Stall Speed Test
1.
ATF - Level Check
Check the ATF level
.
2.
HDS DLC - Connect
1.
Connect the HDS to the data link connector (DLC) (A) located under the driver's side of the dashboard.
2.
Press the engine start/stop button to select the ON mode.
3.
Make sure the HDS communicates with the vehicle. If it does not communicate,
go to the DLC circuit troubleshooting
.
3.
Engine - Warm Up
Start the engine. Hold the engine speed at 3,000 rpm without load (in P or N) until the radiator fan comes on, then let it idle.
4.
Stall Speed - Test
1.
Apply the parking brake, and block the front wheels.
2.
Make sure the A/C switch is OFF.
3.
Shift to D while pressing the brake pedal firmly, then press the accelerator pedal for 6 to 8 seconds, and note the engine speed.
NOTE: Do not move the shift lever or remove your foot off the brake pedal, while raising the engine speed.
4.
Allow 2 minutes for cooling, then repeat the test in the all shift lever positions.
NOTE:
Do not test stall speed for more than 10 seconds at a time.
Record the engine speed at 6 to 8 seconds after pressing the accelerator pedal. 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 the all shift lever positions.
Do not test stall speed with the A/T pressure gauge installed.
Stall Speed rpm
Specification: 2,000 rpm
Service Limit: 1900 - 2450
5.
If any of the stall speeds are out of the service limit, refer to the problems and probable causes listed in the table.
Problem
Probable Causes
Stall speed rpm high in D, S, and R
ATF pump output low
Main regulator valve stuck
Slipping clutch
Stall speed rpm high in R
Slippage of 4th clutch
Stall speed rpm low in D, S, and R
Engine output low
Engine throttle valve closed
Torque converter one-way clutch slipping
