Toyota Corolla (E120) 2002–2008 Repair Manual / Lubrication / Lubrication system
Toyota Corolla (E120): Lubrication system
On–vehicle inspection
1. Check engine oil level
- after warming up the engine and then 5 minutes after the engine stops, oil level should be between the ”l” and ”f” marks on the oil level gage.
If low, check for leakage and add oil up to the ”f” mark.
Notice
: do not fill with engine oil above the ”f” mark.
2. 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: use api grade sl ”energy–conserving”, or ilsac multigrade engine oil.
Sae 5w–30 is the best choice for good fuel economy, and good starting in cold weather.
If sae 5w–30 is not available, sae 10w–30 may be used.
However, it should be replaced with sae 5w–30 at the next oil replacement.
3. 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.
- inspect the oil pressure.
Oil pressure:


- Apply adhesive to 2 or 3 threads of the oil pressure switch.
Adhesive:
part no. 08833–00080, Three bond 1344, loctite 242 or equivalent - using a 24 mm deep socket wrench, install the oil pressure
switch.
Torque: 15 nvm (153 Kgf·cm, 11 ft·lbf)
- connect the oil pressure switch connector.
- check for the engine oil leaks.
Other materials:
Diagnostic trouble code chart
If a dtc is displayed during the dtc check, check the circuit listed in the
table below and proceed to the
page given.
* :● ... Mil light up
...
Follow the correction procedures. (vehicles with a smart key system and with
a drive monitor display)
After taking the specified steps to correct the suspected problem, check that
the warning light turns off.
■SRS warning light
This warning light system monitors the airbag sensor assembly, front impact
sensors, side impact sensors (front door), side impact sensors (front), side impac ...
Circuit description
The throttle pressure that is applied to the primary regulator
valve (which modulates the line pressure) causes the solenoid
valve slt, under electronic control, to precisely and minutely
modulate and generate the line pressure according the extent
of the accelerator pedal depressed or the o ...


