DESCRIPTION This DTC is stored when an UART communication error occurs between the stereo component equalizer assembly and stereo component amplifier assembly.
HINT: *: Malfunction monitoring is not performed under the following conditions, in order to prevent erroneous detection.
WIRING DIAGRAM PROCEDURE
(a) Clear the DTCs. Body Electrical > Active Noise Control > Clear DTCs
(a) Check for DTCs. Body Electrical > Active Noise Control > Trouble CodesOK: DTC B1AA187 is not output.
(a) Disconnect the G68 stereo component equalizer assembly connector. (b) Disconnect the G69 stereo component amplifier assembly connector. (c) Measure the resistance according to the value(s) in the table below. Standard Resistance:
(a) Replace the stereo component amplifier assembly with a new or known good one. Click here
(a) Clear the DTCs. Body Electrical > Active Noise Control > Clear DTCs
(a) Check for DTCs. Body Electrical > Active Noise Control > Trouble CodesOK: DTC B1AA187 is not output.
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Toyota Avalon (XX50) 2019-2022 Service & Repair Manual > Cylinder Head: Repair
REPAIR CAUTION / NOTICE / HINT HINT: Use the same procedure for bank 1 and bank 2. The following procedure is for bank 2. PROCEDURE 1. REPAIR INTAKE VALVE SEAT NOTICE: While repairing the intake valve seat, make sure to constantly check the valve seat width and valve seating position. Release the cu ...