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.

Note! Before continuing with fault-tracing, the following must be checked:
1. Check the cables between Convertible Roof Module (CRM) terminal #E14 (#B14) and supply voltage for sensors 15, 16 and 19. Check for a short-circuit to supply voltage.
2. Check the cables between Convertible Roof Module (CRM) terminal #E15 (#B15) and supply voltage for sensors 3, 7, 9, 11, 12 and 13. Check for a short-circuit to supply voltage.

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
- Signal specification Signal Specification, Convertible Roof Module (CRM)
- 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.
- 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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