Stall Test: Inspection

Purposes of the stall test:

• Operational check of forward clutch and reverse brake
• Operational check of the torque converter
• Engine performance check
  1. Check the engine oil level. Ref. to LUBRICATION (H4DO)>ENGINE OIL>INSPECTION .
  2. Check the engine coolant level. Ref. to COOLING (H4DO)>ENGINE COOLANT>INSPECTION .
  3. Connect the Subaru Select Monitor.
  4. Turn the ignition switch to ON. (Engine OFF)
  5. Display [ATF Temp.] and [Engine Speed].
  6. Turn off all systems causing an electrical load, such as headlights, A/C, seat heater and rear defogger.
  7. Apply the parking brake.
  8. Start the engine.
  9. Turn OFF the pre-collision brake function. (Models with EyeSight)
  10. Check the CVTF level. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR580)>CVTF>INSPECTION .
  11. Warm up until [ATF Temp.] reaches to 60 - 80 °C (140 - 176 °F).
  12. Place wheel chocks at the front and rear of all wheels.
  13. Shift the select lever to "D range".
  14. Depress the accelerator pedal to the full while fully depressing the foot brake pedal with your left foot.
      CAUTION:

      • Do not perform the stall test for five seconds or more at a time. Failure to follow this instruction may accelerate the engine oil and CVTF deterioration and affect the engine and transmission adversely.
      • If the stall speed is higher than the specified range, attempt to finish the stall test in as short a time as possible, in order to prevent the transmission from sustaining damage.
  15. When the engine speed stabilizes, quickly record [Engine Speed] and release accelerator pedal.

      Standard: 

      1, 950 - 2, 550 r/min

      STALL TEST JUDGMENT
      
      

      Stall speed (at sea level)	Range	Probable cause
      Lower than standard value	D	Insufficient engine output Torque converter malfunction
      Higher than standard value		Forward clutch slippage Secondary pressure (line pressure) is low. Variator chain malfunction Torque converter malfunction Control valve body malfunction TCM malfunction Damaged harness and harness connector

  16. Shift the select lever to "N range", and idle the engine for one minute or more.
  17. Shift the select lever to "R range" and perform the stall test in the same manner.

      Standard: 

      1, 850 - 2, 450 r/min

      STALL TEST JUDGMENT
      
      

      Stall speed (at sea level)	Range	Probable cause
      Lower than standard value	R	Insufficient engine output Torque converter malfunction
      Higher than standard value		Reverse brake slippage Secondary pressure (line pressure) is low. Variator chain malfunction Torque converter malfunction Control valve body malfunction TCM malfunction Damaged harness and harness connector