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The mkiv Supra Owners Club

Cruise Control Problem


dave barratt

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I have just fitted a full OEM cruise control to my j spec TT AUTO

Actuator CC ECU and steering wheel.

My car has the full wiring loom so it pluged up perfectly.

Trouble is when I engage CC the CC light flashes indicating a fault.

I have removed the speed delimiter.

The fault code is 12 which indicats a fault with the clutch circuit. I have exhausted all the tests as decribed in the workshop manual and everything apears ok. I am an electrician so this was easy for me.

When I short out the pins on the diagnostic plug I noticed that the ABS light also starts to flash.

My questions are :-

 

Could this be a clue?

 

Is there a diffrence in the CC ECU between a manual and an auto?

 

Is there a diffrence between a j spec and a UK spec TT CC ECU?

 

Could the ECU be duff?

I'm out of ideas now so any help would be apreciated

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There are different part numbers between UK and Jap Cruise ECU's.

 

There is also a diferrence for LHD cars too, but I can understand that one for obvious LHD/RHD fixing reasons.

 

88240-14270 is for UK spec ECU

88240-14250 is for Jap spec ECU

 

There is no difference between Auto and Manual versions.

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