1998 S70 Base Model- Central Locking, Fuel door, not working

North42g · Post by **North42g** » 10 May 2014, 06:39

I know I know, this issue has been visited many a times....however, my problem is different....
It all started way back, one hot summers day when all the power windows stop working.
I tried to clean the master driver door switch to no avail. I tried to replace it, again with no success. I did find out however, that if I jump the silver fuse-able relay link located in the UHJB, that I could open and close my windows( barely)...the window would rise about 1/3 to 1/2 the way when the fuse would pop. I could wait till the fuse/relay cooled down then try it again until the window was where i wanted it.

Anyways i j\removed the fuse and jumped (with a 14 gauge wire) the circuit , the windows worked but it melted some wires. So after I replaced both the drivers switch box AND the front passenger window switch the windows all work properly now. However, as a result I have lost control of all power door locks , both with the switch and via the key fob, I have also lost control of the fuel door and Trunk switch. Now SOMETIMES (it isn't predictable though) the trunk will open when when i try to open /close two windows at once. The trunk will also open when I unplug then re plug in the wire harness to the Master Power Window switch.

So I need some helpful information...First if anyone get help me get an accurate wire schematic/ diagram, that would be most helpful. Also, if anyone knows of any COMMON failure points that could hopefully lead me in the right direction? I would really like to get these basic things working again , it getting quite tiresome doing it the old fashioned way!

Post by **Ozark Lee** » 10 May 2014, 09:43

The melted wires might be the source of your problem. They all run through the same harness on the driver's side door. These schematics are a bear to read since you need a decoder ring to figure out the components, and the pagination is all screwed up, but they are dead on accurate on wire colors and junction points.

http://www.volvowiringdiagrams.com/?dir=

...Lee

Post by **abscate** » 11 May 2014, 03:37

..and heat which will melt wires will also start fires...so this should be a pressing repair..

Hey, that rhymes!!

North42g · Post by **North42g** » 11 May 2014, 04:21

It is!(a pressing repair) Very Much So. thank you you guys.
So far, I rewired the the complete drivers door. (which I found to be melted, etc) I went down to the bone yard a and pulled a the whole harness as far back as I could cut, I wanted the OE obviously so i could match wire etc.

koltom · Post by **koltom** » 30 May 2014, 19:13

Any luck on the repair. I got the same problem.