Toyota Corolla (E120): Circuit description

If the ignition switch is turned to the on position, battery positive voltage is applied to the switches, such as terminal ig of the ecu.

Wiring diagram

Inspection procedure

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    Bluetooth®
    ■When using the Bluetooth® audio system ●In the following situations, the system may not function. • The portable player does not support Bluetooth® • The cellular phone is located outside the service area • The Bluetooth® device is switched off • The Bluetooth® device h ...

    Sound quality is bad only when playing tape
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    Horn
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