Toyota Corolla (E120): Circuit description

Wiring diagram

Wiring diagram

Inspection procedure

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    Receiving a phone call
    Answering the phone Press the off-hook switch. Refusing a call Press the on-hook switch. Receiving a call when on another call Press the off-hook switch. Pressing the off-hook switch again returns you to the previous call. Adjusting the ringtone volume when receiving a call Change the ringto ...

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    How to proceed with troubleshooting
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