hi Steve here again,
I have just been out to my babe and opened tailgate while she was locked, pressed button and tailgate opened and alarm went off then realised I had not pressed fob to unlock car as all doors were still locked..
why would tailgate open when rest of car is locked????
cheers Steve
There are only 3 reasons why the tailgate would open with the rest of the car locked.
1) a failure in the RHF latch with the CDL switch, which is keeping contact with the door latch shut (the tailgate motor grounds through the CDL switch - and usually this is disconnected when the vehicle is locked
2) someone previously has bypassed the CDL switch and wired the tailgate motor to ground permanently so it will always operate whether the rest of the vehicle is locked or not
3) One of the wires from the tailgate motor has rubbed through the insulation somewhere and is now shorting to the bodywork again providing the grounding path for the tailgate motor.
I've put up a document about testing the door latch switches - but the other 2 - you will have to have a look at the vehicle wiring to see if there is an issue with them..
Hope this helps,
Marty
Hi Marty, thanks for reply ive had her for nearly 3 years and never noticed it before and I keep tools for work in her so I think I would of. also drivers door has stopped opening on button I have to use key but all others open. thanks again Steve.
If the drivers door lock has stopped working on the remote, then chances are that the problem with the tailgate lies there aswell.
I've posted up door latch tests in a downloadable document, so worth checking that. If it's just the door lock that has stopped working, then it is likely to be an isolated issue with the door latch or wiring from the outstation to the latch. If the window and mirror have mysteriously stopped aswell, then it could be a problem in the wiring to the outstation, as the window, latch, and mirror information are all transmitted on a serial link from the BECM to the outstation, and this then sends the individual commands to the latch, window and mirror...
But if either the window or mirror are working, then the serial link is OK, and the issue is isolated to the latch itself or the short bit of wiring loom from the outstation to the latch.
Hope that helps,
Marty