Faulty Signal. Permanent Fault

Faulty signal. Permanent fault

Checking the cable




- Ignition off
- Visually check the control switch.
Check the control module connector A for a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault. Check for a short-circuit between A9 and A10.
Connect an ohmmeter between A9 and A10 in connector A. Check for an intermittent short-circuit between the cables.
If a short-circuit is found, check the control switch connector for a short-circuit between terminal pins 3 and 6.
Disconnect the control switch.
Connect an ohmmeter between the control switch 3 and 6. Check for a short-circuit.
Replace the control switch if a short-circuit is found.
If there is no short-circuit in the control switch, the fault is in the cable between the control module and the control switch connectors.
Remedy as necessary.

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













Was a short-circuit found?

Yes - Verification

No - Checking components and wiring

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Checking components and wiring




- Ignition off.
Connect an ohmmeter in turn between A9 and ground and between A10 and ground. Check for an short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
If a short-circuit is found, check the control switch connector for a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
- Check the function of the control switch.
Connect an ohmmeter in turn between control switch 3 and ground and between 6 and ground. Check for a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Replace the control switch if any of the control switch contact breakers are constantly closed or there is a short-circuit to ground.
If there is no short-circuit to ground in the control switch, the fault is in the cable between the control module and the control switch connectors.
Remedy as necessary.

Other information:
- To access and 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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VERIFICATION FAILED - Fault-tracing information

VERIFIED - FAULT FOUND

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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 cable

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