RSX L4-2.0L (2005)
Power Steering Pump: Testing and Inspection
Pump Pressure Test With T/N 07406-010001
Pump Pressure Test with T/N 07406-010001
Special Tools Required
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P/S joint adapter (pump) 07VAK-P8A011A
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P/S joint adapter plate (pump) 07ZAK-S7CA100
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P/S joint adapter (hose) 07ZAK-S7CA200
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P/S pressure gauge 07406-0010001
Check the fluid pressure as follows to determine whether the trouble is in the pump or gearbox.
1. Check the power steering fluid level.
2. Disconnect the pump outlet hose (A) from the pump outlet with care so as not to spill the power steering fluid on the frame and other parts. Install
the P/S joint adapter (pump) on the pump outlet (B).
3. Connect the P/S joint adapter (hose) to the P/S pressure gauge, then connect the pump outlet hose (A) to the P/S joint adapter (hose).
4. Install the P/S pressure gauge to the P/S joint adapter (pump).
5. Fully open the shut-off valve (A).
6. Fully open the pressure control valve (B).
7. Start the engine and let it idle.
8. Turn the steering wheel from lock-to-lock several times to warm the fluid to operating temperature at 158°F (70°C).
9. Measure steady-state fluid pressure while the engine is idling. If the pump is in good condition, the pressure should be no more than 1,470 kPa
(15 kgf/cm2, 213 psi). If the pressure is too high, check for:
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Clogged or deformed feed or return line between the pump and gearbox.
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Clogged valve body unit.
10. Raise the engine speed to 3,000 rpm, and measure the fluid pressure. If the pump is in good condition, the pressure should be at least 1,470 kPa
(15 kgf/cm2, 213 psi). If the pressure is too high, repair or replace the pump.
11. 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.
NOTICE: Do not-keep the shut-off valve closed more than 5 seconds or the pump could be damaged by overheating.
12. Immediately open the shut off valve fully. If the pump is in good condition, the gauge should read at least this specification:
K20A2 engine model: 7,160 - 7,850 kPa (73 - 80 kgf/cm2, 1,040 - 1,140 psi)
K20Z1 engine model: 7,360 - 8,040 kPa (75 - 82 kgf/cm2, 1,070 - 1,170 psi)
K20A3 engine model: 6,570 - 7,260 kPa (67 - 74 kgf/cm2, 950 - 1,050 psi)
A low reading means pump output is too low for full assist. Repair or replace the pump.
