My rear brakes lock up on me and I'm thinking it has to do with the abs light staying on. I have an abs code #10. It says sensor wire low resistance. So i pulled the wire and checked it and I'm getting less than one ohm on each wire. I'm assuming this is the problem. How do I fix it? I read in the sticky that new wires can be soldered into the connectors but I don't know what wire I'm supposed to use. I'm assuming i need a resistor wire, but how much resistance?

Thanks in advance.

Jake

 

No, that means the wires are shorted together or the sensor is fried.

 

I put a new sensor on it. I pulled the whole wire harness out. So its not hooked up to anything. And I check each wire separately on each end and I got .5 ohms. Then I checked them together and there was not continuity between the two.

 

Any other ideas?

 

Not shorted to ground either? That code means just what it says, that the resistance across the sensor circuit is too low. If there's nothing wrong with the sensor or the circuit, then the RWAL box is bad.

 

I don't know about being shorted to ground i'll check that. I thot I read in the sticky about the wire harness from the frame to axle goes bad and its over 100 bucks from dodge. It also said that if you can solder then, you can put new wire in the old connectors. So does the code mean that there is low resistance in the sensor itself or in the wiring? (im sure you know this but) This is what it says in the sticky "10-Sensor wiring/resistance ( usually low reading)" I take that as the wiring has low resistance, which is what i found when i pulled that harness out and checked each wire and it read .5 ohms. Am I wrong? If that is the problem, then I need to figure out what the resistance should be and I'll just wire in a resistor with the correct ohm range. I also figured that if the dump valve was bad, then it would also throw a code right? Maybe I'm wrong there too. I think I need to get a complete service manual on this truck. Thanks again.

Jake

 

Ok both wires running down the frame have continuity to ground. At the plug I checked each wire separately and they both have no resistance when touched to ground and obviously the same when I checked the wires together. So somewhere in my circuit it's grounded out. I followed the wires through a wire loom up to behind the dash and then I lost them. Is there a wiring diagram for this? Thanks.
Jake

 

The wires themselves should have NO resistance to speak of. The resistance the RWAL box is looking at is for the whole circuit, sensor included. Low resistance means that the wires are shorted out or the sensor is bad, high resistance means that there is a bad/disconnected connection or wire, or the sensor is bad.

My guess is that the harness is chafed or pinched somewhere.

Wiring diagram in the sticky. It's not for your year but the RWAL is the same.

 

Low resistance (high OHM value) is of each wire is normal. No resistance is a broken wire. High resistance (low OHM value) in the wire means a short to ground. The sensor should fall within certain parameters. I don't know if the specs are in the FSM or not, but I will look it up. I have an ABS light on too but I think my sensor is either covered with metal shavings from my last rear diff chernyobl or it is bad. Just keep forgetting to pick one up.

 

Don't you mean low ohm value? Mark

 

Ooops. Thanks for the correction. Been a long week...

 

Been there, done that, way too many times to count...Mark