New to the forum, looking for input on this van. I have a 2001 Sienna here that has a code p0500. I plug my scanner in and I can view all of the Freeze Frame data and verify that I have no vehicle speed signal. ABS light is on, when I connect TC to E1 in the diagnostic connector under the hood I do not get a flashing ABS light. Instead, after a few seconds of being connected the airbag light begins rapidly flashing in no discernible code. I have already replaced the ABS controller and ECU unit. I have tested all four wheel speed sensors for resistance. I get 985 ohms in the front and 1100 ohms in the rear. I even removed the front sensors and cleaned the rust and debris off. have tested all of the related circuits for continuity and shorts to both power or ground. I have tried another PCM which didn't do anything. In fact they gave me the same p0500 code after a few seconds of test driving. I have tried another instrument cluster, though I suspect that the reason it was laying on my spare parts shelf was due to inoperative speedometer. So I don't really count that as a viable diagnostic at this time. What am I missing? How can I get the ABS light to flash if grounding the pink wire with the black stripe at TC doesn't work? I'm kind of stumped...
Beladona13
01 sienna P0500. No speedo. Can't pull abs codes.
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3 Posts
Any suggestions would be most welcome
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3 Posts
I replace the speedometer cluster with another used one. No luck. To recap, I have changed the speedometer twice, the ABS module and actuator once, and the ECM once. I've tested every circuit that I can think of 4 open circuit, short to ground, short to power, continuity, Etc. I'm about to give up and send it to the dealership ...
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