CODES P0743 P0750 P0755 P0760
2002 Ford Taurus • 182,457 miles
I pulled these codes yesterday. They're electrical codes for the tcc solenoid and the shift solenoids. I was given this car because the previous owner didn't want to put any money into fixing it. I had to reconnect and solder many wires in the main harness coming out of the firewall on the driver side (inner fender) as the previous owner had lost a front tire and proceeded to drive until the rim itself drug down the bumper, inner fender and wiring harness finally bringing the car to a halt. after first connecting the wires with just butt connectors to make sure it would still function, the car started ran shifted perfect but has these codes. i went back today and checked for any stretched or bare wires, cut the butt connectors off and soldered everything back together. After clearing the codes, I start the engine and once again the trans ! light is blinking and the codes come right back up without shifting out of park. Any Ideas???
Ok I think you still have a harness problem see the pics for instructions. code 743 you use pin 7 pos and pin 3 neg and the rest you do as it says to test if solenoids work you have to disconnect at trans. if it testes ok thee you wiring is still screwed up if not the solenoids are inside trans.
With a multimeter reading positive on pin 7 and negative on pin 3 the output reading was 13.8v
You really need a bench tester to complete this not sure if this will work or not but for tcc solenoid see if you get 13-24 ohms ifnot solenoid may be bad and on others see if you can get 15-30 ohms. it may or may not work because it calls for a specialized tool. they may have been damaged also by the fool driving the car like it was. ifnot hook everything back up and have a trans guy scan for codes an dhe should be able to activate hthe solenoids with his scanner.
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