Kia Soul EV Owner's Manual Quiz
Electric Vehicle Battery System

Precharge Relay Description and Operation

In this manual: Electric Vehicle Battery System
General Information — 17Maintenance — 17Drive Shaft and Axle — 15Suspension System — 36Steering — 24Restraints — 48Brake System — 37Body (Interior and Exterior) — 207Body Electrical System — 203Heating, Ventilation, and Air Conditioning — 80Electric Vehicle Battery System — 115
~1min read

Description

Installed in the Power Relay Assembly (PRA), the precharge relay connects the high voltage circuit when precharging the inverter capacitor. When the IG is ON, the current flowing through the precharge relay and resistor charges the capacitor in the inverter, and when the capacitor is fully charged, the precharge relay turns OFF. [With High Voltage Battery Heating System]
1. Main Relay (+)
2. Main Relay (-)
3. Precharge Relay
4. Precharge Resistor		 5. Battery Current Sensor
6. High Voltage Battery Heater Relay
7. High Voltage Battery Heater Fuse

[Without High Voltage Battery Heating System]
1. Main Relay (+)
2. Main Relay (-)
3. Precharge Relay		 4. Precharge Resistor
5. Battery Current Sensor

Operation

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A quick Kia Soul EV Owner's Manual quiz: every answer comes with an explanation and a link to the manual page.