Torque Converter Clutch (TCC) Solenoid
See MISCELLANEOUS ECM CONTROLS .
Disconnect harness connector to TCC solenoid. Measure resistance between TCC solenoid terminals. (Scheme 1)- (Scheme 2). Solenoid resistance should be greater than 20 ohms.
Scheme 1
Scheme 2
Note. Some solenoids have an internal pressure switch in series with solenoid winding and will not show continuity until transmission hydraulic pressure is applied.