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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 P0A94-588 DC / DC Converter Performance >> Description

DTC P0A94-588 DC / DC Converter Performance: Description

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

The boost converter switches the power transistor on and off based on drive signals received from the MG ECU, in order to change the current flowing into the reactor. Also, the boost converter regulates the duration of the switching time through Pulse Width Modulation (PWM) control, in order to control the boosting voltage. The MG ECU monitors the drive signals and detects a malfunction.

DTC DETECTION CONDITION AND TROUBLE AREA

DTC No. INF Code DTC Detection Condition Trouble Area
P0A94 588 Abnormality in boost converter PWM circuit
  • Wire harness or connector
  • w/ converter inverter assembly (MG ECU)