Nissan Versa (N17): U1000 Can comm circuit

Nissan Versa 2nd generation (N17) Service Manual / Transmission & driveline / Transaxle & transmission (TM) / U1000 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 malfunction 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 independently). 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 Trouble diagnosis name DTC detection condition Possible causes
U1000 CAN Communication Line TCM is not transmitting CAN communication signal for 2 seconds or more.
  • Harness or connectors (CAN communication line is open or shorted.)
  • TCM

1.PRECONDITIONING

If "DTC CONFIRMATION PROCEDURE" is previously conducted, always turn ignition switch OFF and wait at least 10 seconds before performing the next test.

>> GO TO 2.

2.CHECK DTC DETECTION

  1. Start the engine.
  2. Run engine for at least 5 consecutive seconds at idle speed.
  3. Check the DTC.

Is "U1000" detected?

YES >> Go to TM, "Diagnosis Procedure".

NO >> INSPECTION END

Diagnosis Procedure

For the diagnosis procedure, refer to LAN, "Trouble Diagnosis Flow Chart".

U0300 Can communication data

Description The amount of data transmitted from each control unit is read. DTC Logic DTC DETECTION LOGIC DTC Trouble diagnosis name DTC detection condition Possible causes ...

U1117 Lost communication (ABS)

DTC Logic DTC DETECTION LOGIC DTC Trouble diagnosis name DTC detection condition Possible causes U1117 Lost Communication With ABS When the ignition switch is ON, ...

Other materials:

Child safety
WARNING Do not allow children to play with the seat belts. Most seating positions are equipped with Automatic Locking Retractor (ALR) mode seat belts. If the seat belt becomes wrapped around a child's neck with the ALR mode activated, the child can be seriously injured or killed if the seat ...

U0300 Can communication data
Description The amount of data transmitted from each control unit is read. DTC Logic DTC DETECTION LOGIC DTC Trouble diagnosis name DTC detection condition Possible causes U0300 Internal Control Module Software Incompatibility When the amount of data transmitt ...

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