Remote Control, Tailgate Opening

Fault diagnosis, remote control, tailgate opening

Fault symptom
Not possible to disarm/open tailgate.

Action
1 Check the unlock tailgate function
Connect the ISAT scan tool.
Select "READ VALUES".
Select "TAILGATE LOCK"
The ISAT scan tool should display "CLOSED". Press the right-hand button on the remote control.
The ISAT scan tool should display "OPEN" for about 3 seconds and the tailgate motor should be activated.
If the ISAT scan tool displays "OPEN" for about 3 seconds, but the tailgate motor does not work, proceed to point 2.
If the ISAT scan tool displays "CLOSED", proceed to point 4.
If this works correctly, proceed to point 7.
2 Check the unlock signal from the control module
Unplug connector H22-1.
Connect the test lamp between connector H22-1, pin 4 and a safe grounding point
Press the right-hand button on the remote control.
If the test lamp lights, continue fault diagnosis in "Central locking system/Electric tailgate release". Testing and Inspection
If the test lamp does not light, proceed to point 3.







3 Check the cable assembly
Conduct a continuity test on the cable assembly between the alarm control module, pin 23 and connector H22-1, pin 4.
The resistance should be <1 Ohm.
If the resistance is incorrect, remedy the fault in the cable assembly.
If the resistance is correct, proceed to point 7.
4 Chock the unlocking function
Select "ACTIVATE".
Select "TAILGATE".
Select "ON", and the tailgate motor should be activated.
If the tailgate is not unlocked, proceed to point 5.
If the tailgate is unlocked, proceed to point 6.







5 Check the unlocking function
Unplug connector H22-1.
Connect the test lamp between connector H22-1, pin 4 and a safe grounding point. Select "ACTIVATE".
Select "TAILGATE".
Select "ON", and the test lamp should light.
If the test lamp lights. try changing the remote control.
If the test lamp does not light, proceed to point 7.
6 Check the remote control
Select "READ VALUES".
Select "CONTROL".
Press the right-hand button on the remote control.
The ISAT scan tool should display "RH BUTTON" when this button is pressed.
If the ISAT scan tool displays a different text, try changing the remote control.
If the ISAT scan tool displays the correct text, proceed to point 7.
7 Final test
Check to see if the fault symptom remains.
If the problem remains, proceed to "Before Changing the Electronic Control Module". Before Changing the Electronic Control Module