C: Torque Converter Clutch (TCC) Solenoid

Test C1:

Test C2:

Test C3 - C4:

Test C4 - C5:

Test C5:

Diagnostic Trouble Code (DTC) List:
P0741 Torque Converter Clutch (TCC) engagement error detected.
P0743 TCC solenoid circuit failure.
P1741 TCC excessive slip detected.
P1742, P1743 TCC solenoid failure.
P1767 TCC solenoid circuit failure.

NOTE: This pinpoint test is intended to diagnose the TCC solenoid electrical system only. To prevent replacement of good components, be aware that the following areas may be at fault:
- Engine.
- Performance, cooling.
- Electrical.
- Battery, input sensors, wiring harnesses, Brake Pedal Position (BPP) switch.
- Transmission.
- Internal transmission components, linkages, cooling.

This pinpoint test is intended to diagnose the following components:
- Transmission wiring harness, TCC.
- Powertrain Control Module (PCM).