Toyota Corolla (E170) 2014–2019 Owners Manual / Interior features / Using an external device / Using the AUX port
Toyota Corolla (E170): Using the AUX port
This port can be used to connect a portable audio device and listen to it through
the vehicle’s speakers. Press 
until
“AUX” is displayed.
Connecting a portable player
■Operating portable audio devices connected to the audio system
The volume can be adjusted using the vehicle's audio controls. All other adjustments must be made on the portable audio device itself.
■When using a portable audio device connected to the power outlet
Noise may occur during playback. Use the power source of the portable audio device.
Other materials:
Audio & visual system
Preparation
Sst
Recomended tools
Equipment
...
Sound quality is bad only when cd is played(volume is
too low)
Inspection procedure
1 Replace cd with another and recheck
Replace the cd with another and recheck.
Check the installation condition of the radio receiver assembly.
Standard: malfunction disappear.
Check and replace radio receiver assy ...
Inspection procedure
Hint:
if dtc p0441 (purge flow), p0446 (vsv for ccv or vsv for pressure
switching valve), p0451, p0452
or p0453 is output with dtc p0442 or p0456 , first troubleshoot
dtc p0441, p0446, p0451, p0452 or p0453. If no malfunction is detected,
troubleshoot dtc
p0442 or p0456 next.
...