Toyota Corolla (E170): What to do if... (Troubleshooting)

If there is a problem with the hands-free system or a Bluetooth® device, first check the table below.

► When using the hands-free system with a Bluetooth® device

► When registering/connecting a cellular

► When registering/connecting a cellular phone

► When making/receiving a call

► When making/receiving a call

► When using the phonebook

► When using the phonebook

► When using the Bluetooth® message function

► When using the Bluetooth® message function

► In other situations

► In other situations

Bluetooth® (Multimedia system)

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    Sound quality is bad in all modes (volume is too low)
    Wiring diagram Inspection procedure 1 Adjust sound quality Adjust the sound quality.  Operate the radio receiver assy to adjust the sound quality. Standard: malfunction disappear. 2 Compare it with another car of same model Compare it with another vehicle of the same mo ...

    Using the voice command system (Multimedia system)
    Voice command system The voice command system enables the hands-free system to be operated using voice commands. Operations of the voice command system can be performed by selecting the menu corresponding to each function on the screen. Even if any menu is selected, commands displayed on all ...

    Circuit description
    The intake air temperature (iat) sensor, mounted on the mass air flow (maf) sensor, monitors the intake air temperature. The iat sensor has a thermistor that varies its resistance depending on the temperature of the intake air. When the air temperature is low, the resistance in the thermisto ...