Operation CHARM: Car repair manuals for everyone.

Time Lag Test

This test measures time lag when checking the hydraulic components and the friction elements.
1. Perform mechanical system test preparation.
2. Start the engine.
3. Warm up the engine until the ATF reaches 66 - 77°C (15 - 170°F).
4. After normal operating temperature is reached, shift the selector from N position to D range.
5. Use a stopwatch to measure the time it takes from shifting until engagement is felt. Make three measurements for each test and average the results.
6. Perform the test for the shifts in the same manner.
^ N position -> R position
Time lag
N -> D range... below approx. 1.0 second
N -> R position... below approx. 1.0 second





Evaluation chart for time lag test

7. Turn off the engine.