V70 Body/Trim: - no power to tailgate

rjhunt · Jun 18th, 2019, 09:27

Morning All,
I am onto my fourth V70 now, having a P1 T5, a P1 2.4 and P2 2.5T AWD.
I have acquired a 2002 V70 T5 which mechanically is quite sound for its 168k miles. The tailgate lock was stuck in the locked position. With help from a previous thread, i have managed to get it open from inside, and now it is opens but wont lock. The high level brake light and rear washer motor are also not working. I have checked the fuses in the rear fuse bay, and also the one under the bonnet for the rear wiper motor and relays for these individually, but i suspect that there isn't any power to the tailgate at all. Is there one fault that would cause all these symptoms? I have taken the tailgate trim off and looked for the common fractured wires by the hinge, but it all looks fine. Any help would be gratefully received.
Thanks for the collective wisdom!

XC70Bob · Jun 18th, 2019, 10:12

Your symptoms are classic wiring harness failure in the rear door hinge.

Just looking at the wiring is not enough you need to actually test the continuity of the individual wires, as the insulation can look fine but the wire can be broken within.

There are several posts on this forum about it I suggest you look them up.

pierremcalpine · Jun 18th, 2019, 10:24

Quote:

Originally Posted by XC70Bob

Your symptoms are classic wiring harness failure in the rear door hinge.

Just looking at the wiring is not enough you need to actually test the continuity of the individual wires, as the insulation can look fine but the wire can be broken within.

There are several posts on this forum about it I suggest you look them up.

Agreed. Pull the plastic hinge cover off as well as interior panels and spill off any plastic connectors keeping harness in place then pull out of hinge about 8”. You will find the spot where many wires have shredded.

rjhunt · Jun 23rd, 2019, 17:49

Hi Bob and Pierre,

You were right of course! the red live feed and a couple of other wires had been chewed through about 10cm down from the hinge. Half an hour and a lot of insulating tape later, and power is restored to the lock and washer motor. Feeling pretty smug! Thanks for your help guys

Jun 18th, 2019, 09:27	#1
rjhunt New Member Last Online: Jul 25th, 2020 16:58 Join Date: Feb 2009 Location: Stroud	no power to tailgate Morning All, I am onto my fourth V70 now, having a P1 T5, a P1 2.4 and P2 2.5T AWD. I have acquired a 2002 V70 T5 which mechanically is quite sound for its 168k miles. The tailgate lock was stuck in the locked position. With help from a previous thread, i have managed to get it open from inside, and now it is opens but wont lock. The high level brake light and rear washer motor are also not working. I have checked the fuses in the rear fuse bay, and also the one under the bonnet for the rear wiper motor and relays for these individually, but i suspect that there isn't any power to the tailgate at all. Is there one fault that would cause all these symptoms? I have taken the tailgate trim off and looked for the common fractured wires by the hinge, but it all looks fine. Any help would be gratefully received. Thanks for the collective wisdom!

Jun 18th, 2019, 10:12	#2
XC70Bob XC70 SE lux D5 Last Online: Feb 25th, 2024 14:34 Join Date: Jan 2011 Location: Mansfield, notts	Your symptoms are classic wiring harness failure in the rear door hinge. Just looking at the wiring is not enough you need to actually test the continuity of the individual wires, as the insulation can look fine but the wire can be broken within. There are several posts on this forum about it I suggest you look them up.

Jun 23rd, 2019, 17:49	#4
rjhunt New Member Last Online: Jul 25th, 2020 16:58 Join Date: Feb 2009 Location: Stroud	Hi Bob and Pierre, You were right of course! the red live feed and a couple of other wires had been chewed through about 10cm down from the hinge. Half an hour and a lot of insulating tape later, and power is restored to the lock and washer motor. Feeling pretty smug! Thanks for your help guys

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