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
| 1. | CLEAR DTC |
(a) Clear the DTCs.
Body Electrical > Active Noise Control > Clear DTCs
|
| 2. | CHECK FOR DTC |
(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 |
Front Left Microphone Circuit Component Internal Failure (B1AA296,B1AA31C)
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:
Toyota Yaris XP210 (2020-2026) Reapir and Service Manual: Inspection
INSPECTION PROCEDURE 1. INSPECT GENERATOR PULLEY WITH CLUTCH (a) Hold the center of the generator pulley with clutch, and confirm that the outer ring turns counterclockwise and does not turn clockwise. OK: The outer ring turns counterclockwise and does not turn clockwise...
Toyota Yaris XP210 (2020-2026) Reapir and Service Manual: Lost Communication With Brake System Control Module(ch2) Missing Message (U117087)
DESCRIPTION The brake actuator assembly communicates with the ECM and engine stop and start ECU. When the brake actuator assembly does not receive data from the engine stop and start ECU, the engine stop and start ECU stores DTC U117087. DTC No. Detection Item DTC Detection Condition Trouble Area DTC Output from U117087 Lost Communication With Brake System Control Module(ch2) Missing Message No communication from the brake actuator assembly continues...
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Fuel-Filler Lid and Cap
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.
