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Home >> Subaru >> 2020 >> Crosstrek Base, Automatic CVT Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 6 (P-HEV Hybrid Powertrain Control System (Diagnostics) (1 Of 2)) >> Diagnostic Procedure with Diagnostic Trouble Code (DTC) >> DTC P058A-01: Auxiliary Battery Monitor Module General Electrical Failure >> General Description >> Explanation Of Circuits

Explanation Of Circuits

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Battery (12V) sensor detects voltage, current and temperature of Battery (12V). Charging condition is calculated from the voltage and current, and output to Hybrid vehicle control ECU assembly. Based on this signal, Hybrid vehicle control ECU assembly issues a command for output voltage to DC/DC Converter. Also, Battery (12V) temperature is calculated from the change in resistance value of the thermistor incorporated in Battery (12V) sensor, and output to Hybrid vehicle control ECU assembly. Based on this signal, Hybrid vehicle control ECU assembly decreases the charging current, when Battery (12V) temperature is high, in order to protect Battery (12V).

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