Toyota Yaris: Active Noise Control System / ANC ECU Audio Amplifier Integrated Circuit (B1AA000,B1AA044)
DESCRIPTION
This DTC are stored when a malfunction occurs in the stereo component equalizer assembly.
DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
B1AA000 | ANC ECU Audio Amplifier Integrated Circuit | Stereo component equalizer assembly malfunction | Stereo component equalizer assembly |
B1AA044 | ANC ECU EEPROM Data Memory Failure | Stereo component equalizer assembly malfunction | Stereo component equalizer assembly |
PROCEDURE
(a) Clear the DTCs.
Body Electrical > Active Noise Control > Clear DTCs
NEXT |
| |
(a) Check for DTCs.
Body Electrical > Active Noise Control > Trouble Codes
Result | Proceed to |
DTC B1AA000 and B1AA044 are not output | A |
DTC B1AA000 and B1AA044 are output | B |
A |
| USE SIMULATION METHOD TO CHECK |
B |
| REPLACE STEREO COMPONENT EQUALIZER ASSEMBLY |
DESCRIPTION These DTCs are stored when a malfunction occurs in the active noise control microphone LH system. DTC No. Detection Item DTC Detection Condition Trouble Area B1AA296 Front Left Microphone Circuit Component Internal Failure Stereo component equalizer assembly detects malfunction in active noise control microphone LH for 4 seconds or more continuously when engine speed is 1200 rpm or more*
Harness or connector
Active noise control microphone LH
Stereo component equalizer assembly
B1AA31C Front Left Microphone Circuit Circuit Voltage Out of Range Stereo component equalizer assembly detects active noise control microphone LH connection malfunction for 4 seconds or more continuously*
Harness or connector
Active noise control microphone LH
Stereo component equalizer assembly
HINT: *: Malfunction monitoring is not performed under the following conditions, in order to prevent erroneous detection...
Other information:
Your vehicle’s suspension and underbody can be damaged if
driven on rough/uneven roads or over speed bumps at excessive speeds. Use care
and reduce speed when traveling on
rough/uneven roads or over speed bumps.
Use care not to damage the vehicle’s underbody, bumpers or muffler(s) when
driving under the following conditions:
Ascending or descending a slope with a sharp transition angle
Ascending or descending a driveway or trailer ramp with a sharp
transition angle
NOTICE
This vehicle is equipped with low profile tires allowing class-leading
performance and handling...
DESCRIPTION The fuel pump circuit consists of the ECM, fuel pump and fuel pump control ECU (which operates the fuel pump). Based on the engine output, the ECM determines the fuel pump speed. The speed is then converted to a duty signal and sent to the fuel pump control ECU...
Categories
WARNING
When removing the fuel-filler cap, loosen the cap slightly and wait
for
any hissing to stop, then remove it
Fuel spray is dangerous. Fuel can burn skin and eyes and cause illness
if
ingested. Fuel spray is released when there is pressure in the fuel tank and
the fuel-filler cap is removed too quickly.
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