DESCRIPTION The stereo component amplifier assembly receives a vehicle speed signal from the combination meter assembly to control the ASL function. HINT:
WIRING DIAGRAM PROCEDURE
(a) Check the input waveform.
(1) Remove the stereo component amplifier assembly with the connector(s) still connected. (2) Connect an oscilloscope to terminal G8-11 (SPD) and body ground. (3) Turn the power switch on (IG). (4) Turn a wheel slowly. (5) Check the signal waveform according to the condition(s) in the table below.
OK: The waveform is similar to that shown in the illustration. HINT: When the system is functioning normally, one wheel revolution generates 4 pulses. As the vehicle speed increases, the width indicated by (A) in the illustration narrows.
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Toyota Avalon (XX50) 2019-2022 Service & Repair Manual > Climate Control Seat System(for Hv Model): Climate Control Seat System does not Operate
DESCRIPTION When the power switch is on and the climate control switch (radio and display receiver assembly) is operated, the air conditioning amplifier assembly receives climate control switch position signals and then sends airflow amount signals to each seat cushion climate control blower. WIRING ...