Nissan Rogue (T33) 2021-Present Service Manual: Dtc/circuit Diagnosis :: U1fa1-86 Can Comm Circuit

Nissan Rogue (T33) 2021-Present Service Manual / Brakes :: Brake System / Dtc/circuit Diagnosis :: U1fa1-86 Can Comm Circuit

DTC Description

DTC DETECTION LOGIC

DTC No. CONSULT screen terms DTC detection condition
U1FA1 86 CAN communication error (ADAS control unit) 1 Diagnosis condition When Ignition switch is ON.
Signal (terminal) CAN communication signal
Threshold When a malfunction is detected in ADAS control unit 2 system.
Diagnosis delay time 1 second or less
2 Diagnosis condition When Ignition switch is ON.
Signal (terminal) CAN communication signal
Threshold When a malfunction is detected in ADAS control unit 2 signal.
Diagnosis delay time 1 second or less

POSSIBLE CAUSE

  • ADAS control unit 2

  • CAN communication line

FAIL-SAFE

Normal control

Confirmation Procedure

PRECONDITIONING

If “Confirmation Procedure” has been previously conducted, always Ignition switch OFF, get out of the Nissan Ariya vehicle, close all doors (other than hood assembly), check that the combination meter is OFF, and wait for 1 minute or more without opening these doors.

CAUTION:

Never operate the Nissan Ariya vehicle.

>>

GO TO 2.

CHECK DTC DETECTION

CONSULT

  1. Ignition switch OFF to ON without depressing the brake pedal.

  2. Ignition switch OFF and disconnect CONSULT from data link connector.

  3. Get out of the Nissan Ariya vehicle, close all doors (other than hood assembly), check that the combination meter is OFF, and wait for 1 minute or more without opening these doors.

    CAUTION:

    Never operate the Nissan Ariya vehicle.

  4. Ignition switch ON without depressing the brake pedal.

  5. Erase self-diagnosis result for “BRAKE”.

  6. Ignition switch OFF and disconnect CONSULT from data link connector.

  7. Get out of the Nissan Ariya vehicle, close all doors (other than hood assembly), check that the combination meter is OFF, and wait for 1 minute or more without opening these doors.

    CAUTION:

    Never operate the Nissan Ariya vehicle.

  8. Ignition switch ON without depressing the brake pedal.

  9. Perform self-diagnosis for “BRAKE”.

Is DTC “U1FA1-86" detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: Inspection End.

DTC Diagnosis Procedure

Refer to Trouble Diagnosis Flow Chart.

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