Time Lag Test: Notes

WARNING: This page does not describe the selected car, but rather 11 other vehicles, including the 1992 Geo Prizm, 1991 Toyota MR2, 1991 Toyota Corolla, 1991 Geo Prizm, and 1990 Toyota Corolla. However, it is still accessible from the selected car via links, so may be relevant.

CAUTION: Perform test with fluid at normal operating temperature of 122-176°F (50-80°C). Allow a one minute interval between tests. Record 3 measurements and use average value.

If selector lever is actuated with engine idling, a time lag will be noted before shock can be felt. This test is used for checking condition of underdrive clutch, forward clutch, direct clutch and 1st and reverse brake. Apply the parking brake and start engine. Make sure that the idle speed is set to specification. Refer to the IDLE SPEED SPECIFICATIONS .

IDLE SPEED SPECIFICATIONS

Vehicle	Transaxle	RPM
Geo
Prizm	A-240E	800
Toyota
Celica GTS (4A-GZE)	A-241E	750-850
Celica GTS (5S-FE)	A-241E	650-750
Celica ST	A-241L	650-750
Celica GT	A-243L	750-850
Corolla LE	A-240L	650-750
MR2	A-241E	550-850
Paseo	A-244E	550-850

Move selector lever from "N" to "D" position. Measure time required for shock to be felt. Time lag must be less than 1.2 seconds. Repeat procedure shifting from "N" to "R" position. Time lag must be less than 1.5 seconds. See results: