Internal Fault

Internal fault

Replacing a component
Convertible Roof Module (CRM) has registered an internal malfunction.
If the fault is intermittent it means that it has been registered previously but is no longer present. Intermittent faults can occur for a number of different reasons. The fault is evaluated depending on how it occurs. If the malfunction reappears, replace Convertible Roof Module (CRM).

Note! Before continuing with fault-tracing, the following must be checked: Check the connections between the hydraulic pump and Convertible Roof Module (CRM). Check the cables. Check for a short-circuit to ground, short-circuit to supply voltage and for a short-circuit to each other. Take readings between:
- Convertible Roof Module (CRM) terminal #A1 (#A1) and hydraulic pump's voltage supply.
- Convertible Roof Module (CRM) terminal #A2 (#A2) and hydraulic pump's ground.
- Also check the cables for a short-circuit to each other.

Replace the signal cable if a fault is found.
Change the convertible roof module (CRM) if the above check does not reveal any faults.
Remedy as necessary.

Other information
- Convertible Roof Module (CRM) Removal and Replacement





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.
- Ignition on.
Check the function of the convertible roof module (CRM) by operating the roof with the control buttons.





Does operation of the roof work?

Yes - FAULT FOUND

No - No Fault Found

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No Fault Found - 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 - Replacing a component

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