Repair Procedures: Removal

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Prior to replacing the 4WD ECU, check the 4WD ECU's clutch learning with the GDS tool.
(Refer to "REPAIR PROCEDURES ")
Disconnect the battery negative cable from the battery
Disconnect the 4WD ECU connector (A) and then loosen the nut (B).

Fig 1: Locating 4WD ECU Connector And Nuts
Courtesy of KIA MOTORS AMERICA, INC.
Remove the 4WD ECU.