Toyota Corolla (E120) 2002–2008 Repair Manual / Maintenance / Under hood
Toyota Corolla (E120): Under hood
General maintenance
1. General notes
- maintenance requirements vary depending on the country.
- Check the maintenance schedule in the owner’s manual supplement.
- Following the maintenance schedule is mandatory.
- Determine the appropriate time to service the vehicle using either miles driven or time (month) elapsed, whichever reaches the specification first.
- Maintain similar intervals between periodic maintenance unless noted.
- Failng to check each vehicle part could lead to poor engine performance and increase exhaust emissions.
2. Windshield washer fluid
- check that there is sufficient fluid in the tank.
3. Engine coolant level
- check that the coolant level is between the ”full” and ”low” lines on the see–through reservoir.
4. Radiator and hoses
- check that the front of the radiator is clean and free of leaves, dirt and bugs.
- check the hoses for cracks, kinks, rotting loose connections.
5. Battery electrolyte level
- by rocking the vehicle, check that the electrolyte level of all the battery cells is between the upper and lower lines on the case.
6. Brake fluid level
- check that the brake fluid levels are near the upper level line on the see–through reservoirs.
7. Engine drive belt
- check the drive belt for fraying, cracks, wear and oiliness.
8. Engine oil level
- check if the level of engine oil is between ”f” and ”l” on the dipstick with the engine turned off.
9. Power steering fluid level
- check the level on the dipstick.
- the level should be in the ”hot” or ”cold” range depending on the fluid temperature.
10. Automatic transmission fluid level
- park the vehicle on a level surface.
- with the engine idling and the parking brake applied, shift the selector into all the positions from ”p” to ”l”. Then shift to the ”p” position.
- ) pull out the dipstick and wipe off the fluid with a clean shop rag. Re–insert the dipstick and check that the fluid level is in the ”hot” range.
- perform this check with the fluid at the normal driving temperature:70 to 80°c (158 to 176°f).
Hint
: after extended driving under harsh conditions (high speeds, hot weather, heavy traffic or pulling a trailer), let the engine cool down for approximately 30 minutes before checking the fluid level.
11. Exhaust system
- check for unusual exhaust sounds or abnormal exhaust fumes. Locate the cause and correct it.
Other materials:
Cleaning and protecting the vehicle exterior
Perform cleaning in a manner
appropriate to each
component and its material.
Cleaning instructions
Working from top to bottom,
liberally apply water to the
vehicle body, wheel wells and
underside of the vehicle to
remove any dirt and dust.
Wash the vehicle body using
a sponge or soft cloth, ...
Circuit description
Refer to dtc p0130
Hint:
the ecm provides a pulse width modulated control circuit to adjust current
through the heater. The heated
oxygen sensor heater circuit uses a relay on the b+ side of the circuit.
Monitor description
The ecm uses the heated oxygen sensor information to regulate t ...
If your vehicle has to be stopped
in an emergency
Only in an emergency, such
as if it becomes impossible
to stop the vehicle in the
normal way, stop the vehicle
using the following procedure:
Stopping the vehicle
1. Steadily step on the brake
pedal with both feet and
firmly depress it.
Do not pump the brake pedal
repeatedly as this will increase t ...


