Toyota Corolla (E170): Using the steering wheel switches to change audio source

The audio source changes as follows each time the “MODE/HOLD” switch is pressed.

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    Circuit description
    The ecm compares the two waveforms of the heated oxygen sensors located before and after the catalyst to determine whether or not the catalyst performance has deteriorated. Air–fuel ratio feedback compensation keeps the waveform of the heated oxygen sensor in front of the catalyst alterna ...

    How to check and change detailed Bluetooth® settings
    1 Display the “Bluetooth* Setup” screen. 2 Select “System Settings”. 3 The following screen is displayed: 1 Bluetooth® Power on/off You can change Bluetooth® function on/off 2 Bluetooth® Name 3 Change PIN-code 4 Bluetooth® Address 5 Display Phone Status You can set the system ...

    Inspection procedure
    1 Inspect ecm(+b voltage) Turn the ignition switch on.  measure the voltage between the terminals of the e4 and e6 ecm connectors. Standard: 2 Check harness and connector(ecm – body ground) Disconnect the e4 ecm connector. check the resistance between the wire ...