Speed sensors - in differential
Thread Starter
Racer
Joined: Jun 2019
Posts: 457
Likes: 54
From: Dallas, Oregon
Speed sensors - in differential
So my code breaker guy says the vehicle speed sensor in the differential is not giving consistent readings; I should replace it, as it's a part of the ABS. However, before I could buy one, another guy mentioned that the ring the sensor reads can go bad also. Anyone else have any experience with this sensor or ring? Your help is appreciated............................. .........Dan
Tech Contributor
Joined: Dec 1999
Posts: 32,910
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From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
The ABS uses the Wheel Speed Sensors on each wheel hub for ABS/AH computation. The DIFF sensor is for the Speedo. Is the speedo working properly?
I would check the wiring harness /connector before I replaced the sensor. Pull it out and make sure that it is not dirty (covered in metal filings)
The reluctor inside the diff is bullet proof. No worries there.
If the sensor wiring and connector are checked sat, replace the sensor.
I would check the wiring harness /connector before I replaced the sensor. Pull it out and make sure that it is not dirty (covered in metal filings)
The reluctor inside the diff is bullet proof. No worries there.
If the sensor wiring and connector are checked sat, replace the sensor.
Thread Starter
Racer
Joined: Jun 2019
Posts: 457
Likes: 54
From: Dallas, Oregon
I understood the differential mounted sensor to contribute to the ABS also. But, yes, the speedo seems to work fine. He cleared the code (C1743) and we drove around for a mile or two, then checked again to find that it had reset and was coding again. I agree that the ring has to be pretty bullet proof. Another had suggested checking the connections prior to replacing the sensor, and that's on the calendar for about 2 weeks from now. Thanks for your thoughts!
