Stall Speed Test

MECHANICAL SYSTEM TESTS

STALL TEST
The object of this test is to check the overall performance of the transaxle and engine by measuring the stall speeds in the D and R positions.

NOTICE:
- Do the test at normal operation ATF temperature 50 - 80°C (122 - 176°F).
- Do not continuously run this test longer than 5 seconds.
- To ensure safety, conduct this test in a wide, clear, level area which provides good traction.
- The stall test should always be carried out in pairs. One technician should observe the conditions of wheels or wheel stoppers outside the vehicle while the other is doing the test.

MEASURE STALL SPEED
(a) Chock the 4 wheels.
(b) Fully apply the parking brake.
(c) Connect OBD II scan tool or TOYOTA hand-held tester DLC3.
(d) Start the engine and check idle speed.
(e) Keep your left foot pressed firmly on the brake pedal.
(f) Shift into the D position. Fully depress the accelerator pedal.
Quickly read the stall speed at this time.

Stall speed: 2,550 ± 150 rpm

(g) Do the same lest in R position.

Stall speed: 2,550 ± 150 rpm





EVALUATION

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 U/D direct clutch, forward clutch, direct clutch, and 1st and reverse brake.

NOTICE:
- Do the test at normal operating ATF temperature 50 - 80°C (122 - 176°F).
- Be sure to allow 1 minute interval between tests.
- Take three 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 A/C OFF)

(c) Shift the shift lever from the N to D position. Using a stop watch, measure the time it takes from shifting the lever until the shock is felt.
In same way, measure the time lag for N -> R.

Time lag: N -> D Less than 1.2 seconds

In same way. measure the time lag for N -> R.

Time lag: N -> R Less than 1.5 seconds





EVALUATION
If N -> D or N -> R time lag is longer than specified: