Hyundai Santa Fe (TM): 4WD Control System / Schematic diagrams

Hyundai Santa Fe (TM) 2019-2023 Service and Repair Manual / 4 Wheel Drive (4WD) System / 4WD Control System / Schematic diagrams

Circuit Diagram
4WD ECU Connector

4WD ECU Pin Function
Pin
Function
1
 Motor B
2
 Motor A
3
 -
4
 -
5
 Pressure sensor (power)
6
 -
7
 IG1
8
 Motor shield wire ground
9
 Battery ground
10
 Battery power
11
 -
12
 -
13
 -
14
 Pressure sensor signal
15
 Pressure sensor ground
16
 -
17
 CAN 1 HIGH
18
 CAN 1 LOW
19
 CAN 2 HIGH

    Power Flow Diagram 4WD ECU Input&Output Diagram

    Removal 1. Prior to replacing the 4WD ECU, check the 4WD ECU's clutch learing with the diagnostic tool. (Refer to 4WD Control System - "Repair Procedures") 2.

    Other information:

    Hyundai Santa Fe (TM) 2019-2023 Service and Repair Manual: Blower Unit. Repair procedures

    Replacement 1. Disconnect the negative (-) battery terminal. 2. Recover the refrigerant with a recovery/recycling/charging station. 3. When the engine is cool, drain the engine coolant from the radiator.

    Hyundai Santa Fe (TM) 2019-2023 Service and Repair Manual: Blower Resistor (Manual). Repair procedures

    Inspection 1. Measure the resistance between the terminals. 2. The measured resistance is not within specification, the blower resistor must be replaced. (After removing the resistor) Replacement 1.

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