Introduction
This guide will show you how to repair your 1984-1989 Toyota 4Runner / Truck’s ECU’s return to battery cable. Sometimes while off-roading the battery can come loose, which can then tug on the ECU’s return to battery cable. If this cable is severed, the truck will not run.
View this How To Guide on soldering if you need any more tips for this part of the guide.
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Disconnect the ECU and positive cable by using your 12mm wrench to loosen the bolt on the battery's positive terminal.
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Once the cables are disconnected, place the positive cable out of the way.
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To reassemble your device, besure to place the positive cable down first. Then place a washer between the cables. Place the last washer on top of the ECU cable, then bolt down.
To reassemble your device, besure to place the positive cable down first. Then place a washer between the cables. Place the last washer on top of the ECU cable, then bolt down.
Un commentaire
Hello ; I need help fixing my ECU it over heats and disconnects the data lines from the other computers in the car leading it to not start or start and fail and I cannot replace it without the data on the original ECU
If anyone knows a trick on how to copy the data from the ecu or fix the power issue please feel free to contact me at amd13@windowslive.com or via mobile+9665633330544
Regards
Ali Al Dawood
And thanks for the tips they were helpful I managed to shift gears but not start the car
Much appreciated