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Old 10-18-2023, 11:38 AM #1
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NO SPEEDO - CEL + ABS/VSC Lights (2001-2002 4runners)

before I begin, this thread is a good resource for anyone with this problem. I have ordered a used ABS ECU before I started to troubleshoot because of this thread and because I have a P0500 CEL code...

Speedometer/Odometer Not Working + Related Warning Lights (P0500)



Symptoms: No speedometer, ABS and VSC Lights are ON, E-brake light is on, and CEL light is on


Now, question for the audience: Where can I find ABS trouble codes that can be read through a series of blinks on the dash cluster?

Is this info in the FSM?

After jumping the Ts and E1 terminals on the engine bay diagnostic port, I get a reading of the ABS code via the ABS light series of blinks...


my blinks on the ABS light are:

3 blinks
*pause

3 blinks
*pause

3 blinks
*pause

4 blinks
*pause

4 blinks
*pause

4 blinks
*pause

then sequence repeats....

counting these blinks we get 21 blinks total.

That code apparently is the Right Front Wheel ABS Actuator solenoid circuit...
could be an open or short... which is interesting because that's the same front wheel hub that I suspect has a bad wheel bearing..

and so the fact that the ABS light is flashing tells me that the ABS ECU isn't completely shot, although there could be a failed component inside still

my research shows that when an ABS light is always on (no flashing), means ABS ECU malfunction which would warrant an ABS ECU replacement..





Does anyone have any ideas on this issue?






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Last edited by infamousRNR; 10-18-2023 at 11:43 AM.
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Old 10-19-2023, 10:53 AM #2
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Bought my 01 Feb 17 with this problem ABS light was solid codes directed me to RF speed sensor also.
Used linked thread and FSM to get started, speed sensor tested good using a VOM.
Installed used Module problem gone so it ended there.
Toyota Tech's I know that dealt with this said along the lines if you have
3 4 of 5 conditions regarding lights they'd change module.
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Old 10-20-2023, 10:56 PM #3
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Quote:
Originally Posted by 96RedRunner View Post
Bought my 01 Feb 17 with this problem ABS light was solid codes directed me to RF speed sensor also.
Used linked thread and FSM to get started, speed sensor tested good using a VOM.
Installed used Module problem gone so it ended there.
Toyota Tech's I know that dealt with this said along the lines if you have
3 4 of 5 conditions regarding lights they'd change module.
thanks for chiming in, I did indeed buy a new module like I mention in this thread, I will install tomorrow and report back.


any thoughts here @phattyduck @IBallEngineer @skcolb ?..












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Old 10-21-2023, 12:21 PM #4
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At the time I wasn't sure I wasn't just throwing money at the problem or not based on info and troubleshooting I'd done. Good Luck.
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