Checking Signal From Tailgate Switch

Checking signal from tailgate switch

Checking the signal from tailgate switch




- Ignition on.
- Trunk lid/tailgate closed.
Read off the tailgate switch status.
The value should be high when the tailgate is closed.





Is the value HIGH?

Yes - No Fault Found

No - Checking for a short-circuit

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Checking for a short-circuit
Check the cable between VGLA control module #A19 and trunk lid/tailgate lock unit terminal 1 for a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.









Were any faults found in the cables?

Yes - Verification

No - Replacing component

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Replacing component
Replace the trunk lid lock unit according to Replacing the lock unit on the tailgate, electric switch or motor (2/4-door). Service and Repair

Select "Continue" when this has been done.

Continue - Verification

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Verification

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








- Ignition off.
- Reconnect connectors, reinstall components.
- Ignition on.
- Trunk lid/tailgate closed.
Read status for the door switch in the tailgate/trunk lid.
The value should be HIGH when the trunk lid/tailgate is closed.





Is the value HIGH?

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 - Checking the signal from tailgate switch

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