Just bought a 99 cobra love it! but i cant turn off the tracion control! Ive pushed the button many times and it still doesent disable! Also the TC button does not iluminate whatsoever! is it the switch? fuse? I need to figure it out because it really sucks! thanks!
Just bought a 99 cobra love it! but i cant turn off the tracion control! Ive pushed the button many times and it still doesent disable! Also the TC button does not iluminate whatsoever! is it the switch? fuse? I need to figure it out because it really sucks! thanks!
Mine worked backwards I thought because it's lit by default, but when I used my tuner to disable it, it came on just for a sec or 2 but then turned off when the car started. Do you have a hand held tuner ? If so, you can use it to turn it off/disable it. Mine did anyway. Disabled rev and speed limiter as well because I had mods that safely allowed me to increase the rpms a bit. Otherwise I'd of just disabled the speed limiter and left the rev limiter on since it could damage the internals of course, sorry we all know that, never mind. I sold that Mustang though. My 98 svt cobra doesn't have it.
Since both the Illumination and the TCS are affected, I would focus on connector C301.
Disconnect C301 and read the resistance towards the TCS switch of the WH/LG and TN/WH wires. Should be open. Depress the switch should close the circuit. If not, the switch is bad.
Also try injecting +12 volts to the TN/WH wire with the motor running. This will simulate pressing the button. This should activate the dash light. If not, there are bigger issues.
Measure the key off resistance to a known good ground of the body side Black wire. Should be low.
Confirm if +12 volts at the LB/RD wire with the parking lights on. If no power, there is a fault in the Illumination circuit.
If power, likely the bulb is bad.
OBTW, the light is part of the Illumination circuit. It should come on when the head lights/parking lights are on (not when TCS is disabled).