Nissan Rogue (T33) 2021-Present Service Manual: U0146 Can Communication

Nissan Rogue (T33) 2021-Present Service Manual / Engine :: Engine Control System / Kr15ddt :: Dtc/circuit Diagnosis / U0146 Can Communication

DTC Description

CAN (Controller Area Network) is a serial communication line for real time application. It is an on-Nissan Ariya vehicle multiplex communication line with high data communication speed and excellent error detection ability. Many electronic control units are equipped onto a Nissan Ariya vehicle, 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 H line, CAN L line) allowing a high rate of information transmission with less wiring. Each control unit transmits/receives data but selectively reads required data only.

DTC DETECTION LOGIC

DTC

CONSULT screen terms

(Trouble diagnosis content) 		DTC detection condition
U0146 00

LOST COMM (CGW)

(Lost communication with gateway "A" ) 		Diagnosis condition Ignition switch ON
Signal (terminal) CAN communication signal
Threshold When ECM is not receiving CAN communication signal of OBD (emission related diagnosis) with CGW
Diagnosis delay time 30 seconds or more

POSSIBLE CAUSE

CAN communication line between CGW and ECM (CAN communication line is open or shorted)

FAIL-SAFE

Not applicable

DTC Confirmation Procedure

PERFORM DTC CONFIRMATION PROCEDURE

  1. Ignition switch ON and wait at least 3 seconds.

  2. Check DTC.

Is DTC detected?

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

Proceed to Trouble Diagnosis Flow Chart.

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