Question about 2009 Toyota Avalon

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I have a 2006 avalon with code po500. no speedometer, abs light stays on. dealer changed abs unit with no help. wheel sensors are good. changed speed sensor on trans. where to look now

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Hello Hotrod.

It may be a bad speedometer head/instrument panel if everything else has been checked/replaced
It certainly would be the item I would look into at my shop.

On many Toyota's the signal from the speed sensor goes to the instrument cluster first and then it is changed to a digital signal by the cluster and sent to the ECM. I wonder if they checked the speed signal with a scan tool. This would access the signal at the ECM and should prove this.
This signal would also be sent to the ABS module so it may be the next step.

I hope this helps you diagnose the problem.
Thank you for using FixYa.

KL

Posted on Nov 14, 2010

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Visual Inspection Chart
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Good luck. please rate.

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