Line Pressure Test: Notes

Purpose of this test is to check operating conditions of each part by measuring fluid pressure in fluid pressure line.

Line pressure test requires the following conditions:

• CVT fluid is at normal operating temperature (70 - 80 °C/158 - 176 °F).
• CVT fluid is replenished to proper level (between full and low on dipstick).
• A/C switch is turned OFF.

1. Check CVT fluid level, see CVT Fluid Check .
2. Apply parking brake securely and place chocks against wheels.
3. Remove fluid pressure check hole bolt (1) shown in figure.
4. Attach oil pressure gauge to fluid pressure check hole (2) in transaxle case shown in figure.
   NOTE: If fluid is leaking from the oil pressure gauge connection, accurate readings cannot be obtained. Make sure that no fluid is leaking after attaching the oil pressure gauge.

   Special Tool 

   (A): 09925-37910 

   Fig 1: Attaching Oil Pressure Gauge To Fluid Pressure Check Hole In Transaxle Case

   Courtesy of SUZUKI OF AMERICA CORP.
5. Depress foot brake fully, run engine at idle and stall then check fluid pressure in "D" or "R" range.
   CAUTION: If you do not take proper precautions during line pressure tests, a CVT failure may result due to an excessive rise in CVT fluid temperature.

   • Do not continue running the engine for longer than 5 seconds at stall speed.
   • After performing a line pressure test, be sure to allow the engine to run at idle for longer than 1 minute before performing another line pressure test.

   CVT line pressure 

   SYMPTOM DIAGNOSIS DESCRIPTION CHART
   
   

   	"D" range	"R" range
   At idle speed	0.5 - 1.0 MPa (5.1 - 10.2 kgf/cm2, 72.5 - 145 psi, 5 - 10 bar)
   At stall speed (Reference)	4.9 - 6.1 MPa (50.0 - 62.2 kgf/cm2, 710 - 884 psi, 49 - 61 bar)

6. If check result is OK, disconnect special tool, then tighten fluid pressure check hole bolt to specified torque.

   Tightening torque 

   Fluid pressure check hole bolt: 7.5 N.m (0.76 kg-m, 5.5 lbf-ft)