Optimal use of the audio system
Sound quality (treble/bass) and volume balance can be adjusted.
1 Displays the current mode 2 Changes the following setting • Sound quality and volume balance
The sound quality and balance setting can be changed to produce the best sound.
• Automatic Sound Levelizer on/ off
3 Selects a mode
Using the audio control function
■ Changing sound quality modes
1 Press .
2 Turn to select “Sound Setting”.
3 Press .
4 Turn to select the desired mode.
“BASS”, “TREBLE”, “FADER”, “BALANCE”, or “ASL” 5 Press .
■ Adjusting sound quality
Turning adjusts the level.
*:The sound quality level is adjusted individually in each audio mode.
■ Adjusting the Automatic Sound Levelizer (ASL)
When ASL is selected, turning to the right changes the amount of ASL in the order of “LOW”, “MID” and “HIGH”.
Turning to the left turns ASL off.
ASL automatically adjusts the volume and tone quality according to the vehicle speed.
Inspection procedure
1 Check connector
Disconnect the negative (–) terminal cable from the battery, and wait at
least for 90 seconds.
check the connection of the combination meter connector and the
airbag sensor assy center connectors.
Ok:
the connectors are connected.
2 Check combination me ...
Circuit description
The side squib (lh) circuit consists of the airbag sensor assy center and
front seat airbag assy (lh).
It causes the srs to deploy when the srs deployment conditions are satisfied.
Dtc b0115/47 is recorded when a short is detected in the side squib (lh)
circuit.
Wiring diagram
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Symptom confirmation and diagnostic trouble code
Hint:
the diagnostic system in corolla has various functions. The first
function is the diagnostic trouble
code (dtc) check, in which a malfunction in the signal circuits to the ecu
is stored in code form in
the ecu memory. Another function is the input signal check, which checks if
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