For 1990-2009 cars

Condition | Action
--- | ---
DEFINITION: Torque converter clutch stuck on or no lock-up
Park/neutral position switch (72) | Replace park/neutral position switch (72).
Vehicle brake switch |

• | Inspect for operation of vehicle brake switch.

• | Replace brake switch if faulty.

Transmission control module | Inspect for proper function of TCM and replace if faulty.
Transmission oil temperature switch (32) |

• | Perform function check on the transmission oil temperature switch (32).

• | Replace the automatic transmission wiring harness assembly (78).

Lock-up control solenoid (SLU) (310) |

• | Perform electrical function check on the lock-up control solenoid (SLU) (310).

• | Replace the valve body if the lock-up control solenoid (SLU) (310) is faulty.

Torque converter (1) | Replace the torque converter (1).
Valve body (39) | Replace valve body (39).