DESCRIPTION This DTC is output when a malfunction has occurred in the engine pulse signal system from the ECM.
HINT: *: Malfunction monitoring is not performed under the following conditions, in order to prevent erroneous detection.
WIRING DIAGRAM ![]() CAUTION / NOTICE / HINT NOTICE: Refer to PROCEDURE
(a) Clear the DTCs. Body Electrical > Active Noise Control > Clear DTCs
(a) Check for DTCs. Body Electrical > Active Noise Control > Trouble CodesOK: DTC P033531 is not output.
(a) Disconnect the G68 stereo component equalizer assembly connector. (b) Disconnect the A18 ECM connector. (c) Measure the resistance according to the value(s) in the table below. Standard Resistance:
(a) According to the table and using an oscilloscope, measure the waveform with the stereo component equalizer assembly connected. ![]()
OK: The waveform is similar to that shown in the illustration. HINT: The oscilloscope waveform shown in the illustration is an example for reference only. The waveform fluctuates according to engine speed.
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Toyota Avalon Service & Repair Manual > Air Conditioning System(for Gasoline Model): Blower Motor Circuit
DESCRIPTION The blower motor with fan sub-assembly is operated by signals from the air conditioning amplifier assembly. Blower motor speed signals are transmitted in accordance with changes in the duty ratio. If the airflow volume is low or the blower speed cannot be changed, the following factors m ...