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Home >> Toyota >> 2021 >> Prius 2020 Edition >> Repair and Diagnosis >> External Pages >> Different car >> Section 264 (Hybrid Battery System - Diagnostic Codes (P1AC4-U1150) & Circuit Tests (Lithium-Ion)) >> HYBRID BATTERY SYSTEM (for LITHIUM-ION BATTERY) >> ECU Power Source Circuit [08/2020 - ] >> Description

ECU Power Source Circuit [08/2020 - ]: Description

WARNING: This page is about a different car, the 2022 Toyota Avalon and 2021 Toyota Avalon. However, it is still accessible from the selected car via links, so may be relevant.

If the power switch is on (IG), the battery ECU assembly applies current to the MREL terminal to turn the IGCT relay on. This supplies power to the IGCT terminals.

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