Torque Converter Clutch (TCC) Solenoid (1.9L)

1. Disconnect transaxle harness connector. Using DVOM, measure resistance between TCC solenoid terminals "E" and "K". See Fig 1. If resistance is not 3.5-6.0 ohms, go to next step. If resistance is 3.5-6.0 ohms, check for poor terminal connection at transaxle harness connector. Repair as necessary. If connection is okay, replace PCM.
2. Remove TCC solenoid connector plate. Using DVOM, measure resistance between TCC solenoid terminals "E" and "K". See Fig 1. If resistance is less than 4 ohms, replace TCC solenoid. If resistance is greater than 4 ohms, replace TCC solenoid connector plate.

Fig 1: Torque Converter Clutch (TCC) Solenoid Circuit Schematic (1.9L)

Courtesy of GENERAL MOTORS CORP.