HYBRID CONTROL SYSTEM, Diagnostic DTC:P0D2F-266 and P0D30-267

The inverter contains a three-phase bridge circuit, which consists of 6 power transistors (IGBTs) each for the generator (MG1), motor (MG2) and rear motor (MGR)*. The inverter converts high-voltage direct current from the HV battery into three-phase alternating current for the generator (MG1), motor (MG2) and rear motor (MGR)*; it also converts three-phase alternating current supplied by generator (MG1), motor (MG2) and rear motor (MGR)* into direct current for the HV battery. The MG ECU controls the actuation of the power transistors (IGBTs). The inverter transmits information necessary for control, such as amperage and voltage, to the MG ECU.

*: for AWD

The MG ECU uses an inverter voltage sensor, which is built into the inverter, to detect boosted high voltage (VH) to allow control of the voltage boost.

The inverter voltage sensor outputs voltage that fluctuates between 0 to 5 V according to changes in VH.

The MG ECU monitors the inverter voltage sensor and detects the following malfunctions.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	MIL	Warning Indicate
P0D2F-266	Drive Motor "A" Inverter Voltage Sensor Circuit Low	Inverter voltage (VH) signal is stuck low: DTC stored when the VH sensor signal is excessively low. (1 trip detection logic)	Inverter with converter assembly	Comes on	Master Warning Light: Comes on
P0D30-267	Drive Motor "A" Inverter Voltage Sensor Circuit High	Inverter voltage (VH) signal is stuck high: DTC stored when the VH sensor signal is excessively high. (1 trip detection logic)	Inverter with converter assembly	Comes on	Master Warning Light: Comes on

Table 1. Related Data List

DTC No.	Data List
P0D2F-266	VH-Voltage after Boosting
P0D30-267