The purpose of the stall test is to inspect the overall performance of the automatic
transmission (A/T) and the engine by measuring the stall speed in drive (D)
and reverse (R) range.
- Wedge the 4 wheels and apply the parking brake fully. Lock the
vehicle in place.
- Fully press on the brake pedal with left foot.
Important: Do not continuously run longer than 5 seconds.
Extreme increasing of oil temperature may occur.
- Shift into drive (D) and reverse (R) range, fully press on accelerator
pedal with right foot.
Specification
The standard stall speed is 2240-2540 RPM.
Make sure to keep interval for more than 1 minute between stall tests.
Result of Stall Test
| Cause of Failure
|
Lower than standards in both drive (D) and reverse (R)
|
| • | Torque converter 1-way clutch failure |
|
Higher than standards only in drive (D)
|
| - | Pressure control solenoid (PCS) failure |
| - | Primary regulator valve failure |
| • | Forward clutch (C1) failure, slipping |
| • | No. 2 1-way clutch (F2) failure |
|
Higher than standards only in reverse (R)
|
| - | Primary regulator valve failure |
| • | Reverse clutch (C3) failure, slipping |
| • | 1st and reverse brake (B3) failure, slipping |
|
Higher than standards in both drive (D) and reverse (R)
|
| - | Primary regulator valve failure |
| • | Oil strainer failure, clogging |
| • | Oil leak for each range circuit |
|
