Nissan Rogue (T33) 2021-Present Service Manual: U1cb0-86 Mac Comm Circuit

Nissan Rogue (T33) 2021-Present Service Manual / Cruise Control & Driver Assistance :: Driver Assistance System / Adas Control Unit :: Dtc/circuit Diagnosis / U1cb0-86 Mac Comm Circuit

DTC Description

DTC DETECTION LOGIC

DTC

CONSULT screen terms

(Trouble diagnosis content) 		DTC detection condition
U1CB0 86

MAC communication error

(MAC communication error) 		Diagnosis condition When engine is running
Signal (terminal) MAC communication signal
Threshold If ADAS control unit 2 is not receiving MAC communication signal
Diagnosis delay time 2 seconds or more

POSSIBLE CAUSE

ADAS control unit 2

FAIL-SAFE

The following systems are canceled.

  • Steering wheel assistance function

CONFIRMATION PROCEDURE

PERFORM DTC CONFIRMATION PROCEDURE

  1. Start the engine, and then wait for 2 seconds or more.

  2. Perform “All DTC Reading” with CONSULT.

  3. Check if the “U1CB0-86” is detected as the current malfunction in “Self Diagnostic Result” of “ICC/ADAS 2”.

Is “U1CB0-86” detected as the current malfunction?

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

CHECK DTC PRIORITY

If DTC “U1CB0-86” is displayed with Network-DTC, first diagnose the Network-DTC.

Is applicable DTC detected?

YES>>

Perform diagnosis of applicable. Refer to DTC Index.

NO>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

Perform confirmation procedure again. Refer to DTC Description.

Is “U1CB0-86” detected as the current malfunction?

YES>>

Replace the ADAS control unit 2. Refer to Removal and Installation.

NO>>

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

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