ON-VEHICLE INSPECTION PROCEDURE 1. INSPECT MASS AIR FLOW METER SUB-ASSEMBLY HINT: Perform "Inspection After Repair" after replacing the mass air flow meter sub-assembly. Click here (a) Read the value of Data List item "Mass Air Flow Sensor" using the Techstream. NOTICE: Perform the inspection of the mass air flow meter sub-assembly while it is installed to the air cleaner cap sub-assembly (installed to the vehicle). (1) Connect the Techstream to the DLC3. (2) Start the engine. (3) Turn the Techstream on. (4) Enter the following menus: Powertrain / Engine / Data List / Mass Air Flow Sensor. Powertrain > Engine > Data List
(5) According to the display on the Techstream, read the Data List when the engine is running. Standard Condition:
If the result is not as specified, replace the mass air flow meter sub-assembly. If the result is within the specified range, remove and inspect the mass air flow meter sub-assembly. Click here 2. PERFORM INITIALIZATION (a) Perform "Inspection After Repair" after replacing the mass air flow meter sub-assembly. Click here |
Toyota Avalon (XX50) 2019-2022 Service & Repair Manual > Audio And Visual System(for Hv Model): Vehicle Speed Signal Circuit between Radio Receiver and Combination Meter
DESCRIPTION This circuit is necessary for the Automatic Sound Levelizer (ASL) built into the radio and display receiver assembly. The Automatic Sound Levelizer (ASL) function automatically adjusts the audio system volume in order to compensate for increased vehicle noise (vehicle noise tends to incr ...
