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Eric, Automotive Repair Shop Manager
Category: Australia Car
Satisfied Customers: 31935
Experience:  Automotive Repair Shop Manager, Technician/JA Mentor
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What happens to the re4r03a if the tcu is not connected

Customer Question

what happens to the re4r03a if the tcu is not connected
Submitted: 1 year ago.
Category: Australia Car
Customer: replied 1 year ago.
what is the best place to buy a stand alone harness for the tcu or where can i best see schematic for the tcu wiring diagrams
Expert:  Eric replied 1 year ago.


If you are referring to the Transmission Control Unit, the transmission will not shift out of 1st gear without it. As to wiring diagrams, I will need the vin number to see if If have that one for your vehicle. For standalone harnesses for the TCU, it will have to be custom made.

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