A/T - A140E Testing Solenoids For a Restriction

TSB 89-24 (Sept.)

SUBJECT: TOYOTA A-140E

PROBLEM:
Early, stacked shifts at medium to heavy throttle, Wrong gear starts at medium to heavy throttle. (Works normal at light to medium throttle)

CAUSE: Solenoids may be partially restricted

SOLENOID TEST:
An easy way to test the solenoids is to raise the drive wheels, run the car with the gear selector in 2nd (both solenoids are energized), and then pull the TV cable all the way to maximum pressure.

(Note: Anytime you are checking maximum pressures, make sure engine rpm's are at least 1,000 to 1,200 rpm's).

After pulling the cable, if the transmission shifts to first gear, then the # 2 solenoid is restricted.

If it shifts to 3rd, then the # 1 solenoid is restricted. If it shifts to 4th, then both solenoids are restricted.

The # 1 solenoid is the one with one mounting bracket, and it is connected to the white wire.

The # 2 solenoid is the one with two mounting brackets, and it is connected to the black wire.

Note
This procedure also works with the A43DE, the A-340E and the A240E.