Hyundai Santa Fe: 4WD ECU. Repair procedures - 4WD Control System - 4 Wheel Drive (4WD) SystemHyundai Santa Fe: 4WD ECU. Repair procedures


Prior to replacing the 4WD ECU, check the 4WD ECU's clutch learing with the GDS tool.
Disconnect the battery negative cable from the battery
Disconnect the 4WD ECU connector (A).

Loosen the nust (A) and then remove the 4WD ECU.

Tightening torque:
9.8 ~11.8N.m (1.0~1.2kgf.m, 7.2~8.7lb-ft)


Install in the reverse order of removal.
Prior to installing a new ECU, upload the original ECU’s clutch learing to the replacement ECU using the GDS tool.

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 ...

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