Faulty Signal. Permanent Fault

Faulty signal. Permanent fault

Checking the micro-switch








- Check the function of the micro-switch
- Check that the micro-switch appears undamaged
- Ignition on
- Operate the micro-switch manually
- Read off the status of the micro-switch.
The status should change from activation (micro-switch on) to non activation (micro-switch off).

Other information:
- For the location of the components, see Convertible system Component Locations
- For other values, see Opening and closing the convertible top Opening and Closing the Convertible Top
- To gain access to or replace the micro-switch for the front lock, see Replacing and adjusting micro-switches Replacing and Adjusting Micro-Switches
- There is a short-circuit to ground if the status is constantly low
- There is an open-circuit or a short-circuit to voltage if the status is constantly high.

Hint: The micro-switch can be activated by hand or using a pointed tool. Be careful.





Does the status change?

Yes - Verification

No - Checking the component

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Checking the component




- Ignition off.
Check the micro-switch connector. Check for a short-circuit to ground. See Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault. Check for contact resistance and oxidation. See Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Connect an ohmmeter between micro-switch connector terminal #1 and ground. The micro-switch must be in the unaffected position.
Check for a short-circuit to ground. See Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Try a new micro-switch if a short-circuit is found.
Connect an ohmmeter between micro-switch connector terminals #1 and #2. Check for an open-circuit. See Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Activate the micro-switch manually so that it is active throughout the time the reading is being taken.
Try a new micro-switch if an open-circuit is found.
If no faults are found there is probably a fault in the cable between the control module and the micro-switch connectors.
Remedy as necessary.

Other information:
- To access and replace the micro-switch for the front lock, see Replacing and adjusting micro-switches Replacing and Adjusting Micro-Switches.

Hint: The micro-switch can be activated by hand or using a pointed tool. Be careful.









Does the micro-switch function?

Yes - Verification

No - Checking the connectors

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Checking the connectors
Check control module connector A. Check for a short-circuit to ground. See Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault. Check for contact resistance and oxidation. See Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Remedy as necessary.

Other information:
- To connect the breakout box, see Connecting the convertible control unit breakout box Connecting the Breakout Box
- To access or replace the control module see Replacing the control module Service and Repair.









Select Continue when the fault has been remedied.

Continue - Verification

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Verification




Verification

Hint: After the repair it is necessary to check that the fault has been rectified.








- Ignition off
- Connect the connectors, install the components, etc.
- Ignition on
- Apply parking brake
- Close the luggage compartment lid
- Speed < 4km/h.
Operate the control switch to move the convertible top.
Move the convertible top to its end positions.

Does the convertible top work?

Yes - VERIFIED

No - VERIFICATION FAILED

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VERIFIED - FAULT FOUND

VERIFICATION FAILED - 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 micro-switch

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