Do you have voltage at the black / white stripe wire at the KD switch under the pedal? Yes the switch does go bad, but
I would verify source voltage first.

You can test with the ignition on.

Power at wire, jump black/ white stripe wire to black wire at the switch/ pedal,
Disconnect black wire at the KD solenoid, passenger side rear of the transmission
If you have no voltage at that wire, check for a break in the wire. Voltage at wire,
KD switch defective, KD solenoid defective or Valve body.


Some thing I found odd, while looking at the wiring schematic, the AC compressor module showed
the kick down relay as an integral (inside) part of the module.