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.

Circuit inspection

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    Rear seats
    ► Type A 1 Up Pull the head restraints up. 2 Down Push the head restraint down while pressing the lock release button. ► Type B 1 Up Pull the head restraints up. 2 Down Push the head restraint down while pressing the lock release button. ■Removing the head restraints ...

    Foamed material application areas
    If an increase in temperature or other condition damages the foamed material when repairing or replacing the panel, fill in the insufficient areas with urethane foam. The following illustration shows the areas for one side, but the foamed material must be applied equally to both the left and r ...

    Catalyst monitor (o2s type)
    Preconditions The monitor will not run unless: mil is off. Engine coolant temperature (ect) is 176°f (80 °C) or greater. Intake air temperature (iat) is 14°f (–10 °C) or greater.* Notice: * 2002 and later my vehicles: the readiness test can be completed in cold ambient c ...