Power Steering Symptom Troubleshooting; Hard Steering - Honda 2002 Accord Manual

Power Steering
Symptom Troubleshooting
Hard Steering
1. Check the power assist (see page 17-7).
Is the power assist more than 29 N (3.0 kgf, 6.6
Ibf)?
Y E S —Go to step 2.
NO—Power assist is O K . B
2. Measure steady—state fluid pressure from the
pump at idle with T/N 07406-0010001 (see page 17-
9), with T/N 07406-001000A (see page 17-10).
Is the pressure 1,500 kPa (15 kgf/cm
2
,213 psi) or
less?
Y E S - G o to step 3.
N O - G o t o step 7.
3. Measure the pump relief pressure at idle with T/N
07406-0010001 (see page 17-9), with T/N 07406-
001000A (see page 17-10).
Is the pressure 7,200- 7,800 kPa (73- 80 kgf/cm
2
,
1,040- 1,140 psi) or less?
Y E S - G o to step 4.
N O - G o t o step 8.
4. With a spring scale,measure the power assist in
both directions, to the left and to the right.
Are the two measurements within 5.0 N (0.51 kgf,
1.12 Ibf) of each other?
Y E S - G o to step 5.
N O - G o t o step 9.
5. Measure the fluid pressure with T/N 07406-0010001
(see page 17-9), with T/N 07406-001000A (see page
17-10) with both pressure gauge valves open (if so
equipped), while turning the steering wheel fully to
the left and fully to the right.
Is the pressure 7,200- 7,800 kPa (73-80 kgf/cm
2
,
1,040- 1,140 psi) or less?
6. Adjust the rack guide (see page 17-29), and retest.
Is the steering OK?
YES —Repair is completed. •
NO —Faulty gearbox. •
7. Check for the supply 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.H
8. Check the flow control valve (see step 10 on page
17-18) for smooth movement and leaks.
Is the flow control valve OK ?
YES —Faulty pump assembly. •
NO —Faulty flow control valve. •
9. Check the cylinder lines A and B for deformation
(see page 17-8).
Are the Aor B lines deformed?
YES —Replace the lines. •
N O - G o t o step 10.
10. Check for a bent rack shaft or misadjusted rack
guide (to tight).
Is the rack shaft bent or the rack guide adjusted
too tight?
YES—Replace the rack shaft or readjust the rack
g u i d e . •
NO —Faulty valve body unit.H
Y E S - G o to step 6.
NO —Faulty gearbox. •
17-6