Nissan Murano: Dtc/circuit Diagnosis / U0079 Control Module Communication Bus G Off

Nissan Murano (Z52) 2015-2024 Service Manual / Driver Information & Multimedia / Audio, Visual & Navigation System :: Navigation Without Bose / Dtc/circuit Diagnosis / U0079 Control Module Communication Bus G Off

DTC Description

DTC DETECTION LOGIC

DTC No.

CONSULT screen terms

(Trouble diagnosis content)
DTC detection condition
U0079–00

Control module communication Bus G Off

(Control module communication 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

PERFORM DTC CONFIRMATION PROCEDURE

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>>

Refer to DTC Diagnosis Procedure.

NO>>

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

NO>>

Confirmation after repair: Inspection End.

DTC Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

CONSULT

  1. Ignition switch ON.

  2. Erase DTC.

  3. Perform DTC confirmation procedure again. Refer to DTC Confirmation Procedure.

Is DTC detected again?

YES>>

Perform the trouble diagnosis for CAN communication system. Refer to Trouble Diagnosis Flow Chart.

NO>>

Inspection End.

    B13ec Factory Mode

    DTC Description DTC DETECTION LOGIC DTC No. CONSULT screen terms (Trouble diagnosis content) DTC detection condition B13EC–52 Factory mode (AV control unit) [—] Diagnosis condition When ignition switch is ON...

    U1000 Can Comm Circuit

    DTC Description DESCRIPTIONCAN (Controller Area Network) is a serial communication line for real-time application. It is an on-Nissan Murano vehicle multiplex communication line with high data communication speed and excellent error detection ability...

    Other information:

    Nissan Murano (Z52) 2015-2024 Service Manual: P219a Air Fuel Ratio


    DTC Description DTC DETECTION LOGIC DTC CONSULT screen terms (Trouble diagnosis content) DTC detection condition P219A AIR FUEL RATIO IMBALANCE B1 (Air-fuel ratio imbalance bank 1) Diagnosis condition — Signal (terminal) — Threshold ECM detects a lean/rich air fuel ratio state in any cylinder for a specified length of time Diagnosis delay time — P219B AIR FUEL RATIO IMBALANCE B2 (Air-fuel ratio imbalance bank 2) Diagnosis condition — Signal (terminal) — Threshold ECM detects a lean/rich air fuel ratio state in any cylinder for a specified length of time Diagnosis delay time — POSSIBLE CAUSEDTC P219A Fuel injector Exhaust gas leaks Incorrect fuel pressure Mass air flow sensor Intake air leaks Lack of fuel Incorrect PCV hose connection Improper spark plug Insufficient compression The fuel injector circuit is open or shorted Ignition coil The ignition signal circuit is open or shorted DTC P219B Fuel injector Exhaust gas leaks Incorrect fuel pressure Mass air flow sensor Intake air leaks Lack of fuel Incorrect PCV hose connection Improper spark plug Insufficient compression The fuel injector circuit is open or shorted Ignition coil The ignition signal circuit is open or shorted FAIL-SAFENot applicable DTC Confirmation Procedure CHECK DTC PRIORITY If DTC P219A or P219B is displayed with other DTC, first perform the trouble diagnosis for the other DTC...

    Nissan Murano (Z52) 2015-2024 Service Manual: Performance Test


    Inspection INSPECTION PROCEDURE Connect recovery/recycling/recharging equipment (for HFO-1234yf) or manifold gauge. Start the engine, and set to the following conditions. Test condition Surrounding condition Indoors or in the shade (in a well-ventilated place) Nissan Murano Vehicle condition Door Closed Door glass Full open Hood Open Engine speed Idle speed A/C condition Temperature control switch or dial Full cold A/C switch ON Air outlet VENT (ventilation) Intake door position Recirculation Fan (blower) speed Maximum speed set Maintain test condition until A/C system becomes stable (approximately 10 minutes)...

    Categories

    read more

     
    Copyright © 2026 www.nimurano.com