Stall Speed Test (CVT): Test

How to use this service information .

NOTICE: 

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

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.

   NOTICE:  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 all positions/modes.

   Specifications 

   HDS Item	Standard Value	Service Limit
   Engine Speed	2, 500 rpm	2, 350-2, 650 rpm

   Result 

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

   Abnormal Details 

   Problem	Probable Cause
   Stall speed rpm high	Low transmission fluid level Transmission fluid deteriorated Transmission fluid pump worn, binding, or foreign material in transmission fluid pump Torque converter assembly defective Forward clutch assembly defective Input shaft worn or damaged Reverse brake defective Valve body assembly defective Lubrication pipe defective Stator shaft defective TCM defective
   Stall speed rpm low	Torque converter assembly defective Valve body assembly defective Lubrication pipe defective Stator shaft defective Engine output low TCM defective