DTC 47, 48, 49 (Torque Converter Clutch (TCC) Solenoid)

Inspect TCC solenoid. See COMPONENT TESTING  . Replace as needed. If shift solenoid is okay, disconnect TCU connector. Using ohmmeter, check continuity of circuit between TCC solenoid and TCU. See appropriate wiring diagram in WIRING DIAGRAMS  . Repair as needed. If circuit is okay, replace TCU.