Nissan Sentra manuals

Nissan Sentra Service Manual: U1001 can comm circuit

Description

CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle multiplex communication line with high data communication speed and excellent error detection ability. Many electronic control units are equipped onto a 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 Logic

DTC DETECTION LOGIC

DTC No. CONSULT screen terms (Trouble diagnosis content) DTC detecting condition Possible cause
U1001 CAN COMM CIRCUIT (CAN communication circuit) When ECM is not transmitting or receiving CAN communication signal other than OBD (emission related diagnosis) for 2 seconds or more. Harness or connectors (CAN communication line is open or shorted)

DTC CONFIRMATION PROCEDURE

1.PERFORM DTC CONFIRMATION PROCEDURE

  1. Turn ignition switch ON and wait at least 3 seconds.
  2. Check 1st trip DTC.

Is 1st trip DTC detected? YES >> Proceed to EC-169, "Diagnosis Procedure".

NO >> INSPECTION END

Diagnosis Procedure

Perform the trouble diagnosis for CAN communication system. Refer to LAN-16, "Trouble Diagnosis Flow Chart".

U0101 can comm circuit
Description CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle multiplex communication line with high data communication speed and excellen ...

P0011  IVT  control
DTC Logic DTC DETECTION LOGIC NOTE: If DTC P0011 is displayed with DTC P0075, first perform the trouble diagnosis for EC-180, "DTC Logic". DTC No. CONSULT screen terms (Tr ...

Other materials:

Manual air conditioning system
Air conditioning controls ■ Adjusting the temperature setting To adjust the temperature setting, turn clockwise to increase the temperature and counterclockwise to decrease the temperature. If  is not pressed, the system will blow ambient temperature air or heated air. ■ Fan ...

Ecu diagnosis information
ECM Reference Value VALUES ON THE DIAGNOSIS TOOL NOTE: The following table includes information (items) inapplicable to this vehicle. For information (items) applicable to this vehicle, refer to CONSULT display items. Numerical values in the following table are reference values. Thes ...

Interior room lamp control circuit
Description Controls each interior room lamp (ground side) by pwm signal. Note: Pwm signal control period is approximately 250 hz (in the gradual brightening/dimming). Component function check Caution: Before performing the diagnosis, check that the following are normal. Interior room l ...

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