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Home >> Lexus >> 2007 >> RX 400h AWD >> Repair and Diagnosis >> Hybrid/Electric Powertrain >> Testing and Diagnosis >> Hybrid Vehicle Control (P310) - RX400H - DTC P0A78-266 Through P0A79-812 >> DTC P0A78-278 Drive Motor "A" Inverter Performance; DTC P0A78-280 Drive Motor "A" Inverter Performance >> Monitor Description

Monitor Description

The MG ECU monitors the motor inverter over-voltage (OVH) signal line. If the MG ECU detects an open or short malfunction of the OVH signal circuit, the HV control ECU illuminates the MIL and sets a DTC.