Nissan Sentra manuals

Nissan Sentra Service Manual: Can communication circuit

Diagnosis procedure

1.Connector inspection

  1. Turn the ignition switch OFF.
  2. Disconnect the battery cable from the negative terminal.
  3. Disconnect all the unit connectors on can communication system.
  4. Check terminals and connectors for damage, bend and loose connection.

Is the inspection result normal? Yes >> go to 2.

No >> repair the terminal and connector.

2.Check harness continuity (short circuit)

Check the continuity between the data link connector terminals.

Is the inspection result normal?


Is the inspection result normal? Yes >> go to 3.

No >> check the harness and repair the root cause.

3.Check harness continuity (short circuit)

Check the continuity between the data link connector and the ground.

Is the inspection result normal?


Is the inspection result normal? YES >> GO TO 4.

NO >> Check the harness and repair the root cause.

4.Check ecm and bcm termination circuit

  1. Remove the ecm and the bcm.
  2. Check the resistance between the ecm terminals.


  1. Check the resistance between the bcm terminals.

Is the measurement value within the specification?


Is the measurement value within the specification? YES >> GO TO 5.

NO >> Replace the ECM and/or the BCM.

5.Check symptom

Connect all the connectors. Check if the symptoms described in the “symptom (results from interview with customer)” are reproduced.

Inspection result

Reproduced>>go to 6.

Non-reproduced>>start the diagnosis again. Follow the trouble diagnosis procedure when past error is detected.

6.Check unit reproduction

Perform the reproduction test as per the following procedure for each unit.

  1. Turn the ignition switch off.
  2. Disconnect the battery cable from the negative terminal.
  3. Disconnect one of the unit connectors of can communication system.

Note:

Ecm and bcm have a termination circuit. Check other units first.

  1. Connect the battery cable to the negative terminal. Check if the symptoms described in the “symptom (results from interview with customer)” are reproduced.

Note:

Although unit-related error symptoms occur, do not confuse them with other symptoms.

Inspection result

Reproduced>>connect the connector. Check other units as per the above procedure.

Non-reproduced>>replace the unit whose connector was disconnected.

BCM branch line circuit
Diagnosis procedure 1.Check connector Turn the ignition switch off. Disconnect the battery cable from the negative terminal. Check the terminals and connectors of the bcm for damage, bend and ...

Can system (type 5)
Dtc/circuit diagnosis ...

Other materials:

Replacing
Replace the wiper blades if they are worn. To replace the windshield wiper blades, follow the procedure below: When ignition switch is ON or within 60 seconds after placing the ignition switch from ON to OFF position. Quickly push the windshield wiper and washer lever to the mist pos ...

Compass display (if so equipped)
This unit measures terrestrial magnetism and indicates heading direction of vehicle. With the ignition switch in the ON position, press the button as described in the chart below to activate various features of the automatic antiglare rearview mirror. For more information about the au ...

Heated steering wheel/seat heaters/seat ventilators
Heated steering wheel and seat heaters heat the side grips of the steering wheel and seats, respectively. Seat ventilators maintain good ventilation by pulling air through the seat upholstery. WARNING ■To prevent minor burn injuries Care should be taken to prevent injury if anyone in the foll ...

© 2014-2024 Copyright www.nisentra.com