AT1–46 AT340E (2JZ–GE) AUTOMATIC TRANSMISSION – TROUBLESHOOTING 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: • Do the test at normal operating fluid temp. 50–80 °C (122–176 °F). • Be sure to allow a one minute interval between tests. • Take 3 measurements and take the average value. MEASURE TIME LAG (a) Fully apply the parking brake (b) Start the engine and check idle speed. Idle speed: 700 ± 50 rpm (In N position and air conditioner OFF) (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. In same manner, measure the time lag for N → R. Time lag: N → D Less than 1.2 seconds N → R Less than 1.5 seconds Shock Noise 50 – 80 °C (122 – 176 °F) RPM R N D Shock Noise TC0009