Luggage Compartment Illumination Switch

Fault Diagnosis, Luggage Compartment Illumination Switch:

Fault symptom
Tailgate disconnected from alarm.
LED flashes during delay period.

Action
1 Check if the switch is working with open/closed tailgate
Check the normal function. With open tailgate, the lighting should be on and should be able to be switched off manually using the switch on the lighting unit.
If the function is correct, proceed to point 2. If the function is incorrect, continue fault diagnosis in Electrical System, "Luggage compartment illumination".

2 Check the function, open/close tailgate
Connect the scan tool.
Select "READ VALUES".
Select "TAILGATE SWITCH".
Open/close the tailgate whilst checking the scan tool display.
The scan tool should display "OPEN" and "CLOSED" respectively.
If the scan tool display is correct for open/closed tailgate, proceed to point 4.
If not, proceed to point 3.

3 Check the cable assembly to the control module
Conduct a continuity test on the cable assembly between the luggage compartment switch and the control module, pin 3.
The resistance should be < 1 Ohm.
If the resistance is incorrect, take action on the cable assembly.
If the resistance is correct, proceed to point 4.

4 Final test
Check to see if the fault symptom remains.
If the problem remains, proceed to Before Control Module Replacement.