Avalon XL V6-3.0L (1MZ-FE) (1997)
Main Relay (Computer/Fuel System): Testing and Inspection
ECM Power Source Circuit
ECM Power Source Circuit
CIRCUIT DESCRIPTION
When the ignition switch is turned ON, battery positive voltage is applied to the coil, closing the contacts of the EFI main relay (Marking: EFI)
and supplying power to the terminals +B of the ECM.
WIRING DIAGRAM
Step 1
Step 2