Time Lag Test
WARNING: This page is about a different car, the 2005 Mazda RX-8. However, it is still accessible from the selected car via links, so may be relevant.
- Perform mechanical system test preparation. (See MECHANICAL SYSTEM TEST PREPARATION .)
- Start the engine.
- Warm up the engine until the ATF temperature reaches 60-70°C {140-158°F}.
- Shift the selector lever from the N position to D range.
- Use a stopwatch to measure the time it takes from shifting until shock is felt. Take three measurements for each test and average from the results using the following formula.
Formula
- Average time lag = (Time 1 + Time 2 + Time 3) / 3
- Perform the test for the following shifts in the same manner Step 5.
- N position --> R position
Time lag
- N position --> D range: approx. 0.2-1.3 s
- N position --> R position: approx. 0.2-1.3 s
Evaluation of time lag test
EVALUATION OF TIME LAG TESTCondition Possible Cause Above specification N --> D shift Insufficient line pressure in all forward ranges
Low clutch slippage
Low one-way clutch slippageN --> R shift Insufficient line pressure in R position
Low and reverse brake slippage
Reverse clutch slippage