Torque Converter Clutch: Testing and Inspection

Chart C-8 (1 Of 2):

Chart C-8 (2 Of 2):

VCC Circuit:

DESCRIPTION:

The Viscous Converter Clutch (VCC) solenoid is energized when the ECM applies ground to CKT 422, "VCC Solenoid Circuit". The power for the VCC solenoid comes from the 15 amp, fuse #7 in the fuse block, and flows through the VCC brake switch to pin A of five-way connector on the transmission. At pin A, current flows into the transmission to the VCC solenoid and then returns to ground through the ECM.

NOTES ON FAULT TREE:

1. Checking for continuity from brake switch through solenoid coil to CKT 422.

2. Checking for ECM to ground CKT 422.

3. Checking for VCC to apply using the ECM override. If VCC does not apply.

4. VCC electrical system is operating properly.

5. Checking for voltage coming from ignition switch to fuse.

6. If resistance measurement is infinity (open), either VCC solenoid or associated wiring inside the transmission needs to be repaired.