Stall Speed Test
- Make sure the transmission fluid is filled to the proper level (see ATF LEVEL CHECK ).
- Apply the parking brake, and block all four wheels.
- Connect the HDS to the DLC (A) located under the driver's side of the dashboard.
- Turn the ignition switch to ON (II), and go to the A/T data list. Make sure the HDS communicates with the PCM. If it does not, go to DLC CIRCUIT TROUBLESHOOTING ).
- Make sure the A/C switch is OFF.
- Start the engine, and warm it up to normal operating temperature (the radiator fan comes on).
- Shift to D while pressing the brake pedal firmly, then press the accelerator pedal for 6 to 8 seconds, and note the engine speed. Do not move the shift lever or remove your foot off the brake pedal, while raising the engine speed.
- Allow 2 minutes for cooling, then repeat the test with the shift lever in R.NOTE:
- Do not test stall speed for more than 10 seconds at a time.
- Stall speed tests should be used for diagnostic purposes only.
- Stall speed test result should be the same in D, 2, 1 and R.
- Do not test stall speed with A/T pressure gauges installed.
Stall Speed rpm:
Specification: 1, 850 rpm
Service Limit: 1, 700-2, 000 rpm
- If any of the stall speeds are out of the service limit, the possible problems and probable causes are listed in the table below.
PROBLEM SYMPTOM REFERENCE TABLE
| Problem | Probable causes |
|---|---|
| Stall speed rpm high in D, 2, 1 and R |
|
| Stall speed rpm high in 1 | Slippage of 1st clutch or 1st gear one-way clutch |
| Stall speed rpm high in 2 | Slippage of 2nd clutch |
| Stall speed rpm high in R | Slippage of 5th clutch |
| Stall speed rpm low in D, 2, 1 and R |
|