Hyundai IONIQ I (2016-2024) main battery pack Wiring diagrams

3-WAY VALVE CTRL ACTIVE AIR FLAP UNIT BLK WIRE BLK/WHT WIRE BLU WIRE BMS PTC HEATER BMS PTC HTR TEMP SENS GND BMS PTC HTR TEMP SENS SIG BMU+ BRN/BLK WIRE BRN/ORG WIRE BUS BAR COMPUTER DATA LINES SYSTEM COOLING FAN FUSE COOLING FAN MOTOR COOLING FAN RELAY E/R JUNCTION BLOCK E/R-A E/R-D ELECTRIC WATER PUMP (BATTERY) ELECTRIC WATER PUMP (EV) FEEDBACK GRN WIRE GRN/ORG WIRE GRY WIRE HOT AT ALL TIMES HOT W/ MAIN RELAY ENERGIZED I/P-A I/P-F IGPM LEAK CURRENT AUTO CUT DEVICE LEFT ACTIVE AIR FLAP (LEFT SIDE OF FRONT BUMPER FASCIA) LIN MAIN BATTERY MAIN BATTERY PACK MEMORY 2 FUSE MEMORY PWR MULTI FUSE 1 ORG/ WIRE P-CAN HIGH P-CAN LOW PCB BLOCK PNK WIRE PNK/BLK WIRE POWER RELAY ASSEMBLY PWR RAD OUT TEMP SENSOR GND RAD OUT TEMP SENSOR SIG RADIATOR OUTLET TEMPERATURE SENSOR RED WIRE RED/ORG WIRE RELAY ENERGIZED RIGHT ACTIVE AIR FLAP (RIGHT SIDE OF FRONT BUMPER FASCIA) TEMP SENS GND TEMP SENS SIG WHT WIRE YEL WIRE

BATTERY C/FAN BATTERY C/FAN RELAY BLK WIRE BLU WIRE BRN WIRE COMPUTER DATA LINES SYSTEM COOLING FAN FUSE COOLING FAN RELAY E/R JUNCTION BLOCK E/R-A E/R-D ELECTRIC WATER PUMP (HEV) ENGINE CONTROL RELAY GRN WIRE H-CAN HIGH H-CAN LOW HOT AT ALL TIMES INPUT LEFT ACTIVE AIR FLAP MAIN BATTERY PACK MAIN BATTERY PACK BLOWER FAN MEMORY PWR MULTI FUSE 1 MULTI FUSE 2 ON/START ORG/ WIRE P-CAN HIGH P-CAN LOW PCB BLOCK PNK WIRE PNK/BLK WIRE POWER DISTRIBUTION SYSTEM PTC HEATER (LOWER CENTER OF DASH) PTC HEATER 1 FUSE PTC HEATER 1 RELAY PTC HEATER 2 FUSE PTC HEATER 2 RELAY PWR RED WIRE RED/BLU WIRE RED/ORG WIRE RIGHT ACTIVE AIR FLAP SENSOR 2 FUSE YEL WIRE

A/C PRESSURE TRANSDUCER BLK WIRE BLU WIRE BLU/WHT WIRE BMS CONTROL MODULE BRN WIRE CAN HIGH CAN LOW COMP PWR - COMPUTER DATA LINES SYSTEM COOLING FAN CONTROLLER (BEHIND RADIATOR) COOLING FAN CTRL ECM (LEFT REAR OF ENGINE COMPT) ELECTRICAL WATER PUMP FUSE ENGINE CONTROLS SYSTEM ENGINE COOLANT TEMPERATURE SENSOR ENGINE COOLANT TEMPERATURE SENSOR (EHRS) ENGINE CTRL RELAY ENGINE FAN GRN WIRE GRY WIRE GRY/BLK WIRE H-CAN HIGH H-CAN LOW HOT AT ALL TIMES HOT IN ON OR START HYBRID INVERTER I/P-A I/P-C I/P-F IGPM LEAK CURRENT AUTO CUT DEVICE MAIN BATT - MAIN BATTERY PACK MEMORY 2 FUSE MODULE 8 FUSE NCA WIRE ON/START INPUT COOLING FAN RELAY CNTRL ORG/ WIRE P-CAN HIGH P-CAN LOW PNK WIRE PNK/BLK WIRE POWER RELAY ASSEMBLY PWR RED WIRE RED/ORG WIRE RED/WHT WIRE RELAY CNTRL GND RELAY CNTRL MAIN (+) RELAY CNTRL MAIN (+) RELAY CNTRL PRE RELAY CNTRL OBC (+) RELAY CNTRL OBC (-) RELAY CNTRL GND RELAY ON SENSOR GND SENSOR PWR SENSOR SIG SIG SUB BATTERY PACK (IN TRUNK ROOM) SUB BATTERY PACK BLOWER FAN WHT WIRE WTS GND WTS SIG YEL WIRE

BATTERY C/FAN BATTERY C/FAN RELAY BLK WIRE BLU WIRE BMS CONTROL MODULE BRN WIRE C-CAN HIGH C-CAN LOW COMPUTER DATA LINES SYSTEM COOLING FAN FUSE COOLING FAN RELAY E/R JUNCTION BLOCK E/R-A E/R-D ENGINE CONTROL RELAY EWP FUSE GRN WIRE H-CAN HIGH H-CAN LOW HOT AT ALL TIMES LEFT ACTIVE AIR FLAP MAIN BATTERY PACK MAIN BATTERY PACK BLOWER FAN MEMORY PWR MULTI FUSE 1 ON/START INPUT ORG/ WIRE P-CAN HIGH P-CAN LOW PCB BLOCK PNK WIRE PNK/BLK WIRE POWER POWER DISTRIBUTION SYSTEM PWR RED WIRE RED/BLU WIRE RED/ORG WIRE RED/WHT WIRE RELAY CTRL RIGHT ACTIVE AIR FLAP SENSOR 2 FUSE SUB BATTERY PACK SUB BATTERY PACK BLOWER FAN YEL WIRE

ACTIVE AIR FLAP AUX, USB JACK BATTERY FUSE BLOCK BLK WIRE BMU+ BRN WIRE CHARGER LAMP COOLING FAN RELAY CRASH PAD SWITCH DATA LINK CONNECTOR E/R-C ELECTRONIC ATM SHIFT LEVER EPCU EXTERNAL BUZZER FORWARD COLLISION AVOIDANCE ASSIST UNIT FRONT CONSOLE SWITCH FRONT WIPER (LOW) RELAY FRONT WIPER HIGH RELAY HORN (HIGH) HORN (LOW) I/P-E ICM RELAY BOX IGPM IGPM INSTRUMENT CLUSTER IPS CONTROL MODULE LEFT DRL LEFT HEADLAMP LEFT MOOD LAMP LOW VOLTAGE DC-DC CONVERTER LOW-BEAM ASSIST DYNAMIC UNIT MAIN BATTERY CHARGING SWITCH MAIN BATTERY PACK MOOD LAMP MULTI- FUNCTION SWITCH NCA WIRE PCB BLOCK POWER OUTLET RELAY PTC HEATER PTC HEATER HV CABLE SENSOR RIGHT DRL RIGHT MOOD LAMP STEERING WHEEL HEATER SWITCH SUB BATTERY

A/T SHIFT LEVER INDICATOR AUX, USB JACK AUXILIARY BATTERY BATTERY BATTERY FUSE BLOCK BCM BLK WIRE BLK/WHT WIRE BMS ASSEMBLY BMS CONTROL MODULE CHARGER LAMP COOLING FAN RELAY CRASH PAD SWITCH DATA LINK CONNECTOR DTC SHIFT LEVER E/R-C EXTERNAL BUZZER FORWARD COLLISION AVOIDANCE UNIT FRONT WIPER (LOW) RELAY FRONT WIPER HIGH RELAY FUEL FILLER DOOR, BATTERY CHARGE SWITCH GRY/ORG WIRE HORN (HIGH) HORN (LOW) I/P-E IGNITION KEY ILLUM, DOOR WARNING SWITCH IGPM IGPM IGPM INSTRUMENT CLUSTER IPS CONTROL MODULE LEFT CONSOLE SWITCH LEFT DRL LEFT HEADLAMP LEFT MOOD LAMP LOW VOLTAGE DC-DC CONVERTER LOW-BEAM ASSIST DYNAMIC UNIT MAIN BATTERY PACK MAIN BATTERY PACK BLOWER FAN MOOD LAMP MULTI- FUNCTION SWITCH NCA WIRE PCB BLOCK POWER OUTLET RELAY RIGHT CONSOLE SWITCH RIGHT DRL RIGHT MOOD LAMP STEERING WHEEL HEATER SWITCH SUB BATTERY PACK SUB BATTERY PACK BLOWER FAN VESS UNIT W/ HID W/ PDW W/O PDW W/ SMART KEY W/O SMART KEY WIRELESS CHARGER UNIT

BLK/WHT WIRE BLU WIRE BLU/BLK WIRE BLU/ORG WIRE BRN WIRE CELL MONITORING UNIT 6 OPD HI CELL MONITORING UNIT 6 OPD LI CELL MONITORING UNIT 6 RXNL CELL MONITORING UNIT 6 RXPL CELL MONITORING UNIT 6 TXNL CELL MONITORING UNIT 6 TXPL CELL MONITORING UNIT 7 CELL MONITORING UNIT 7 OPD HI CELL MONITORING UNIT 7 OPD LI CELL MONITORING UNIT 7 RXNL CELL MONITORING UNIT 7 RXPL CELL MONITORING UNIT 7 TXNL CELL MONITORING UNIT 7 TXPL CELL MONITORING UNIT 8 CELL MONITORING UNIT 8 OPD HO CELL MONITORING UNIT 8 OPD LO CELL MONITORING UNIT 8 RXNH CELL MONITORING UNIT 8 RXPH CELL MONITORING UNIT 8 TXNH CELL MONITORING UNIT 8 TXPH CELL MONITORING UNIT 9 OPD HO CELL MONITORING UNIT 9 OPD LO CELL MONITORING UNIT 9 RXNH CELL MONITORING UNIT 9 RXPH CELL MONITORING UNIT 9 TXNH CELL MONITORING UNIT 9 TXPH EV BATT MOD 13/14 TEMP GND EV BATT MOD 13/14 TEMP SIG EV BATTERY MODULE 13 EV BATTERY MODULE 14 EV BATTERY MODULE 15 EV BATTERY MODULE 16 EV BATTERY MODULE TEMPERATURE SENSOR 7 FROM BMS CONTROL MODULE (DIAGRAM 7 OF 12) FROM HIGH VOLTAGE CABLE CONNECTED SENSOR (DIAGRAM 5 OF 12) GRN WIRE GRN/ORG WIRE GRY WIRE MAIN BATTERY PACK NCA WIRE ORG/ WIRE ORG/BLK WIRE PNK WIRE RED/BLK WIRE RED/ORG WIRE SENS GND SENS SIG TEMP TO EV BATTERY MODULE 17 (DIAGRAM 11 OF 12) WHT WIRE YEL/GRN WIRE

BLK/WHT WIRE BLU WIRE BLU/BLK WIRE BLU/ORG WIRE BRN WIRE CELL MONITORING UNIT 10 CELL MONITORING UNIT 10 OPD HO CELL MONITORING UNIT 10 OPD LO CELL MONITORING UNIT 10 RXNH CELL MONITORING UNIT 10 RXPH CELL MONITORING UNIT 10 TXNH CELL MONITORING UNIT 10 TXPH CELL MONITORING UNIT 11 OPD HO CELL MONITORING UNIT 11 OPD LO CELL MONITORING UNIT 11 RXNH CELL MONITORING UNIT 11 RXPH CELL MONITORING UNIT 11 TXNH CELL MONITORING UNIT 11 TXPH CELL MONITORING UNIT 8 OPD HI CELL MONITORING UNIT 8 OPD LI CELL MONITORING UNIT 8 RXNL CELL MONITORING UNIT 8 RXPL CELL MONITORING UNIT 8 TXNL CELL MONITORING UNIT 8 TXPL CELL MONITORING UNIT 9 CELL MONITORING UNIT 9 OPD HI CELL MONITORING UNIT 9 OPD LI CELL MONITORING UNIT 9 RXNL CELL MONITORING UNIT 9 RXPL CELL MONITORING UNIT 9 TXNL CELL MONITORING UNIT 9 TXPL EV BATT MOD 19/20 TEMP GND EV BATT MOD 19/20 TEMP SIG EV BATTERY MODULE 17 EV BATTERY MODULE 18 EV BATTERY MODULE 19 EV BATTERY MODULE 20 EV BATTERY MODULE TEMPERATURE SENSOR 10 FROM EV BATTERY MODULE 16 (DIAGRAM 10 OF 12) GRN/ORG WIRE GRY WIRE MAIN BATTERY PACK NCA WIRE ORG/ WIRE PNK WIRE RED/BLK WIRE RED/ORG WIRE SENS GND SENS SIG TEMP TO EV BATTERY MODULE 21 (DIAGRAM 12 OF 12) WHT WIRE YEL/GRN WIRE

BCM BLK WIRE BLK/ORG WIRE BLU WIRE BRN WIRE C-CAN HIGH C-CAN LOW CHARGE CONN DR SW CHARGE CONNECTOR DOOR SWITCH CHARGE CONNECTOR RESISTOR CHARGER LAMP COMPUTER DATA LINES SYSTEM EV FUSE FROM EV BATTERY MODULE 24 (DIAGRAM 12 OF 12) FUSE GRN WIRE GROUND DISTRIBUTION SYSTEM GRY WIRE H-CAN HIGH H-CAN LOW MAIN BATTERY PACK MAIN NEGATIVE RELAY MAIN POSITIVE RELAY NCA WIRE OBC (+) RELAY ORG/ WIRE PNK WIRE POWER RELAY ASSEMBLY PRE CHARGE RELAY PRE-CHARGE RESISTOR RED WIRE RED/WHT WIRE RIGHT END OF DASH) TO BMS CONTROL MODULE (DIAGRAM 7 OF 12) TO HIGH VOLTAGE CABLE CONNECTED SENSOR (DIAGRAM 5 OF 12) WHT WIRE

BATTERY CURRENT SENSOR BLK WIRE BLK/ORG WIRE BLU WIRE BLU/ORG WIRE BLU/WHT WIRE BMS CONTROL MODULE BRN WIRE BRN/ORG WIRE CABLE GND CABLE SIG CAN HIGH CAN LOW CELL MONITORING COMPUTER DATA LINES SYSTEM COOLING FANS SYSTEM CRASH SIG CURRENT SENSOR FROM EV BATTERY MODULE 12 (DIAGRAM 9 OF 12) FROM EV BATTERY MODULE 6 (DIAGRAM 8 OF 12) FROM POWER RELAY ASSEMBLY (DIAGRAM 4 OF 12) FUSE GRN WIRE GRN/BLK WIRE GRY WIRE H-CAN HIGH H-CAN LOW HIGH VOLTAGE CABLE CONNECTED SENSOR MAIN BATTERY PACK NCA WIRE ORG/ WIRE ORG/BLK WIRE P-CAN HIGH P-CAN LOW PNK WIRE PNK/ORG WIRE POWER RAD SW SIG RAD SWITCH 1 RAD SWITCH 2 RAD SWITCH 3 RED WIRE RED/WHT WIRE RELAY CTRL GND RELAY CTRL MAIN + RELAY CTRL OBC + RELAY CTRL PRE SERVICE PLUG SERVICE PLUG GND SERVICE PLUG SIG SUB BATTERY PACK SUB BATTERY PACK TEMPERATURE SENSOR SUPPLEMENTAL RESTRAINTS SYSTEM TEMP GND TEMP SENS GND TEMP SENS SIG TEMP SIG TO CELL MONITORING UNIT 1 (DIAGRAM 7 OF 12) TO CELL MONITORING UNIT 12 (DIAGRAM 12 OF 12) TO EV BATTERY MODULE 1 (DIAGRAM 7 OF 12) TO EV BATTERY MODULE 13 (DIAGRAM 10 OF 12) TO EV BATTERY MODULE 7 (DIAGRAM 8 OF 12) UNIT 1 OPD HO UNIT 1 OPD LO UNIT 12 OPD HI UNIT 12 OPD LI WHT WIRE WHT/BLK WIRE WHT/ORG WIRE YEL WIRE YEL/ORG WIRE