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Home >> Toyota >> 2020 >> Corolla L >> Repair and Diagnosis >> External Pages >> Different car >> Section 361 (Hybrid Control System (Li-Ion W/ Pa10) - Diagnostic Codes (3 Of 3) & Circuit Tests) >> HYBRID CONTROL SYSTEM (for LITHIUM-ION BATTERY with PA10) >> ECU Power Source Circuit [09/2022 - ] >> Description

ECU Power Source Circuit [09/2022 - ]: Description

WARNING: This page is about a different car, the 2025 Toyota Corolla, 2024 Toyota Corolla, and 2023 Toyota Corolla. However, it is still accessible from the selected car via links, so may be relevant.

If the ignition switch is ON, the hybrid vehicle control ECU applies current to the MREL terminal to turn the IGCT-MAIN NO. 1 relay on. This supplies power to the +B1 terminal.

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