Nissan Sentra B18 (2020-2025) Service Manual: U0079 Control Module Comm Bus G Off

Nissan Sentra B18 (2020-2025) Service Manual / Driver Information & Multimedia / Audio, Visual & Navigation System :: Display Audio with 7" Color Display / Dtc/circuit Diagnosis / U0079 Control Module Comm Bus G Off

Dtc Description

DTC Description

DTC DETECTION LOGIC

DTC No.	CONSULT screen terms (Trouble diagnosis content)		DTC detection condition
U0079–00	Control module comm Bus G Off (Control module comm Bus G Off)	[—]	Diagnosis condition	When ignition switch is ON.
			Signal (terminal)	CAN communication signal
			Threshold	Transmit or receive is abnormal
			Diagnosis delay time	2 seconds or more

POSSIBLE CAUSE

CAN communication system

FAIL-SAFE

CAN communication does not function.

Confirmation Procedure

Confirmation Procedure

PERFORM DTC CONFIRMATION PROCEDURE
1. CONSULT
  1. Ignition switch ON.
  2. Ignition switch OFF and wait at least 30 seconds.
  3. Ignition switch ON and wait at least 30 seconds or more.
  4. Select “Self Diagnostic Result” mode of “MULTI AV”.
  5. Check DTC.
Is DTC U0079–00 detected?
YES>>
Proceed to DTC Diagnosis Procedure.
NO>>
To check malfunction symptom before repair: Refer to Intermittent Incident.
NO>>
Confirmation after repair: Inspection End.

Dtc Diagnosis Procedure

DTC Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE AGAIN
1. CONSULT
  1. Ignition switch ON.
  2. Erase DTC.
  3. Perform DTC confirmation procedure again. Refer to DTC Confirmation Procedure.
Is DTC U0079–00 detected again?
YES >>
Perform the trouble diagnosis for CAN communication system. Refer to Trouble Diagnosis Flow Chart.
NO >>
Inspection End.

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