Riviera V6-231 3.8L Turbo VIN 9 FI (1984)
Fig. 040 - Chart C-8 Transmission Converter Clutch.
1.
A test light on indicates battery voltage and continuity through the TCC solenoids is OK.
2.
The vacuum hose on the throttle shaft pin increases the TPS signal so the TCC will engage, without excessive wheel speed. Without the hose, it
would require more than 65 MPH to engage the TCC.
3.
Checks for vehicle speed sensor signal to ECM. Voltage should vary from under 2 to over 9 volts.
4.
Checks for 3rd and 4th gear signal to ECM. These signals will not present TCC engagement, but could cause a change in the engage and disengage
speed points.
5.
Solenoids are turned "ON" or "OFF" by the ECM internal electronic switches called "drivers". Each driver is part of a group of a group of four
