Stall Speed Test: Test

How to use this manual .

NOTICE:  

• Do not test stall speed for more than 10 seconds at a time.
• Stall speed tests should be used for diagnostic purposes only.

1. Stall Speed - Test

   Preconditions 

   • Engine Warmed Up

     NOTE:  Warm up the engine by raising the engine speed around 3,000 rpm until the cooling fan(s) comes on.

   • Parking Brake Applied
   • All Four Wheels Blocked
   • A/C Switch OFF
   • Transmission Fluid Level Normal Condition
   • HDS Connected

   Procedure/Specifications 

   1. Select the following menu buttons on the HDS screen in sequence.

   • AT (System Selection Menu)
   • Data List

   2. Start the engine.

   3. Shift the transmission to D position/mode while pressing the brake pedal firmly, then press the accelerator pedal, and note the engine speed.

   NOTE:

   Do not change the shift position/mode or remove your foot off the brake pedal, while raising the engine speed.

   4. Allow 2 minutes for cooling, then repeat the test in R position/mode.

   Specifications 

   HDS Item	Application	Position/Mode	Standard Value
   Engine Speed	2WD	D	1,400-1,800 rpm
   		R	1,700-2,100 rpm
   	AWD	D	1,700-2,100 rpm
   		R	2,000-2,400 rpm

   Result 

   • If the measurement is not within specifications, refer to the problem and primary probable cause listed in the table.

   Abnormal Details 

   Problem	Primary Probable Cause
   Stall speed rpm high in D position/mode	Clutch pressure control solenoid valve G defective B1 cut valve defective B1 brake defective
   Stall speed rpm high in R position/mode	Clutch pressure control solenoid valve B defective Clutch pressure control solenoid valve F defective C3 clutch defective B2 brake defective
   Stall speed rpm low in D and R positions/modes	Torque converter lock-up clutch piston defective