TIME LAG TEST
When the shift lever is shifted while the engine is idling, there will be a certain time lapse or lag before the
shock can be felt. This is used for checking the condition of the O/D direct clutch, forward clutch, direct
clutch and first and reverse brake.
NOTICE:
Perform the test at normal operating fluid temperature (50–80E C or 122–176E F).
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Be sure to allow one minute interval between tests.
•
Make three measurements and take the average value.
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MEASURE TIME LAG
(a) Fully apply the parking brake.
(b) Start the engine and check the idle speed.
Idle speed: 800 RPM
(N position)
(c) Shift the shift lever from N to D position. 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
(d) In same manner, measure the time lag for N–Y R.
Time lag: Less than 1.5 seconds
EVALUATION
(a) If N–D time lag is longer than specified:
Line pressure too low
Forward clutch worn
O/D one–way clutch not operating properly
(b) If N–R time lag is longer than specified:
Line pressure too low
Direct clutch worn
First and reverse brake worn
O/D one–way clutch not operating properly
AUTOMATIC TRANSMISSION
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Troubleshooting (Mechanical System Tests)
AT–75