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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 P0A7A-309 Through P0A94-589 >> DTC P0A94-587 DC / DC Converter Performance >> Description

DTC P0A94-587 DC / DC Converter Performance: Description

Refer to the description of the boost converter. (See DESCRIPTION )

The MG ECU uses a voltage sensor that is built into the boost converter to detect the high voltage (VL) before it is boosted. The ECU also uses a battery smart unit to detect HV battery voltage (VB).

DTC DETECTION CONDITION AND TROUBLE AREA

DTC No. INF Code DTC Detection Condition Trouble Area
P0A94 587 Voltages from HV battery voltage (VB) sensor and boost converter voltage (VL) sensor deviate
  • w/ converter inverter assembly (MG ECU)
  • Battery smart unit