Part throttle kick down is control by the Bowden cable, no 4t to 3rd try making the cable
Tighter.


Full throttle kick down is control by the KD solenoid.
Fuse #5 powers the kick down solenoid thru the AC compressor control unit.
Key on check for battery voltage at the switch, black / white stripe wire, no power
Check for codes at X11

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 solenoid defective or Valve body.