Nissan Rogue (T33) 2021-Present Service Manual: U0101 Can Comm Circuit
DTC Description
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 | ||
| U0101 | 00 |
LOST COMM (TCM) (Lost Communication with TCM) |
Diagnosis condition | Ignition switch ON |
| Signal (terminal) | CAN communication signal | |||
| Threshold | ECM is not receiving CAN communication signal of OBD (emission-related diagnosis) with TCM | |||
| Diagnosis delay time | 2 seconds or more | |||
POSSIBLE CAUSE
Harness or connectors (CAN communication line is open or shorted)
FAIL-SAFE
Engine Control System
Not applicable
Stop/Start System
When a DTC is detected, the stop/start indicator lamp blinks slowly and the stop/start system operation is prohibited.
When ECM detects error while operating the stop/start system, ECM restarts the engine.
DTC Confirmation Procedure
PERFORM DTC CONFIRMATION PROCEDURE
-
Turn ignition switch ON and wait at least 3 seconds.
-
Check DTC.
Is DTC detected?
YES>>Proceed 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
Perform the trouble diagnosis for CAN communication system. Refer to Trouble Diagnosis Flow Chart.
Other materials:
Flasher
CONSULT Function (BCM - FLASHER)
DATA MONITORNOTE:
The following table includes information (items)
inapplicable to this Nissan Ariya vehicle. For information (items)
applicable to this vehicle, refer to CONSULT display items.
Monitor item
[Unit] Description
Hazard switch
[Off/On]
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Additional Service When Replacing Distance Sensor
Work Procedure
Always perform the distance sensor configuration after replacing the distance sensor.
Always perform the radar alignment after removing and installing or replacing the distance sensor.
CAUTION:
The system does not operate normally unless the distance
sensor configuration ...
Precaution. Tow Truck Towing
Tow Truck Towing
WARNING:
Never ride in a vehicle that is being towed.
Never get under your Nissan Ariya vehicle after it has been lifted by a tow truck.
CAUTION:
All applicable state or Provincial (in Canada) laws and local laws regarding the towing operation must be obeyed.
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