Hard Steering Check the power assist. Is the starting load more than 29 N (3.0 kgf, 6.6 lbf)?
YES | - | Go to Step 2 .
NO | - | Power assist is OK.■
Measure steady-state fluid pressure from the pump at idle. Is the pressure 1,470 kPa (15 kgf/cm 2 , 213 psi) or less?
YES | - | Go to Step 3 .
NO | - | Go to Step 7 .
Measure the pump relief pressure at idle. Is the pressure 8,150−8,850 kPa (83−90 kgf/cm 2 , 1,180−1,280 psi) or less?
YES | - | Go to Step 4 .
NO | - | Faulty pump assembly.■
With a spring scale, measure the power assist in both directions, to the left and to the right. Are the two measurements within 2.9 N (0.3 kgf, 0.66 lbf) of each other?
YES | - | Go to Step 5 .
NO | - | Go to Step 8 .
Measure the fluid pressure with both pressure gauge valves open, while turning the steering wheel fully to the left and fully to the right. Is the pressure 8,150−8,850 kPa (83−90 kgf/cm 2 , 1,180−1,280 psi) or less?
YES | - | Go to Step 6 .
NO | - | Faulty gearbox.■
Adjust the rack guide, and retest. Is the steering OK?
YES | - | Repair is completed.■
NO | - | Faulty gearbox.■
Check the feed and return lines between the pump and the gearbox for clogging and deformation. Are the lines clogged or deformed?
YES | - | Repair or replace the lines.■
NO | - | Faulty valve body unit or pump.■
Check the cylinder lines for deformation. Are the lines deformed?
YES | - | Replace the lines.■
NO | - | Go to Step 9 .
Check for a bent rack shaft or misadjusted rack guide (too tight). Is the rack shaft bent or the rack guide adjusted too tight?
YES | - | Replace the rack shaft or readjust the rack guide.■
NO | - | Faulty valve body unit.■