Nissan Sentra B18 (2020-2025) Service Manual / Driver Information & Multimedia / Sonar System :: Dtc/circuit Diagnosis / U1000 Can Comm Circuit

Nissan Sentra B18 (2020-2025) Service Manual: U1000 Can Comm Circuit

Dtc Description

DTC Description

DESCRIPTION

CAN (Controller Area Network) is a serial communication line for real-time application. It is an on-Nissan Sentra vehicle multiplex communication line with high data communication speed and excellent error detection ability. Many electronic control units are equipped onto a Nissan Sentra vehicle, and each control unit shares information and links with other control units during operation (not independently). In CAN communication, control units are connected with 2 communication lines (CAN-High, CAN-Low) 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 terms (Trouble diagnosis content)	DTC detection condition
U1000–00	CAN COMM CIRCUIT (CAN COMM CIRCUIT)	Diagnosis condition	When ignition switch is ON.
		Signal (terminal)	—
		Threshold	—
		Diagnosis delay time	—

POSSIBLE CAUSE

CAN communication system

FAIL-SAFE

Obstacle detection is disabled

Dtc Confirmation Procedure

DTC Confirmation Procedure

PERFORM DTC CONFIRMATION PROCEDURE
1. CONSULT
  1. Ignition switch ON.
  2. Ignition switch OFF and wait at least 30 seconds.
  3. Ignition switch ON and wait at least 2 seconds or more.
  4. Select “Self Diagnostic Result” mode of “SONAR”.
Is DTC U1000–00 detected?
YES >>
Refer to DTC Diagnosis Procedure.
NO >>
To check malfunction symptom before repair: Refer to Intermittent Incident.
NO >>
Confirmation after repair: Inspection End.

Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE AGAIN
1. CONSULT
  1. Ignition switch ON.
  2. Erase DTC.
  3. Perform DTC confirmation procedure again. Refer to DTC Confirmation Procedure.
Is DTC U1000–00 detected?
YES >>
Perform the trouble diagnosis for CAN communication system. Refer to Trouble Diagnosis Flow Chart.
NO >>
Inspection End.

 U0075 Control Module Comm Bus C Off

Dtc Description DTC Description DTC DETECTION LOGIC DTC No. CONSULT screen terms (Trouble diagnosis content) DTC detection condition U0075–00 Control module comm Bus C Off (Co...

 U1010 Control Unit(can)

Dtc Description DTC Description DESCRIPTION CAN (Controller Area Network) is a serial communication line for real-time application. It is an on-Nissan Sentra vehicle multiplex c...

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