Time Lag Test

GENERAL
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 forward clutch, reverse clutch, low & reverse brake, forward one-way clutch and low 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.

PROCEDURE
1. Fully apply the parking brake.
2. Start the engine. Check idling speed (A/C OFF).
"N" range: 800 +/-100 rpm
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
- Forward clutch-worn
- Low 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
- Forward one-way clutch not operating properly