Upshift Control and Torque Converter Clutch (TCC) Apply

UPSHIFT CONTROL AND TORQUE CONVERTER CLUTCH (TCC) APPLY
With gear selector in Overdrive (D), perform the following steps:
1. Refer to "Shift Speed" and choose a throttle position of either 10% or 25%.
2. Monitor throttle angle and vehicle speed with Scan tool.

IMPORTANT: Shift speeds may vary due to slight hydraulic delays in responding to electronic controls. A change from original equipment tire size also affects shift speeds.

3. Accelerate to chosen throttle angle. Hold throttle steady.
4. As transaxle upshifts, note shift speed and commanded gear changes for each of the following gears:
- 2nd gear
- 3rd gear
- 4th gear

IMPORTANT: The Torque Converter Clutch (TCC) should not apply unless transaxle has reached a minimum operating temperature of 8°C (46°F) Trans Temp and 50°C (122°F) Engine Coolant Temp.

5. The Torque Converter Clutch (TCC) should apply in Fourth gear. Note when TCC applies. A RPM drop will occur when TCC applies.
6. Repeat steps 1-5 using several different throttle angles.