Toyota Corolla (E120) 2002–2008 Repair Manual / Introduction / How to troubleshoot ecu controlled
systems / Problem symptoms table
Toyota Corolla (E120): Problem symptoms table
The suspected circuits or parts for each problem symptom are shown in the table below. Use this table to troubleshoot the problem when a normal code is displayed in the diagnostic trouble code chart but the problem is still occurring. Numbers in the table indicate the order in which the circuits or parts should be checked.
Hint: when the problem is not detected by the diagnostic system even though the problem symptom is present, it may be that the problem is occurring outside the detection range of the diagnostic system.

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If the engine will not start
If the engine will not start even though correct starting procedures are being
followed , consider each of the following points:
The engine will not start even though the starter motor operates normally.
One of the following may be the cause of the problem:
● There may not be sufficient f ...
Installing child restraints using a seat belt
■ Rear-facing - Infant seat/convertible seat
1 Place the child restraint system on the rear seat facing the rear of the vehicle.
2 Run the seat belt through the child restraint system and insert the plate into
the buckle. Make sure that the belt is not twisted.
3 Fully extend the shou ...
Air conditioning controls
■ Adjusting the temperature setting
To adjust the temperature setting, turn
clockwise to increase the temperature
and turn counterclockwise to decrease
the temperature.
■ Fan speed setting
Press “>” on to increase the fan
speed.
Press “<” on to decrease the ...


