Checking The Tailgate Central Locking Motor

Checking the tailgate central locking motor

Activating lock motor




- Ignition on.
Activate central locking motor in tailgate.





Is the tailgate central locking motor activated?

Yes - No Fault Found

No - Checking the connectors

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Checking the connectors




- Disconnect the VGLA control module according to Replacing the control module Replacing the Control Module.
- Remove the tailgate interior trim.
- Check VGLA control module connector and tailgate lock unit connector for contact resistance and oxidation according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
- Ignition on.
Activate central locking motor in tailgate.
If the tailgate central locking motor is activated it means that the cause of the fault has been loose connections in the connectors.





Is the tailgate central locking motor activated?

Yes - FAULT FOUND

No - Checking cables

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Checking cables
Check cable between VGLA control module #A14 and terminal 2 of tailgate lock unit connector and cable between tailgate lock unit connector terminal 4 and ground for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.









Was a fault found in the wiring?

Yes - Verification

No - Replacing component

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Replacing component
Replace lock unit in tailgate according to Replacing the lock unit on the tailgate, electric switch or motor (2/4-door) Removal and Replacement.
These repair instruction also apply to C 70.

Continue - Verification

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Verification

Hint: After carrying out the repair check that the fault has been remedied.








- Ignition off.
- Reconnect connectors, reinstall components.
- Ignition on.
Activate central locking motor in tailgate.





Is the tailgate central locking motor activated?

Yes - FAULT FOUND

No - Fault-tracing information
No 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 - Activating lock motor

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