Hyundai Tucson: 4WD Control System / 4WD ECU Schematic Diagrams

Circuit Diagram
4WD ECU Connector

Pin
Function
1
CAN communication line (Low)
2
CAN communication line (High)
3
-
4
Pressure sensor signal(+)
5
-
6
Lock mode switch
7
Oil pressure motor B
8
Oil pressure motor A
9
-
10
-
11
Pressure sensor(Input)
12
Input sensor signal(-)
13
Battery power 
14
Ground
15
IG power
16
-
17
-
18
-

4WD ECU Circuit Diagram

4WD ECU Flow Diagram
Power Flow Diagram 4WD ECU Input&Output Diagram ...

4WD ECU Repair procedures
Replacement 1. Prior to replacing the 4WD ECU, check the 4WD ECU's clutch learing with the GDS tool. (Refer to 4WD Control System - "Adjustment") 2. Disconnect the battery negative cable fr ...

Other information:

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Hyundai Tucson (LM) 2010-2015 Owners Manual: 45,000 miles (72,000 km) or 36 months
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