A/T Stall Speed Test

A/T Stall Speed Test

1. Make sure the transmission fluid is filled to the proper level ATF Level Check.

2. Apply the parking brake, and block all four wheels.

3. Connect the HDS to the DLC (A) located under the driver's side of the dashboard.






4. Turn the ignition switch to ON (II).

5. Make sure the HDS communicates with the PCM, and go to the A/T Data List. If it does not, go to the DLC circuit troubleshooting Testing and Inspection.

6. Make sure the A/C switch is OFF.

7. Start the engine, and warm it up to normal operating temperature (the radiator fan comes on).

8. 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.

9. Allow 2 minutes for cooling, then repeat the test with the shift lever in S and R.

NOTE:

- Do not test stall speed for more than 10 seconds at a time.
- Record the engine speed 6 to 8 seconds after pressing the accelerator pedal. A higher engine speed will be indicated for 5 seconds.
- Stall speed tests should be used for diagnostic purposes only.
- The stall speed should be the same in D, S, and R.
- Do not test stall speed with A/T pressure gauges installed.





10. If any of the stall speeds are out of the service limit, refer to the problems and probable causes listed in the table.