P0A1B / INF511

P0A1B-511, P0A1B-512, P0A1B-661, P0A1B-786, P0A1B-794

Description
The inverter with converter assembly (MG ECU) monitors its internal operation and detects malfunctions.

DTC Logic

DTC Detection Logic
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.






Diagnostic Procedure

Step 1-2: