On-Vehicle Inspection

WARNING: This page is about a different car, the 2008 Toyota Tundra. However, it is still accessible from the selected car via links, so may be relevant.

CHECK ENGINE OIL LEVEL
1. Warm up the engine, stop the engine and wait 5 minutes. The oil level should be between the dipstick's low and full level marks.
  If the oil level is low, check for leakage and add oil up to the full level mark.
  
  NOTE: Do not fill engine oil above the full level mark.

INSPECT OIL PRESSURE

Disconnect the oil pressure switch connector.
Using a 24 mm deep socket wrench, remove the oil pressure switch.
Install the oil pressure gauge.
Warm up the engine.

Measure the oil pressure.

Standard oil pressure

OIL PRESSURE SPECIFICATION

Condition	Specified Condition
Idling	29 kPa (0.3 kgf/cm² , 4.3 psi) or more
3000 rpm	294 to 588 kPa (3.0 to 6.0 kgf/cm² , 43 to 85 psi)

Fig 1: Measuring Oil Pressure

If the oil pressure is not as specified, check the oil pump.

Remove the oil pressure gauge.
Apply adhesive to 2 or 3 threads of the oil pressure switch.
Adhesive:

Toyota Genuine Adhesive 1344, Three Bond 1344 or equivalent

Fig 2: Applying Adhesive To Oil Pressure Switch
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Using a 24 mm deep socket wrench, install the oil pressure switch.
Torque: 15 N*m (150 kgf*cm, 11 ft.*lbf)

NOTE: Do not start the engine within 1 hour of installation.
Connect the oil pressure switch connector.
Start the engine and check for engine oil leaks.