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The mkiv Supra Owners Club

TRC isn`t working and red warning light comes on over 60 mph


Black_Supra

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Hey guys,

 

last year i had no Problems with the car. In the winter i changed the whole speedo Cluster from TRD to a OEM one. I did nothing further to the car so just to let you know ... The car is a Facelift TT6 one.

 

When i started the car this year the TRC warning light startet to flash on and off. The whole time, it doesn`t disappear. The TRC isn`t working.

 

Furthermore the red warning light in the middle of the speedo pops up when i drive over 60 mph and it stays until i turn the car off.

 

I don`t know if the TRC failure correlates to the warning light failure but this seems strange to me. Maybe these are two different failures but I´m not sure.

 

I already readout the error memory with a paperclip but no errors were saved.

 

I realized, that the TRC stepper motor makes a "click" noise around 25-30 times when i start the car with a break between each "click" of around 1-2 seconds.

 

Anybody knows what this could be?

 

A broken ABS sensor or a bad stepper motor or potentiometer at the TB?

 

thanks in advance

Edited by Black_Supra (see edit history)
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55mph is when the active spoiler deploys, do you have/did the car used to have one? Only an idea

 

- - - Updated - - -

 

When you say facelift and stepper motors etc, is your car a VVTI?

 

 

 

Thanks.

 

Yeah, i aleady took a look. Got no active Spoiler but still got the switch.

 

I got a pre VVTI Engine

Edited by Black_Supra (see edit history)
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