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8. Move selector lever to “N” position. I Run engine at idle for at least one minute. 10. Repeat steps 5 through 9 with selector lever in “2”, “1” and “R” positions. JUDGEMENT OF STALL TEST The test result and possible damaged components relating to each result are shown in the illustration. Note Stall revolution is too high in “D” or “2” position: I Slippage occurs in 1st gear but not in 2nd and 3rd gears. ..... Low one-way clutch slippage I Slippage occurs at the following gears: Stall revolution is too high in “R” position: I Engine brake does not function in “1” position. ..... Low & reverse brake slippage I Engine brake functions in “1” position. ..... Reverse clutch slippage Stall revolution within specifications: I Vehicle does not achieve speed of more than 80 km/h (50 MPH). ..... One-way clutch seizure in torque CAUTION: Be careful since automatic fluid temperature increases abnormally. I Slippage occurs in 3rd and 4th gears in “D” position. ..... High clutch slippage I Slippage occurs in 2nd and 4th gears in “D” position. ..... Brake band slippage Stall revolution less than specifications: I Poor acceleration during starts. ..... One-way clutch seizure in torque converter SAT771B TROUBLE DIAGNOSIS — Basic Inspection Stall Test (Cont’d) AT-28 |