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Home >> Toyota >> 2022 >> Corolla Cross L, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 30 (Hybrid Battery System - Diagnostic Codes (2 Of 2) & Circuit Tests) >> Hybrid Battery System >> DTC U0100-87: Lost Communication with ECM/PCM "A" Missing Message [11/2022 - ] >> Monitor Description

Monitor Description

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

If the battery ECU assembly detects a problem with CAN communication with the ECU, it will illuminate the MIL and store a DTC.

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