Prius L4-1.5L (1NZ-FXE) (Hybrid) (2003)
Engine Oil Pressure: Testing and Inspection
INSPECTION
1. CHECK ENGINE OIL QUALITY
Check the oil for deterioration, entry of water, discoloring or thinning.
If the quality is visibly poor, replace the oil.
Oil grade: API grade SL, Energy-Conserving or ILSAC multigrade engine oil.
2. CHECK ENGINE OIL LEVEL
After warming up the engine and then 5 minutes after the engine stop, oil level should be between the "L" and "F" marks on the dipstick.
If low. check for leakage and add oil up to the "F" mark.
NOTICE: Do not fill with engine oil above the "F" mark.
3. REMOVE OIL PRESSURE SWITCH, AND INSTALL OIL PRESSURE GAUGE
a. Remove the oil pressure switch.
b. Install the oil pressure gauge.
4. ACTIVATE INSPECTION MODE AND WARM UP ENGINE
Allow the engine to warm up to normal operating temperature.
5. CHECK OIL PRESSURE
Oil pressure:
At idle speed 29 kPa (0.3 kgf/cm2, 4.3 psi) or more
At 2,250 rpm 150 - 550 kPa (1.5 - 5.6 kgf/cm2, 22 - 80 psi)
6. REMOVE OIL PRESSURE GAUGE AND REINSTALL OIL PRESSURE SWITCH
a. Remove the oil pressure gauge.