also check that the battery is not over-charging.
Remedy as necessary.

Other information
- Connecting the breakout box Connecting the Breakout Box, Central Electronic Module (CEM)
- Signal specification Signal Description, Central Electronic Module (CEM)
- Location of components Component Location, Central Electronic Module (CEM)
- Control module relay box passenger compartment 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.
- Start the engine.
Read off the 30-supply by clicking the VCT2000 symbol.
Check whether the value is within the permitted range, the normal value when the generator is loading: 13.0-14.5 V.





Is the value OK?

Yes - Troubleshooting procedure complete

No - 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 the wiring

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