Time Lag Test: Inspection

NOTE: If the select lever is shifted while the engine is idling, there will be a certain time elapse or lag before the shock can be felt. This is used for checking the condition of the low clutch, reverse clutch, low & reverse brake and one-way clutch.

Perform the test at normal operating fluid temperature 70 to 80°C (158 to 176°F).
Be sure to allow a 1 minute interval between tests.
Make three measurements and take the average value.

Fully apply the parking brake.
Start the engine.
Check the idling speed (A/C OFF).
Shift the select lever from "N" to "D" range.
Using a stop watch, measure the time it takes from shifting the lever until the shock is felt.

Time lag: Less than 1.2 seconds

If "N" --> "D" time lag is longer than specified:
- Line pressure too low
- Low clutch worn
- One-way clutch not operating properly
In the same manner, measure the time lag for "N" --> "R".
Time lag: Less than 1.5 seconds

If "N" --> "R" time lag is longer than specified:
- Line pressure too low
- Reverse clutch worn
- Low & reverse brake worn
- Wear of D-ring