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:

Periodic maintenance
In-cabin microfilter Exploded View Removal and Installation REMOVAL Remove the in-cabin microfilter cover. CAUTION: Before removing the in-cabin micofilter cover, let the vehicle rest for at least 30 minutes. Release the filter cover tab (A), then pull the bottom of the in-cabi ...

Door lock and unlock switch
Component function check 1.Check function Select door lock of bcm using consult. Select cdl lock sw, cdl unlock sw in data monitor mode. Check that the function operates normally according to the following conditions. Is the inspection result normal? YES >> Main power windo ...

Basic inspection
DIAGNOSIS AND REPAIR WORKFLOW Work Flow DETAILED FLOW 1.LISTEN TO CUSTOMER COMPLAINT Listen to customer complaint. Get detailed information about the conditions and environment when the symptom occurs. >> GO TO 2. 2.VERIFY THE SYMPTOM WITH OPERATIONAL CHECK Verify the symptom with ...

В© 2014-2025 Copyright www.nisentra.com