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Old May 8th, 2014, 11:47 AM   #1
Bones
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Default 2002 superduty ABS module replacement

is this as big of a pain in the ass as it looks like it will be?

I am chasing a wiring/module. I have a CEL, no speedo and ABS light on. CEL is P0500. It's not the VSS on the rear diff. From what I can tell, either the VSS signal isn't getting to the ABS module (I can't confirm that) or the ABS module isn't working (isn't translating the VSS signal into something the PCM can recognise), which is fairly common.

Any tips/tricks?

Vehicle runs great, no shift issues, etc.
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Old May 8th, 2014, 12:31 PM   #2
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Gas or Diesel?
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Old May 8th, 2014, 12:40 PM   #3
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Your VSS wires are red/pnk and lt grn/blk, pins 14 and 6 at the ABS module. You can ohm them and it should be the same as whatever your sensor ohms at...I don't remember right now but normally they are 700-2000 ohms. If that is fine you can hook up a voltmeter to them set on a/c voltage and make sure it increases with wheel speed.

I seem to remember fixing one with corroded wires near the module.

If you have to replace the module it will probably need to be set up with an IDS.
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Old May 8th, 2014, 12:42 PM   #4
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Check the wire harness at the rear diff. If it's not a sensor 9/10 times it in the harness in the fist 12" from the sensor.
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Old May 8th, 2014, 01:44 PM   #5
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Quote:
Originally Posted by hamsmotorsports View Post
Check the wire harness at the rear diff. If it's not a sensor 9/10 times it in the harness in the fist 12" from the sensor.
I did replace the last 12" or so, and the plug.

It is V10 gas
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Old May 8th, 2014, 01:50 PM   #6
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I have seen a few that bad ign. coils/ worn spark plugs will cause no speedo and abs light to come on. Hard to track down what coil it is without a lab scope though. It seems the coils get overworked from worn plugs or a coil just creates to much RF noise and f's with the PCM.
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