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:

Steering wheel
Inspection CONDITION OF INSTALLATION Check installation condition of power steering gear assembly, front suspension, front drive shaft and steering column. Check if movement exists when steering wheel is moved up and down, to the left and right and to the axial direction. S ...

DTC/circuit diagnosis
POWER SUPPLY AND GROUND CIRCUIT A/C AUTO AMP. A/C AUTO AMP. : Diagnosis Procedure Regarding Wiring Diagram information, refer to HAC-145, "Wiring Diagram" or HAC-152, "Wiring Diagram". 1.CHECK FUSE Check fuses [No. 5, 8 and 21, located in the fuse block (J/B)]. NOTE: Ref ...

Glove box lamp
Removal and installation Warning: Do not touch bulb while it is lit or right after being turned off. Burning may result. Caution: Do not touch glass surface of the bulb with bare hands or allow oil or grease to get on it to prevent damage to bulb. Removal Remove the glove box assembly ...

© 2014-2020 Copyright www.nisentra.com