REMOVAL CAUTION / NOTICE / HINT The necessary procedures (adjustment, calibration, initialization, or registration) that must be performed after parts are removed and installed, or replaced during mass air flow meter sub-assembly removal/installation are shown below. Necessary Procedures After Parts Removed/Installed/Replaced
PROCEDURE 1. REMOVE MASS AIR FLOW METER SUB-ASSEMBLY
(b) Remove the 2 screws and mass air flow meter sub-assembly from the air cleaner cap sub-assembly. NOTICE: If the mass air flow meter sub-assembly has been struck or dropped, replace it. |
Toyota Avalon (XX50) 2019-2022 Service & Repair Manual > Sfi System: ECM Power Source Circuit
DESCRIPTION When the engine switch is turned on (IG), the battery voltage is applied to the IGSW terminal of the ECM. The output signal from the MREL terminal of the ECM causes a current to flow to the coil of the EFI-MAIN NO. 1 relay, closing the contacts and supplying power to terminals +B and +B2 ...
