Honda Civic. Manual — part 953

Fig. 5: Identifying Pressure Control Valve

9. Fully open the pressure control valve (B).

10. Start the engine, and let it idle.
11. Turn the steering wheel from lock-to-lock several times to warm the fluid to

operating temperature at 158°F (70°C).

12. Measure steady-state fluid pressure while the engine is idling. If the pump is in

good condition, the gauge should be no more than 1,470 kPa (15 kgf/cm

2

, 213

psi). If it reads higher, check for:

Clogged or deformed pump outlet or return line between the pump and the
steering gearbox.

Clogged valve body unit.

13. Raise the engine speed to 3,000 rpm, and measure the fluid pressure. If the

pump is in good condition, the gauge should read at least 1,470 kPa (15

kgf/cm

2

, 213 psi). If it reads higher, repair or replace the pump.

14. Lower the engine speed, and let it idle. Close the shut-off valve, then close the

pressure control valve gradually until the pressure gauge needle is stable. Read
the pressure.

15. Immediately open the shut-off valve fully.

NOTE:

Do not keep the shut-off valve closed more than 5
seconds or the pump could be damaged by
overheating.

2008 Honda Civic EX

2006-08 STEERING Hydraulic Power Steering Components - Civic (All Except Hybrid)

If the pump is in good condition, the gauge should read at least 7,850-8,550

kPa (80-87 kgf/cm

2

, 1,140-1,240 psi). A low reading means pump output is

too low for full assist. Repair or replace the pump.

16. Reinstall all removed parts.

PUMP PRESSURE TEST WITH T/N 07406-001000A

Special Tools Required

P/S joint adapter (pump) 07RAK-S040111

P/S joint adapter (hose) 07RAK-S040122

P/S pressure gauge 07406-001000A

Check the fluid pressure as follows to determine whether the trouble is in the pump
or the steering gearbox.

1. Check the power steering fluid level (see FLUID REPLACEMENT ).
2. Remove the cowl cover and under-cowl panel (see FRONT GRILLE

COVER REPLACEMENT ).

3. Remove the pump outlet hose clamp (A) from the intake manifold.

Fig. 6: Identifying Pump Outlet Hose Clamp (With Torque Specifications)

4. Disconnect the pump outlet hose, then install the P/S joint adapter (pump) on

the pump (A). Take care so as not to spill the power steering fluid on the frame
and other parts.

2008 Honda Civic EX

2006-08 STEERING Hydraulic Power Steering Components - Civic (All Except Hybrid)

Fig. 7: Identifying P/S Joint Adapter (Pump) On Pump (With Torque
Specifications)

5. Install the P/S pressure gauge to the P/S joint adapter (pump).
6. Connect the P/S joint adapter (hose) to the P/S pressure gauge.
7. Connect the pump outlet hose (A) to the P/S joint adapter (hose).

Fig. 8: Identifying P/S Pressure Gauge To P/S Joint Adapter (Pump)
(With Torque Specifications)

8. Open the shut-off valve (A) fully.

2008 Honda Civic EX

2006-08 STEERING Hydraulic Power Steering Components - Civic (All Except Hybrid)

Fig. 9: Identifying Shut-Off Valve - P/S Pressure Gauge

9. Start the engine, and let it idle.

10. Turn the steering wheel from lock-to-lock several times to warm the fluid to

operating temperature at 158°F (70°C).

11. Measure steady-state fluid pressure while the engine is idling. If the pump is in

good condition, the gauge should be no more than 1,470 kPa (15 kgf/cm

2

, 213

psi). If it reads higher, check for:

Clogged or deformed pump outlet or return line between the pump and the
steering gearbox.

Clogged valve body unit.

12. Raise the engine speed to 3,000 rpm, and measure the fluid pressure. If the

pump is in good condition, the gauge should read at least 1,470 kPa (15

kgf/cm

2

, 213 psi). If it reads higher, repair or replace the pump.

13. Lower the engine speed, and let it idle. Close the shut-off valve gradually until

the pressure gauge needle is stable. Read the pressure.

14. Immediately open the shut-off valve fully. If the pump is in good condition, the

gauge should read at least 7,850-8,550 kPa (80-87 kgf/cm

2

, 1,140-1,240 psi).

NOTE:

Do not keep the shut-off valve closed more than 5
seconds or the pump could be damaged by
overheating.

2008 Honda Civic EX

2006-08 STEERING Hydraulic Power Steering Components - Civic (All Except Hybrid)