Faulty Signal

Faulty signal

Checking the voltage




- Ignition off
- Disconnect the connector for the suspension module (SUM)
- Disconnect the connector for the central electronic module (CEM)
- Check these connectors. Check for contact resistance and oxidation
- Reinstall the components, reconnect the connectors etc.
- Ignition on
- Read off the voltage for the suspension module (SUM) and the central electronic module (CEM).
The voltage must be approximately 12 V.

Other information:
- To disconnect the connector for the suspension module (SUM), see Suspension module (SUM), replacing Service and Repair
- To disconnect the connector for the central electronic module (CEM), see Central electronic module (CEM), replacing Central Electronic Module (CEM), Replacing
- Checking wiring and terminals Checking Wiring And Terminals.





Was the voltage OK?

Yes - Fault Found

No - Checking the wiring

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Checking the wiring








- Ignition off
- Suspension module (SUM) disconnected
- Central electronic module (CEM) disconnected
- Connect a breakout box to the suspension module (SUM) and a breakout box to the central electronic module (CEM).
Check the cable for power supply between suspension module (SUM) terminal #C1 (31) and the system relay.
Check the power supply wiring for the central electronic module (CEM). See the Service Manual, Section 3, Wiring diagram.
Remedy as necessary.

Other information:
- To connect the breakout box to the suspension module (SUM), see Connecting the breakout box Connecting the Breakout Box, Suspension Module (SUM)
- To connect the breakout box to the central electronic module (CEM), see Connecting the breakout box Connecting the Breakout Box, Central Electronic Module (CEM)
- For information about signals for the suspension module (SUM), see Signal specification Signal Specification, Suspension Module (SUM)
- For information about signals for the central electronic module (CEM), see Signal specification Signal Description, Central Electronic Module (CEM)
- Checking wiring and terminals Checking Wiring And Terminals.










Continue - Verification

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Verification




Verification

Verification

Note! After carrying out the repair, check that the fault has been remedied.








- Ignition off
- Reinstall the connectors, components etc.
- Ignition on.
Read off the voltage for the suspension module (SUM) and the central electronic module (CEM).
The voltage must be approximately 12 V for both the suspension module (SUM) and the central electronic module (CEM)





Is the value OK?

Yes - VERIFIED

No - VERIFICATION FAILED

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VERIFIED - Fault Found

VERIFICATION FAILED - Diagnostic trouble code (DTC) information

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Diagnostic trouble code (DTC) 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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Attempt New Test - Checking the voltage

FAULT-TRACING FAILED - FAULT-TRACING FAILED

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