Hyundai Ioniq: High Voltage Battery System / Power Relay Assembly (PRA). 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]


Check the target charging voltage when replacing with a new module Fault Code1.Turn OFF the ignition switch.2.Connect the diagnostic tool device to the self-diagnosis connector (DLC)...
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...
Other information:
■ Hybrid vehicle
■ Plug-in hybrid vehicle
The high-voltage battery cooling duct is located on the left side of the rear
seats.
The cooling duct cools down the high-voltage battery. When the highvoltage battery
cooling duct is blocked, the high-voltage battery may be overheated and the vehicle
performance may become limited and set a hybrid warning lamp...
DescriptionThe auto defogging sensor is installed on the front window glass. The sensor judges and sends signal if moisture occurs to blow out wind for defogging. The air conditioner control module receives signal from the sensor and restrains moisture and eliminate defog by controlling the intake actuator, A/C, auto defogging actuator, blower motor rpm, and mode actuator...
Categories

1. Door lock/unlock button
2. Driver position memory system
3. Side view mirror control switch
4. Central door lock switch
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