Rear Wheel ABS Sensor to ECU Wiring Diagram

Tiny
SATURNBUSTEDGOOD
  • MEMBER
  • 2001 SATURN SL1
  • 256,000 MILES
I have the dash ABS light on steady. It has been on for months. During a visit to a dealership today to attempt to get the State vehicle inspection, they said the code indicates the left rear ABS wheel sensor circuit is faulty. I want to check the wiring from the ABS controller connector in the engine compartment to the wheel sensor connector verify continuity before I replace the rear hub that contains the speed sensor.

I need a diagram that shows which two pins on the engine compartment ABS controller run to the left rear wheel sensor. I can take it from there. Thanks.
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Saturday, August 24th, 2013 AT 3:22 PM

4 Replies

Tiny
SATURNTECH9
  • EXPERT
I have a easier way to see if you have a bad speed sensor take a ohms meter measure the ohms value across the two pins on the speed sensor then compare them to the right rear speed sensor. That's what I do before I start tracing wires etc. Let me know what you find if you need more help or info I am here for you.
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Saturday, August 24th, 2013 AT 5:13 PM
Tiny
SATURNBUSTEDGOOD
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Above reply answers a different question than the one I asked.
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Saturday, August 24th, 2013 AT 11:50 PM
Tiny
SATURNTECH9
  • EXPERT
No it doesn't maybe I didn't word it right I ment to say measure the ohms value of the left rear wheel speed sensor across the two pins of it. Then compare those readings to the right rear wheel speed sensor across the two pins of the sensor. That will test the left rear wheel speed sensor before going thru the hassle of checking the wires from the. Speed sensor to the abs computer. The wheel speed sensors usually read as a open when they test bad.I'm not trying to not answer your question I'm just helping you narrow down the problem before you have to go thru the hassle of checking the wiring. Even if the wires test good you would still have to eliminate A terminal tightness connection issue bad wheel speed sensor or bad abs computer. Which I haven't seen many bad abs computers on those cars.
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Sunday, August 25th, 2013 AT 12:47 AM
Tiny
SATURNTECH9
  • EXPERT
Also check for play in the hub that can set wheel speed codes also. Let me know what you find.
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Sunday, August 25th, 2013 AT 12:55 AM

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