Toyota Corolla (E120): Problem symptoms table

Use the table below to help you find the cause of the problem. The numbers indicate the priority of the likely cause of the problem. Check each part in order. If necessary, replace these parts.

Repair

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    Engine immobilizer system
    The vehicle's keys have built-in transponder chips that prevent the engine from starting if a key has not been previously registered in the vehicle's on-board computer. Never leave the keys inside the vehicle when you leave the vehicle. This system is designed to help prevent vehicle theft but doe ...

    Optimal use of the multimedia system
    On the “Sound Settings” screen, sound quality (Treble/Mid/ Bass), volume balance can be adjusted. How to adjust the sound settings and sound quality 1 2 3 Select “-” or “+” to adjust the treble, mid or bass to a level between -5 and 5. 4 5 Select “Front” or “Rear” to adjus ...

    Emission inspection and maintenance (I/M) programs
    Some states have vehicle emission inspection programs which include OBD (On Board Diagnostics) checks. The OBD system monitors the operation of the emission control system. If the malfunction indicator lamp comes on The OBD system determines that a problem exists somewhere in the emission cont ...