Component Tests and General Diagnostics

SYSTEM PRESSURE TEST
NOTE: When performing system test procedures, power steering pressures can easily exceed 1000 psi. Extreme caution must be exercised when performing these tests to prevent personal injury.

1. Disconnect high pressure line at power steering pump.
2. Connect power steering analyzer tool No. J-25323-B, or equivalent, to power steering pressure line at power steering pump.
3. Shift vehicle to park or neutral and set parking brake.
4. Open valve on analyzer, then start engine and allow system to reach operating temperature. Check fluid level and add if necessary.
5. Check and note pressure and flow readings at idle speed. Do not move steering wheel while engine is running, this will give inaccurate pressure readings. Check hoses for restrictions.
6. Close valve fully three times for not more than five seconds each time. Verify pressures indicated in Power Steering Pressure Specifications. All three readings should be within 50 psi of each other. If reading are not within 50 psi or the same, replace flow control valve ensuring it is free to move in its bore.
7. After completing any repairs, remove analyzer and reconnect high pressure line to pump, then bleed system and fill fluid to full level.