Upshifts & Torque Converter Clutch Apply Check

NOTE: The PCM calculates upshift points based on two inputs: throttle angle PD01 (TP sensor) and vehicle speed PD12 (MPH). The on-board mode should be used to monitor throttle angle.







1. Place shifter in D4, then look at the shift speed chart and choose a percent throttle angle of 15 or 20.

2. Set up on-board display to monitor throttle angle, then accelerate to and hold chosen throttle angle.

3. As transaxle upshifts, note shift speed for 2nd, 3rd and 4th gears. Shift speeds may vary due to slight hydraulic delays responding to electronic controls. Note when TCC/VCC applies. This should occur in 3rd or 4th gear. If apply is not noticed by an RPM drop, refer to "TORQUE CONVERTER CLUTCH (TCC) DIAGNOSIS" section. TCC/VCC should not apply unless transaxle has reached 18°C TRANS TEMP and engine coolant temperature of 60°C.




4. Repeat Steps 1 through 3 using several different throttle angles. In PCM data mode, refer to Status Display for monitoring TCC shift solenoid.