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Nissan Armada 2025-2026 Service and Repair Manual: Additional Service When Replacing Transfer Control Unit

Nissan Armada 2025-2026 Service and Repair Manual / Transmission & Driveline / Driveline. Transfer: Atx93a / Additional Service When Replacing Transfer Control Unit

Description

When replacing transfer control unit, the following work is required. For the work procedure, refer to Work Procedure.

WORK AFTER REPLACEMENT

  • Unit parameter writing

  • Initial calibration

Work Procedure

WRITING THE REQUIRED INFORMATION FOR CONTROL UNIT REPLACEMENT

With CONSULT

  1. Ignition switch ON.

  2. Select "AWD/4WD".

  3. Select "Replace ECU".

  4. Perform the work according to the procedure displayed in CONSULT.

    CAUTION:

    The following conditions must be maintained during ECU modernization procedure.

    • Ignition switch ON.

    • All electric loads are OFF

    • Brake pedal is not depressed.

    • Battery voltage: 12-13.5 V (Be sure to check the value of battery voltage by CONSULT.)

    NOTE:

    Writing of control unit information is performed automatically.

>>

GO TO 2.

WRITING UNIT PARAMETER

Perform writing of the unit parameter to transfer control unit. Refer to Work Procedure.

>>

GO TO 3.

INITIAL CALIBRATION

  1. Continue the following condition.

    Transmission position : P

    4WD mode : AUTO

  2. Depress the brake pedal.

  3. Start the engine and wait for approximately 10 seconds under the brake pedal depressed.

>>

GO TO 4.

PERFORM SELF-DIAGNOSIS

With CONSULT

  1. Erase self-diagnostic results for “AWD/4WD”.

  2. Ignition switch ON to OFF.

    CAUTION:

    Wait for 60 seconds after ignition switch OFF.

  3. Depress the brake pedal.

  4. Start the engine.

    CAUTION:

    Never drive the vehicle.

  5. Perform self-diagnosis for “AWD/4WD”.

Is any DTCs detected?

YES>>

Check DTC detected item. Refer to DTC Index.

NO>>

WORK END

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