A/T - A541E Harsh Upshifts

TRANSMISSION & CLUTCH
TC95-004
AUGUST 11, 1995
ES 300

Title: A541 E ATM SHIFT QUALITY

For customer complaints of harsh shift on '94 ES 300s, the following adjustment will improve 1-2, 2-3, & 3-4 upshift quality.

1. Confirm the customer's shift condition.

2. Check throttle cable adjustment. (Refer to Repair Manual).

3. Adjust the accumulator back-pressure control as indicated below.

A. Drain the transmission fluid.
B. Remove oil pan and gasket.
C. Set the accumulator back-pressure to the lowest position. See illustration.




Note
Depress the accumulator back-pressure plug slightly inward with a screwdriver and turn the plug to the full right position. The plug will then be set to the most protruded position (refer to illustration).

4. Install oil pan with new gasket and refill the transmission with ATF.

5. Reconfirm shift quality after a 30 minute test drive with the pattern select switch at the "NORMAL" position.

Note
Because the ECU must relearn the logic, the vehicle should be driven under typical operating conditions for a full 30 minutes.




WARRANTY INFORMATION: