Hydraulic Test

AA80E AUTOMATIC TRANSMISSION: AUTOMATIC TRANSMISSION SYSTEM: HYDRAULIC TEST





1. MEASURE LINE PRESSURE
CAUTION:
The line pressure 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 performing the test.

NOTICE:

- Perform the test at the normal operating ATF (Automatic Transmission Fluid) temperature: 50 to 80°C (122 to 176°F)
- Be careful to prevent SST hose from interfering with the exhaust pipe.
- This Check must be conducted after checking and adjusting engine.
- Perform under condition that A/C is OFF.
- When conducting stall test, do not continue more than 5 seconds.


(a) Warm up the ATF.
(b) Remove the test plug on the transmission case center right side and connect SST.
SST: 09992-00095
09992-00231
09992-00271
(c) Fully apply the parking brake and chock the 4 wheels.
(d) Start the engine and check the idling speed.
(e) Keep your left foot firmly on the brake pedal and move the shift lever to D.
(f) Measure the line pressure when the engine is idling.
(g) Depress the accelerator pedal as much as possible with your right foot. Quickly read the highest line pressure reading when the engine speed reaches stall speed.
(h) Perform the measure line pressure test again with the shift lever on R.