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P0A3F-243, P0A40-500, P0A41-245 HBC-209 < COMPONENT DIAGNOSIS > D E F G H I J K L M A B HBC N O P P0A3F-243, P0A40-500, P0A41-245 Description INFOID:0000000004211885 A resolver is a sensor that detects the position of the magnetic poles, which are indispensable for ensuring highly efficient control of MG2 and MG1. The resolver stator contains an excitation coil and 2 detection coils. The gap between the stator and rotor changes as the rotor turns because the rotor is oval shaped. An alternating current with a predetermined fre- quency flows through the excitation coil, and detection coils S and C output alternating currents in accordance with the sensor rotor position. The MG ECU detects the absolute position of the rotor according to the phases of detection coils S and C and the height of their waveforms. Furthermore, the CPU calculates the amount of change in the position within a predetermined length of time, in order to use the resolver as a speed sensor. The MG ECU monitors signals output from the motor resolver and detects malfunctions. DTC Logic INFOID:0000000004211886 DTC DETECTION LOGIC The MG ECU monitors the motor resolver output signal. If the MG ECU detects output signals that are out of the normal range or specification, it will conclude that there is a malfunction in the motor resolver. The hybrid vehicle control ECU will illuminate the MIL and set a DTC. JMCIA0098GB DTC No. INF Code Trouble diagnosis name DTC detecting condition Possible cause P0A3F 243 Drive Motor “A” Position Sensor Interphase short in motor resolver • Wire harness or connector P0A40 500 Drive Motor “A” Position Sensor Motor resolver output is out of nor- • Wire harness or connector P0A41 245 Drive Motor “A” Position Sensor Open or short in motor resolver • Wire harness or connector |