Toyota Corolla (E170) 2014–2019 Owners Manual / Interior features / Setup (Multimedia system) / Automatic sound leveliser (ASL)
Toyota Corolla (E170): Automatic sound leveliser (ASL)
1 Select “Automatic Sound Levelizer”.
2 Select “High”, “Mid”, “Low” or “Off”.
■The sound quality level is adjusted individually
The treble, mid and bass levels can be adjusted for each audio mode separately.
■About Automatic Sound Leveliser (ASL)
ASL automatically adjusts the volume and tone quality according to the vehicle speed.
Other materials:
Inspection
1. Intake air flow meter sub–assy
Inspect the intake air flow meter resistance.
Using an ohmmeter, measure the resistance between
terminals tha and e2.
Resistance:
at –20 c (–4 f) 13.6 To 18.4 KΩ
at 20 c (68 f) 2.21 To 2.69 KΩ
at 60 c (140 f) 0.49 To 0.67 ...
Check short circuit
If the wire harness is ground shorted as shown in fig. 5,
Locate the section by conducting a resistance check with
the body ground in step (b).
Check the resistance with the body ground.
Disconnect connectors a and c and measure the
resistance between terminals 1 and 2 ...
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 ...


