Toyota Corolla (E170): Audio unit

1 Bluetooth® connection status If “BT” is not displayed, the Bluetooth® audio/phone cannot be used.

2 Display
A message, name, number, etc. is displayed.

Lower-case characters and special characters cannot be displayed.

3 Displays the set up menu 4 Selects items such as menu and number Turn: Selects an item
Press: Inputs the selected item 5 Off-hook switch
Turns the hands-free system on/starts a call 6 On-hook switch
Turns the hands-free system off/ends a call/refuses a call 7 Displays information that is too long to be displayed at one time on the display (press and hold)
8 Selects speed dials

Microphone

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    Circuit description
    The vapor pressure sensor, vsv for canister closed valve (ccv), vsv for pressure switching valve are used to detect abnormalities in the evaporative emission control system. The ecm decides whether there is an abnormality in the evaporative emission control system based on the vapor pressur ...

    Circuit description
    The throttle position sensor is mounted in the throttle body and detects the throttle valve opening angle. When the throttle valve is fully closed, a voltage of approximately 0.3 To 1.0 V is applied to terminal vta of the ecm. The voltage applied to terminal vta of the ecm increases in pro ...

    Inspection procedure
    1 Inspect terminal voltage(idl) Remove the cruise control ecu assy with connector still connected.  disconnect the ecm connector.  turn the ignition switch to on.  measure voltage between terminal 13 (idl) of cruise control ecu assy connector and body ground when the ...