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96 Explorer ABS Code C1194

kjtooltime

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Year, Model & Trim Level
1996 XLT 5.0L
Hi All,

I have a 1996 Explorer with a V8 and 4 wheel disk that has an ABS light that stays on all the time (with Key on only or if the engine is running and vehicle moving).

Using a scan tool, I was able to pull ABS Code C1194 (ABS outlet valve coil LF Circuit Failure). From the research that I did, it seemed to point to the ABS Module. I replaced the module (located in the left fender next to the battery) and the light is still on.

I have also checked the continuity of all the sensors.

What else could be the problem?

Does a new ABS module have to be programmed?

Any help would be greatly appreciated.

Thanks!
 


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swetrid

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1999 Eddie Bauer
If you replaced the abs module, then the HCU or hydraulic control unit would be the problem.
 




kjtooltime

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Swetrid, thanks for your reply.

I found a wiring diagram for the ABS system so this weekend I checked the resistance at the connector to the ABS module of all the sensors and valves of the HCU. I found the Left front dump vale around 6 Meg ohms while the rest of the valves of the HCU were around 10 ohms. So it is a bad HCU. I wish I would have taken this approach instead of blindly ordering the module. Off to ebay to hopefully find a good HCU.
 




Orleans

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Hi,

This is the HCU?

Cannot be repaired?

absy.jpg


Thanks
 




kjtooltime

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Hi Orleans,

Yeah that is the picture of the ABS pump (HCU). I'm sure they are rebuildable since I have seen them at Kragen for around $350. I have not taken one apart but I would like to see what is inside one.

I'm waiting for the one I ordered off ebay. Hopefully it is a good ABS pump.
 




Orleans

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Hi,

Please post the result.

My research appears the module, but I'd rather not risk it. I also have the code C1194


Thanks
 




kjtooltime

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1996 XLT 5.0L
I bought an ABS pump off ebay and that fixed the problem. I plugged in the two connectors of the new pump (before hooking up the hydraulic lines) and the light went out. I wanted to make sure this fixed the problem before swapping pumps.

To check the new pump, one connector has two wires and go to the pump motor. The resistance is around 0.5 ohms (can be checked by placing the ohm meter acrossed each wire connector). The second connector has 8 wires. All the wires are the same color so you have to look at the harness that plugs into the plug to find the Orange with Yellow stripe (there are two wires like this and either one can be used, that leaves 6 other wires to be checked). Now place one ohm meter lead where the Org/yel wire would make contact and measure each other wire that has the same color. You should see about 5 -10 ohms for the six valves inside the ABS pump. I had one of my valves show an open.

If the ABS pump shows good, then it will be either the harness from the ABS pump to the ABS module or the ABS Module is bad.

Hope this helps other with troubleshooting this problem.
 




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