Kia Soul EV: High Voltage Battery Control System / High Voltage Battery Heater Relay Repair procedures

Kia Soul EV (PS EV) 2015-2020 Service Manual / EV Battery System / High Voltage Battery Control System / High Voltage Battery Heater Relay Repair procedures

Inspection

•	Be sure to read and follow the “General Safety Information and Caution” before doing any work related with the high voltage system. Failure to follow the safety instructions may result in serious electrical injuries.

•	Be sure to shut off the high voltage before doing any work related with the high voltage system(Refer to "High Voltage Shut-off Procedure"). Failure to follow the safety instructions may result in serious electrical injuries.

When removing the battery pack assembly to inspect the battery system, it can be connected to vehicle by using the SST 0K918-E4100, 0K375-E4100, 0K375-E4200.

High Voltage Battery Heater Relay Switch Resistance

[Using multi tester (Relay OFF)]

Inspect the high voltage high voltage battery heater relay by using multi tester when the relay is off

1.	Shut off the high voltage. (Refer to Battery Control System - "High Voltage Shut-off Procedure")

2.	Remove the power relay assembly (PRA). (Refer to High Voltage Battery System - "Power Relay Assembly (PRA)")

Measure the resistance between the heater relay (+) switch terminal and the (+) power terminal which is connected to high voltage joint box.

Specification : ??(20°C)

[Using GDS (Relay ON)]

1.	Shut off the high voltage. (Refer to Battery Control System - "High Voltage Shut-off Procedure")

2.	Remove the high voltage battery upper case. (Refer to High Voltage Battery System - "Case")

3.	Connect the SST(0K918-E4100, 0K375-E4100, 0K375-E4200) to the vehicle.

4.	Connect the GDS to DLC.

5.	Turn the ignition swtich ON.

Activate the battery heater relay by using "Actuation Test" on the GDS as shown in the illustration below.

When the relay is ON, there is a relay operation sound.

High Voltage Battery Heater Relay Coil Resistance

1.	Shut off the high voltage. (Refer to Battery Control System - "High Voltage Shut-off Procedure")

2.	Remove the power relay assembly (PRA). (Refer to High Voltage Battery System - "Power Relay Assembly (PRA)")

Measure the resistance between the No.6 and No.7 of power relay assembly connector.

Specification : 104.4 ~ 127.6 ?

Removal

Main Relay, Pre Charge Relay, Pre Charge Resistor, Battery Current Sensor, High Voltage Battery Heater Relay and the High Voltage Battery Heater Fuse are integrated in the Power Relay Assembly (PRA). So Refer to the removal procedure of Power Relay Assembly (PRA).

Installation

High Voltage Battery Heater Relay Schematic Diagrams

System Circuit Diagram Circuit Diagram ...

High Voltage Battery Heater Fuse Specifications

Specification ItemSpecificationCurrent (A)10 ...

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