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Home >> Lexus >> 1995 >> ES 300 V6-3.0L (1MZ-FE) >> Repair and Diagnosis >> Relays and Modules >> Relays and Modules - Powertrain Management >> Relays and Modules - Computers and Control Systems >> Engine Control Module >> Testing and Inspection >> Component Tests and General Diagnostics >> ECM Power Source Circuit >> Description
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Description

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 and supplying power to the terminal +B of the ECM.

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