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 Owners Manual > Driving procedures: Automatic
transmission
Shifting the shift lever While the engine switch is in IGNITION ON mode and the brake pedal depressed*, shift the shift lever while pushing the shift release button on the shift knob. Shift the shift lever while pushing the shift release button on the shift knob. Shift the shift lever normally. When ...