MVS Forums superuser and ABS expert Matty Moo lays out these facts in trying to solve a particularly vexing ABS module mystery:
- The 8619538 module works on other pre-CEM.
- The other STC modules don’t want to work on CEM cars with the 8619538 module.
- I’ve had no problems like this on the non-CEM cars.
- You can put an AWD module on a pre CEM car with STC and it will work, along with the regular STC module.
- 8619538 module is soldered differently than all of the other Teves MK20 modules. You can open one up and see zero cracking on any of the pins, even using a magnifying glass. The only cars I’ve seen this module on is the CEM cars.
Jtnb »
OK, here’s an update. Problem still exists.
Bought a remanufactured ABS unit from BBA Reman in Taunton, Mass. That’s a known good unit. Same exact part number. I now owe them my unit as a core. Did the changeover (I can now do it in about 9 minutes.)
NO CHANGE!
Even with the re-built computer I still have the array of idiot lights: ABS, STC, ABS Service Required. Does anyone have any thoughts?
Graham, I will take a look at the brakes. I think the fronts are pretty far gone. Was planning to deal with pads and rotors when the weather warms up again… march or april. Might have to accelerate that process.
Any further thoughts on this would be most helpful.
jimmy57 »
I have begun to see two pump motor issues:
- the wire insulation falls off the short two wire lead from pump. I have not had a car with a code but in handling the module I have gone to unplug the pump and the wires were already missing pieces of the insulation and copper was visible.
- I dealt with a 2001 S60 that had a dead pump motor. Would set codes intermittently for the pump motor after repair to module and module repair was rechecked and the problem continued. The motor was test run and ran twice and then the third time it did not until the motor was tapped. Apparently worn out or stuck brushes.
#1 might cause the ABS module to go down at times and set codes like are seen in that car. The pump is variable speed controlled on MK20 and is powered through transistor circuit so it would not necessarily blow a fuse even if shorted but may drop voltage within circuitry of ABS module and take it offline until network “sleeps” several minutes after key off and last door or hatch closed. The wires may have been fine until handled for module changes.
01 V70 ABS Failure: Module NOT the problem
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3 Comments
I just purchased a 2002 v70 2.4t that has the ABS warning in my information center and the ABS light on the right on permanently. What do I need to purchase for an 02 model? They are different than the earlier models correct? Thanks Joe in Ga
Hi, can you tell me if the 8619538 CEM module be repaired. i open mines up and checked it even with a magnifying glass and did see any cracks. When to the dealer today, drove over 165 miles to let the them check but they assured me it was the ABS module causing the ABS liight to be om. Now I have two troubles the flywheel is out. I am in need of a fly wheel and module. I have a 2000 volvo nonturbo S80 with 2.9 litre. If you can help me, I will appreciate it.
you have to take the abs unit off
saw it apart look att the two conections were the wire with only two conectors are atachet
on the electronic card you will find that the one or maybe both conections are broke
you need to take youre led warmer to make the tinn get together again seal it upp with
silicon and mount it back and wola you have fixt it to zero cost