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) Turn the power switch on (IG). (3) Turn the Techstream on. (4) Put the engine in Inspection Mode (Maintenance Mode). Powertrain > Hybrid Control > Utility
(5) Start the engine. (6) Enter the following menus: Powertrain / Engine / Data List / Mass Air Flow Sensor. Powertrain > Engine > Data List
(7) 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 Service & Repair Manual > Occupant Classification System(for Hv Model): Yaw Rate Sensor Module Malfunction (B1798,B1799)
DESCRIPTION The occupant detection ECU receives signals from the acceleration sensor (airbag ECU assembly) and skid control ECU (brake booster with master cylinder assembly) via CAN communication. DTC No. Detection Item DTC Detection Condition Trouble Area B1798 Yaw Rate Sensor Module Malfunction Ac ...