Fault-Tracing Information

Fault-tracing

Checking the connectors




- Ignition off.
Check the connectors and wiring for the suspension module (SUM) and the cable harness. Check for contact resistance and oxidation. Check for loose connections.
Check for damage carefully.

Other information
- Suspension Module, SUM Service and Repair
- Checking wiring and terminals Checking Wiring And Terminals

Continue - Checking the components and wiring

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Checking the components and wiring




Check that the fuses for the suspension module (SUM) are intact.
Check that the control module power supply and ground terminal are fault-free.
Switch on the ignition.
Check that the control module is powered and grounded by changing the driving mode via the switches and checking that the mode changes.

Other information
- For further information about fuses and relays, see the Wiring Diagram
- Checking wiring and terminals Checking Wiring And Terminals

Was a fault detected?

Yes - Verification

No - Checking CAN cables

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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.
- Switch on the ignition for at least 10 seconds.
Try communicating with the control module by selecting one of the functions for vehicle communication under the Diagnostic tab.

Is communication established?

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 connectors

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Checking CAN cables

No Fault Found - Fault-tracing information

DONE - DONE

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