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Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 60 (Hybrid Control System (AWD) - Circuit Tests (2 Of 2)) >> HYBRID CONTROL SYSTEM (for AWD) >> ECU Power Source Circuit [12/2019 - 11/2023] >> Description

ECU Power Source Circuit [12/2019 - 11/2023]: Description

WARNING: This page is about a different variant/trim than selected.

If the ignition switch is ON, the hybrid vehicle control ECU applies current to the MREL terminal to turn the IGCT relay on. This supplies power to the +B1 and +B2 terminals.

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