Nissan Rogue (T33) 2021-Present Service Manual: U0073-00 Control Module Comm Bus a Off

Nissan Rogue (T33) 2021-Present Service Manual / Electrical & Power Control :: Power Control System / Ipdm E/r :: Dtc/circuit Diagnosis / U0073-00 Control Module Comm Bus a Off

DTC 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.

DTC DETECTION LOGIC

DTC No.

CONSULT screen items

(Trouble diagnosis content) 		DTC detection condition
U0073-00

Control module comm Bus A Off

(Control module communication bus A Off) 		[NO SUBTYPE INFO] Diagnosis condition When ignition switch is ON
Signal (terminal) CAN communication signal
Threshold When IPDM E/R cannot communicate CAN communication signal
Diagnosis delay time 2 seconds or more

POSSIBLE CAUSE

CAN communication system

FAIL-SAFE

When CAN communication with ECM and BCM is impossible, IPDM E/R performs fail-safe control. After CAN communication recovers normally, it also returns to normal control.

DTC CONFIRMATION PROCEDURE

PERFORM DTC CONFIRMATION PROCEDURE

CONSULT

  1. Ignition switch ON and wait for 2 seconds or more.

  2. Select “Self diagnosis result” mode of “IPDM E/R”.

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

CHECK CAN COMMUNICATION SYSTEM

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

>>

Inspection End.

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