Broken power connector for 1996 Volvo 850 ABS Control Module

kcanmoore · Post by **kcanmoore** » 16 May 2019, 10:58

The code reader said the ABS Control Module was faulty and I ordered a new one online. After locating and buying an E5 external torx socket, I followed the instructions on this site and removed the old module. I didn't notice until I was about to reconnect the power connector, but the plastic plug slipped off of the round metal clips that fit on the two posts (the plug is not in very good shape) and I cannot determine which wire goes on which post in order to prevent a short-circuit to the new module, or worse, to the onboard computer. The posts are identical and not color-coded. Any suggestions?

Post by **Ozark Lee** » 16 May 2019, 21:38

If you get them backwards it won't short anything out, the pump motor will just run backwards. It is a 50/50 crapshoot but I can't think of any damage that would be caused by being on the losing side of the bet.

...Lee

Post by **manovlov** » 16 May 2019, 21:48

Are the wiring the same long size ? Is it possible to see on a wiring diagram which goes or come from where to where ?

When plugged, switch ignition on and read codes again ? Maybe the issues will be seen..

Manov (newbie)

GrumpyOldMan · Post by **GrumpyOldMan** » 18 May 2019, 01:37

Hope this helps.

I had to rebuild my abs module.
Been dreading that as the pump wires insulation was perished to begin with.

Removed the abs module and what was left of the insulation disintegrated.

Pulled the pump cap off so I could re-sleeve the wires best I could.
Cleaned the wires (one at a time).
Pushed white heat shrink as far into the body as I could.
Sleeved the rest of the wire with the correct colour shrink.
Pushed a bit of silicon into the the cable entry on the pump body to try and stop the wires from rubbing or shorting.

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Refitted the 'plug'. Although more for looks than any practical use.

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Pushed the pump terminals onto the module pins.
Slide the plug body over the top for appearances.

A month later and it all still seems to work fine.

Was a fun job :/

850oldschool · Post by **850oldschool** » 13 Apr 2021, 11:47

The insulation on the power wires of my abs pump is in similar condition and I need to do this. I tried grabbing the black plastic cap on the motor and it wouldn't budge. Are there any latches or fasteners? Also, it's a bit tempting to remove the two screws holding the motor in place and do this on the workbench, but maybe there's a reason I haven't seen it done this way? And finally, there's no mention of depinning procedure, apparently they just fall out of the connector shell?

850oldschool · Post by **850oldschool** » 16 Apr 2021, 20:14

Basically what I need to know here is if there are any tips or tricks to getting the black plastic cover off without breaking it, and if removing the two screws on top of the motor will help me at all with the task of re-insulating the wires or, alternatively, totally ruin my pump.