Operation CHARM: Car repair manuals for everyone.

Functional Test

1. Install a tachometer and a TECH 1 or equivalent scan tool.

2. Start and run engine until it reaches operating temperature.

3. Drive vehicle at 50 - 55 mph using light throttle pressure.

4. Maintaining throttle, lightly touch brake pedal and check for release of TCC and a slight increase in engine RPM.

5. Release brake, then slowly accelerate and check for re-apply of converter clutch and a slight decrease in engine RPM.