Can't find my RWAL diagnostic connector
#1
Can't find my RWAL diagnostic connector
Hello All,
I have a 1995 conversion 2500 van, the ABS light is permanently on so I would like to run the diagnostics to find the problem. According to the Chilton manual I need to ground the diagnostic connector that is located behind the lower right cowl panel.
I assume this is referring to the plastic panel on the right of the passenger side under the glove box, but there is nothing electrical at all under there.
I found a few hits on Google which indicated that the module might be under the glovebox plastic insert, or near the parking brake pedal, but I cannot find it!
But I don't actually know what I'm looking for, does anybody know where the module is, and what the diagnostic connector looks like?
Thanks,
Ben
I have a 1995 conversion 2500 van, the ABS light is permanently on so I would like to run the diagnostics to find the problem. According to the Chilton manual I need to ground the diagnostic connector that is located behind the lower right cowl panel.
I assume this is referring to the plastic panel on the right of the passenger side under the glove box, but there is nothing electrical at all under there.
I found a few hits on Google which indicated that the module might be under the glovebox plastic insert, or near the parking brake pedal, but I cannot find it!
But I don't actually know what I'm looking for, does anybody know where the module is, and what the diagnostic connector looks like?
Thanks,
Ben
#3
Ah, thank you! That's very helpful, I can see that my van does not have the control board or the diagnostic connector in that location. Can I assume from this then that I was mistaken and it actually doesn't have RWAL brakes at all?!
The presence of the ABS light, an ABS maxi fuse under the black box near the radiator, plus some sort of ABS valve arrangement connected to the master cylinder does point to it having ABS though - does this mean I have the 4-wheel version of the ABS? And would I be right in thinking that with this version the only way to get the diagnostics from this system is using a scan tool?
Thanks,
Ben
The presence of the ABS light, an ABS maxi fuse under the black box near the radiator, plus some sort of ABS valve arrangement connected to the master cylinder does point to it having ABS though - does this mean I have the 4-wheel version of the ABS? And would I be right in thinking that with this version the only way to get the diagnostics from this system is using a scan tool?
Thanks,
Ben
#6
The ABS module behind the glove box is there only if you have 4-wheel ABS. The picture you posted shows that you have RWAL. With RWAL there is no ABS pump, only pressure release solenoid valves. That's those two round/cylindrical items (one above the other) just to the right of the master cylinder in your picture. Just to the right of those is the proportioning valve. The RWAL controller is usually found under and slightly behind the battery area.
#7
OK thanks for the info. I had a look around the battery area, but can't see anything that looks like a control module or a diagnostic connector. I did have a look at the front wheels though to see if there is a wheel sensor (sorry the pic is a bit out of focus):
I can see two lines going to the wheel, I assume the one on the right is the brake line, but is the one on the left a wheel sensor or something else? I thought the RWAL brake system only had a single sensor on the differential?
Thanks,
Ben
I can see two lines going to the wheel, I assume the one on the right is the brake line, but is the one on the left a wheel sensor or something else? I thought the RWAL brake system only had a single sensor on the differential?
Thanks,
Ben
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