Erratic speedometer will not go above thirty mph

Tiny
BILL STRU1
  • MEMBER
  • 2003 TOYOTA CAMRY
  • 2.4L
  • 4 CYL
  • AUTOMATIC
  • 193,000 MILES
I replaced the output speed sensor, no change. I watched your video on replacing the ABS module, no change. I have replaced the instrument cluster, no change. I did a five hour reset each time. Where else should I be looking? This one has me stumped. Thank you for your help. Bill
Wednesday, May 31st, 2017 AT 6:40 PM

5 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,702 POSTS
Hello,

It sounds like you have some wiring issues or a bad connection. Here is some instrument cluster wiring diagrams (BELOW) and a guide so you can do some testing.

https://www.2carpros.com/articles/how-to-check-wiring

Please run some tests and get back to us so we can continue helping you.

Cheers, Ken
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Saturday, June 3rd, 2017 AT 12:36 PM
Tiny
BILL STRUBLE
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  • 1 POST
Ok i've gone through the wiring, what I can get to.I can't determine what wire is ground at the sensor. The schematic dosen't show ground. If it does it's not labeled.
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Sunday, June 25th, 2017 AT 9:48 AM
Tiny
KEN L
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  • 47,702 POSTS
It is circuit 20 and the ground should be located near the pillar. Its in the second diagram.

Please let us know what happens.

Cheers, Ken
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Monday, June 26th, 2017 AT 9:36 AM
Tiny
BILL STRU1
  • MEMBER
  • 4 POSTS
Ok everything is ohming out correctly voltage checks at sensor are good also. What can I check in the abs side of this. Would a bad abs speed sensor cause this?Also should I have an output voltage to the speedo?
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Sunday, July 2nd, 2017 AT 10:24 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,702 POSTS
A bad wheel sensor can cause this for sure, here is a guide so you can test it. There is no speedometer output though.

https://www.2carpros.com/articles/abs-wheel-speed-sensor-test

Please run this test and get back to us we are interested to see what it is.

Cheers, Ken

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Sunday, July 2nd, 2017 AT 7:05 PM

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