Nissan Rogue (T33) 2021-Present Service Manual: U2140-87 Can Comm Err (ecm)

Nissan Rogue (T33) 2021-Present Service Manual / Ventilation, Heater & Air Conditioner :: Heater & Air Conditioning Control System / Automatic Air Conditioning :: Dtc/circuit Diagnosis / U2140-87 Can Comm Err (ecm)

DTC Description

DESCRIPTION

CAN (Controller Area Network) is a serial communication line for real time applications. It is an on-Nissan Ariya vehicle multiplex communication line with high data communication speed and excellent error detection ability. Modern Nissan Ariya vehicle is equipped with many electronic control unit, and each control unit shares information and links with other control units during operation (not independent). In CAN communication, control units are connected with 2 communication lines (CAN-High line, CAN-Low line) allowing a high rate of information transmission with less wiring. Each control unit transmits/receives data but selectively reads required data only. CAN Communication Signal Chart. Refer to CAN Communication Signal Chart.

DTC DETECTION LOGIC

DTC No.

CONSULT screen items

(Trouble diagnosis content) 		DTC Detection Condition
U2140–87

CAN comm err (ECM)

[CAN communication error (ECM)] 		Diagnosis condition Ignition switch ON
Signal (terminal) CAN communication signal
Threshold A/C amp. is not transmitting or receiving CAN communication signal
Diagnosis delay time 2 seconds or more

POSSIBLE CAUSE

CAN communication system

FAIL-SAFE

—

DTC CONFIRMATION PROCEDURE

PERFORM SELF-DIAGNOSIS

CONSULT

  1. Ignition switch ON.

  2. Select “Self diagnosis result” mode of “HVAC”.

  3. Check DTC.

Is DTC detected?

YES>>

Refer to 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 CAN COMMUNICATION SYSTEM

Check CAN communication system. Refer to Trouble Diagnosis Flow Chart.

>>

Inspection End.

    U1caa-02 Mode Door Motor
    DTC Description DTC DETECTION LOGIC DTC No. CONSULT screen terms (Trouble diagnosis content) DTC detection condition U1CAA-02 Mode door motor (Mode door motor) Diagnosis conditi...
    Power Supply and Ground Circuit
    A/c Amp. Diagnosis Procedure CHECK A/C AMP. GROUND CIRCUIT FOR OPEN Ignition switch OFF. Disconnect A/C amp. connector. Check continuity between A/C amp. harness connector and g...

    Other materials:

    System Description. Component Parts. Drive Mode System
    Drive Mode System Component Parts Location No. Component Function 1. Drive mode select switch Refer to Drive Mode Select Switch. 2. Chassis control module Chassis control module controls the drive mode select system. Refer to Component Parts Location (without ProPILOT Assi ...

    Fonctionnement du système
    Capteurs sonar centraux Capteurs sonar d’angle Capteurs sonar latéraux (si le véhicule en est équipé) Le système informe le conducteur par des alertes visuelles et sonores de la présence : D’obstacles situés à l’avant lorsque le levier de vitesses est en position D (c ...

    System Description. System (back Door Opener System)
    System Description SYSTEM DIAGRAM Component Function Back door opener switch Refer to Back Door Opener Switch. Back door opener actuator Refer to Back Door Lock Assembly. ABS actuator and electric unit (control unit) Transmit Nissan Ariya vehicle speed signal to BCM via CAN c ...