Checking The Signal From The Trunk Lid Inhibitor

Checking the signal from the trunk lid inhibitor

Checking the connector and cable








- Ignition off
- Check control module connector A. Check for a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault. Check for contact resistance and oxidation Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault
- The convertible top must be at one of its limit positions
- Disconnect control module connector A.
Connect an ohmmeter between control module A3 and ground.
Test for a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Connect an ohmmeter between control module A3 and relay 1 (trunk lid inhibitor).
Test for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Try a new relay if no faults are found.
Remedy as necessary.

Other information:
- To access and replace the relay (trunk lid inhibitor), see Relays in passenger compartment central electrical unit, Convertible
- To access and replace the control module see Replacing the control module Service and Repair
- To connect the breakout box, see Connecting the convertible control unit breakout box Connecting the Breakout Box.









Select Continue when the fault has been remedied.

Continue - Verification

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Verification




Verification

Note! After carrying out the repair, check that the fault has been remedied.








- Ignition off
- Reinstall components, reconnect connectors etc.
- Speed < 4 km/h
- Trunk lid closed
- Ignition on.
The convertible top must be at one of its limit positions.
Check that trunk lid can be opened with the switch.
Close the trunk lid.
Activate the control switch for convertible top operation.
Operate the convertible top slightly.
Check that trunk lid cannot be opened with the switch.

Does the convertible top function correctly?

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 connector and cable

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