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Home >> Toyota >> 2012 >> Highlander Limited, FWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 115 (Hybrid Vehicle Control System (Diagnostic Codes (P0ADB-227 - U0424-537) & Circuit Tests)) (Hybrid)) >> Hybrid Control System >> DTC P310B-662: Communication Error from MG2 to MGR >> Monitor Description

Monitor Description

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The MG ECU performs many diagnostic tests to verify proper operation of internal ECU systems. In one of those diagnostics, the MG ECU checks the result of the motor CPU self-test. If the MG ECU detects a "Fail" from the motor CPU self-test, it will conclude that there is an internal malfunction in the motor CPU. The hybrid vehicle control ECU will illuminate the MIL and set a DTC.

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