On-Vehicle Inspection

Visually check the belt for excessive wear, frayed cords, etc. If any defect has been found, replace the drive belt.

HINT:

Cracks on the rib side of the belt are considered acceptable. If the belt has chunks missing from the ribs, it should be replaced.

1. Check the fluid level.
2. Jack up the front of vehicle and support it with stands.
3. Turn the steering wheel.
   1. With the engine stopped, turn the wheel slowly from lock to lock several items.
4. Lower the vehicle.
5. Start the engine.
   1. Run the engine at idle for a few minutes.
      Fig 1: Identifying Damaged Area Of Drive Belt

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
6. Turn the steering wheel.
   1. With the engine idling, turn the wheel to left or right full lock position and keep it there for 2 to 3 seconds, then turn the wheel to the opposite full lock position and keep it there for 2 to 3 seconds.
   2. Repeat the previous step several times.
7. Stop the engine.
8. Check for forming or emulsification.

   If the system has to be bled twice specifically because of forming or emulsification, check for fluid leaks in the system.

9. Check the fluid level.
   Fig 2: Checking Forming Or Emulsification

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Keep the vehicle level.
2. With the engine stopped, check the fluid level in the oil reservoir.

   If necessary, add fluid.

   Fluid: 

   ATF "DEXRON" II or III 

   HINT:

   Check that the fluid level is within the HOT LEVEL range on the reservoir. If the fluid is cold, check that it is within the COLD LEVEL range.

3. Start the engine and run it at idle.
4. Turn the steering wheel from lock to lock several times to boost fluid temperature.

   Fluid temperature: 

   80°C (176°F) 

5. Check for foaming or emulsification.
   Fig 3: Checking Fluid Level In Oil Reservoir

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   If there is foaming or emulsification, bleed air from the power steering system.

   Fig 4: Checking Foaming Or Emulsification

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
6. With the engine idling, measure the fluid level in the oil reservoir.
7. Stop the engine.
8. Wait a few minutes and remeasure the fluid level in the oil reservoir.

   Maximum fluid level rise: 5 mm (0.20 in.) 

   If a problem is found, bleed air from the power steering system.

9. Check the fluid level.
   Fig 5: Measuring Fluid Level In Oil Reservoir With Engine Idling

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Remove the air cleaner assembly with air cleaner hose (see REMOVAL  ).
2. Disconnect the pressure feed tube from the vane pump (see REMOVAL  ).
3. Connect SST as shown.

   SST 09640-10010 (09641-01010, 09641-01030, 09641-01060) 

   NOTE: Check that the valve of the SST is in the open position.
   Fig 6: Disconnecting Pressure Feed Tube From Vane Pump

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
4. Bleed air from the power steering system.
5. Start the engine and run it at idle.
6. Turn the steering wheel from lock to lock several times to boost fluid temperature.

   Standard fluid temperature: 80°C (176°F) 

7. With the engine idling, close the valve of the SST and observe the reading on the SST.

   Minimum fluid pressure: 10,000 kPa (102 kgf/cm ²  , 1,451 psi) 

   NOTE:

   • Do not keep the valve closed for more than 10 seconds.
   • Do not let the fluid temperature become too high.
     Fig 7: Vane Pump Pressure Operating System Diagram - Closed

     Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
8. With the engine idling, open the valve fully.
9. Measure the fluid pressure at engine speeds of 1,000 rpm and 3,000 rpm.

   Standard difference fluid pressure: 490 kPa (5 kgf/cm ²  , 71 psi) or less 

   NOTE: Do not turn the steering wheel.
   Fig 8: Vane Pump Pressure Operating System Diagram - Open

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
10. With the engine idling and valve fully opened, turn the steering wheel to full lock.

    Minimum fluid pressure: 10,000 kPa (102 kgf/cm ²  , 1,451 psi) 

    NOTE:

    • Do not maintain lock position for more than 10 seconds.
    • Do not let the fluid temperature become too high.
11. Disconnect the SST.

    SST 09640-10010 (09641-01010, 09641-01030, 09641-01060) 

12. Connect the pressure feed tube (see INSTALLATION  ).
13. Install the air cleaner assembly with air cleaner hose (see INSTALLATION  ).
14. Bleed air from the power steering system.
    Fig 9: Vane Pump Pressure Operating System Diagram - Open

    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Turn the air conditioning switch off.
   1. Start the engine and run it at idle.
   2. Fully turn the steering wheel.
   3. Check that the engine rotations decrease when the vacuum hose of the air control valve is pinched.
   4. Check that the engine rotations increase when the hose is released.
      Fig 10: Decreasing Vacuum Hose Of Air Control Valve

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002