WIS Document: 4035

| | Luggage comparstment lighting switch Fault symptom Tailgate/boot lid removed from alarm system. LED flashes during the delay period. Diagnostic procedure 1 Check operation, tailgate open/closed Check normal operation: | - | the lamp should be on when the tailgate is open and | - | it can be turned off manually by means of the switch incorporated in the lamp. Is the function correct? | yes Continue with point 2. | no Continue fault diagnosis as described in Service Manual 3:2 "Electrical system, luggage compartment illumination". 2 Check operation, tailgate open/closed | - | Connect the ISAT scan tool. | - | Select "READ VALUES". | - | Select "TAILGATE SWITCH". | - | Open/close tailgate while observing ISAT display. The ISAT scan tool should display "OPEN" and "CLOSED" respectively. Is ISAT indicating open/closed tailgate correctly? | yes Continue with point 4. | no Continue with point 3. 3 Check the wiring connected to the electronic 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. Is the resistance correct? | yes Continue with point 4. | no Repair or replace the wiring harness. 4 Final check Check to see if the fault symptom remains. Is the problem still present? | yes See "Before replacing a control module". | no The remedial measures taken were correct or the fault is of intermittent nature.