| 1. | Check the power assist. Is the starting load more than 29 N (3.0 kgf, 6.6 lbf)? YES - Go to 2. NO - Power assist is OK.n |
| 2. | Measure steady-state fluid pressure from the pump at idle. Is the pressure 1,500 kPa (15 kgf/cm2, 213 psi) or less? YES - Go to 3. NO - Go to 7. |
| 3. | Measure the pump relief pressure at idle. Is the pressure 7,160-7,850 kPa(73-80 kgf/cm2, 1,040-1,140 psi) or less? YES - Go to 4. NO - Faulty pump assembly.n |
| 4. | 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 5. NO - Go to 8. |
| 5. | 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 7,160-7,850 kPa(73-80 kgf/cm2, 1,040-1,140 psi) or less? YES - Go to 6. NO - Faulty gearbox.n |
| 6. | Adjust the rack guide, and retest. Is the steering OK? YES - Repair is completed.n NO - Faulty gearbox.n |
| 7. | 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.n NO - Faulty valve body unit or pump.n |
| 8. | Check the cylinder lines for deformation. Are the lines deformed? YES - Replace the lines.n NO - Go to 9. |
| 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.n NO - Faulty valve body unit.n |