Code 39, TCC Circuit (3.8L): Notes

Code 39 will set when TCC is commanded on, vehicle speed is greater than 35 MPH, throttle angle is greater than 10 percent, vehicle is in 3rd or 4th gear, Engine RPM-to-vehicle speed indicates TCC is not locked and all conditions have existed for more than 10 seconds. Code 39 does not turn on SERVICE ENGINE SOON light.

1. With ALDL test terminal grounded, PCM provides a ground for solenoid. This step tests for power to solenoid.
2. Tests to see if problem is faulty solenoid, power supply or driver circuit.
3. Tests TCC solenoid driver circuit at PCM.