Hyundai Ioniq: High Voltage Battery Control System / Pre Charge Relay. Description and operation
The Power Relay Assembly (PRA) consists of the positive and negative main relays, pre-charge relay, pre-charge resistor and battery current sensor. It is located inside the battery pack assembly and controls the high voltage power circuit between the high voltage battery and inverter by the control signal of BMS ECU.
[PRA Operation Sequence]
Removal
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Be sure to read and follow the "General Safety Information and Caution" before doing any work related with the high voltage system...
Specification
Item
Specification
ContactRated Voltage (V)450Rated Current (A)20CoilOperating Voltage (V)12Resistance (Ω)40...
Other information:
C..
Inspection1.Turn the ignition switch OFF.2.Disconnect the PCSV connector.3.Measure resistance between the PCSV terminals 1 and 2.4.Check that the resistance is within the specification. Specification : Refer to "Specification"Removal1.Turn the ignition switch OFF and disconnect the battery negative (-) cable...
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risks of the air bag system. Be sure to read all of the information about the air
bags that are installed on your vehicle in this Owners Manual.
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