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 / Manual 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.

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:

    Automatic Brake Hold. Removal and Installation
    Chassis Control Module Removal and Installation Removal and installation procedure of chassis control module. Refer to Removal and Installation. Automatic Brake Hold Switch Removal and Installation Removal and installation procedure of parking brake switch. Refer to Removal and Installation.NOTE: ...

    Mass Air Flow Sensor
    Component Inspection CHECK MASS AIR FLOW (MAF) SENSOR-1 With CONSULT Turn ignition switch OFF. Reconnect all harness connectors disconnected. Start the engine and warm it up to normal operating temperature. Select “MASS AIR FLOW SENSOR (g/s) B1” in “DATE MONITOR” mode o ...

    Rear Propeller Shaft: Cvj-Cvj-C. Service Data and Specifications (sds). Service Data and Specifications (sds)
    Service Data and Specifications (sds) General Specifications Applied model Axle AWD Engine KR15DDT Transaxle CVT Propeller shaft model CVJ-CVJ-C Number of joints 3 Joint type 1st joint CVJ type 2nd joint CVJ type 3rd joint Universal (Shell type) ...