Time Lag Test

A: INSPECTION
General Information
If the shift 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.

CAUTION:
^ Perform the test at normal operation fluid temperature 60 to 80°C (140 to 176°F).
^ Be sure to allow a one minute interval between tests.
Make three measurements and take the average value.

Test Methods
1. Fully apply the parking brake.
2. Start the engine.
Check idling speed (A/C OFF).
3. Shift the shift 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
4. In same manner, measure the time lag for "N" > "R".
Time lag: Less than 1.5 seconds
Evaluation
1. If "N" > "D" time lag is longer than specified:
- Line pressure too low
- Low clutch worn
- One-way clutch not operating properly
2. If "N" > "R" time lag is longer than specified:
- Line pressure too low
- Reverse clutch worn
- Low & reverse brake worn