On-Vehicle Inspection

INSPECT DRIVE BELT
1. Visually check the belt for excessive wear, frayed cords, etc.
  If any defect is found, replace the drive belt.
  
  HINT:
  
  Cracks on the rib side of a belt are considered acceptable. Replace the belt if there are any missing ribs.
2. Check by hand that the belt fits properly in the ribbed grooves and has not slipped out of the grooves on the bottom of the crank pulley.
  
  Fig 1: Inspecting Drive Belt
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
BLEED POWER STEERING SYSTEM
1. Check the fluid level.
2. Jack up the front of the 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 times.
4. Lower the vehicle.
5. Start the engine.
6. Idle the engine for a few minutes.
7. Turn the steering wheel.
  1. With the engine idling, turn the wheel left or right to the 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.*1
  2. Repeat *1 several times.
    NOTE: For vehicles with VGRS, if the steering wheel is turned from lock to lock repeatedly, the system may stop operating and the amount of rotation before the steering wheel locks may increase due to operation of the overheating prevention function. When the system temperature drops, the system operation automatically returns to normal.
8. Stop the engine.
9. Check for foaming or emulsification.
  If the system has to be bled twice because of foaming or emulsification, check for fluid leaks in the system.
10. Check the fluid level.
  
  Fig 2: Checking For Foaming Or Emulsification
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
CHECK FLUID LEVEL
1. Keep the vehicle horizontal.
2. With the engine stopped, check the fluid level in the reservoir.
  If necessary, add fluid.
  
  Fluid:
  
  ATF DEXRON II or III
  
  Fig 3: Identifying Fluid Level In Reservoir
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  HINT:
  
  If the fluid is hot, check that the fluid level is within the HOT range. If the fluid is cold, check that the fluid level is within the COLD range.
3. Start the engine and idle it.
4. Turn the steering wheel from lock to lock several times to raise the fluid temperature.
  Fluid temperature:
  
  80°C (176°F)
5. Check for foaming or emulsification.
  If foaming or emulsification is identified, bleed the power steering system.
  
  Fig 4: Checking For Foaming Or Emulsification
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
6. With the engine idling, measure the fluid level in the reservoir.
7. Stop the engine.
8. Wait a few minutes and remeasure the fluid level in the reservoir.
  Maximum fluid level rise:
  
  5.0 mm (0.197 in.)
  
  If the fluid level rise is more than the maximum, bleed the power steering system.
9. Check the fluid level.
  
  Fig 5: Identifying Fluid Level In Reservoir
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
CHECK STEERING FLUID PRESSURE
1. Disconnect the pressure feed tube from the vane pump (See REMOVAL ).
2. Connect SST as shown in the illustration.
  SST 09640-10010 (09641-01010, 09641-01030, 09641-01060)
  
  NOTE: Make sure that the valve of SST is in the open position.
  
  Fig 6: Connecting SST To Steering System
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Bleed the power steering system.
4. Start the engine and idle it.
5. Turn the steering wheel from lock to lock several times to raise the fluid temperature.
  Fluid temperature:
  
  80°C (176°F)
6. With the engine idling, close the valve of SST and observe the reading on SST.
  Standard fluid pressure:
  
  10000 to 10700 kPa (102 to 109 kgf/cm ² , 1450 to 1552 psi)
  NOTE:
  - Do not keep the valve closed for more than 10 seconds.
  - Do not allow the fluid temperature to become too high.
  Fig 7: Power Steering System Operation Diagram - Closed
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  If the pressure is less than the standard, check for fluid leaks and replace parts as necessary.
7. With the engine idling, fully open the valve.
8. Measure the fluid pressure at engine speeds of 1000 RPM and 3000 RPM.
  Difference in fluid pressure: 500 kPa (5.1 kgf/cm ² , 73 psi) or less
  
  NOTE: Do not turn the steering wheel.
  
  If the pressure difference is above the specified range, check for fluid leaks and replace parts as necessary.
  
  Fig 8: Power Steering System Operation Diagram - Open
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
9. With the engine idling and the valve fully open, turn the steering wheel left or right to the full lock position. Observe the reading on SST.
  Standard fluid pressure:
  
  10000 to 10700 kPa (102 to 109 kgf/cm ² , 1450 to 1552 psi)
  
  Fig 9: Power Steering System Operation Diagram - Lock Position
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  NOTE:
  - Do not keep the steering wheel in the full lock position for more than 10 seconds.
  - Do not allow the fluid temperature to become too high.
  If the pressure is less than the standard, check for fluid leaks and replace parts as necessary.
10. Disconnect SST.
  SST 09640-10010 (09641-01010, 09641-01030, 09641-01060)
11. Connect the pressure feed tube (See INSTALLATION ).
12. Bleed the power steering system.