Nissan Sentra manuals

Nissan Sentra Service Manual: Can communication circuit

Nissan Sentra Service Manual / Electrical & power control / Lan system / Can system (type 2) / 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 3)
Dtc/circuit diagnosis ...

Other materials:

P0196 EOT Sensor
DTC Logic DTC DETECTION LOGIC NOTE: If DTC P0196 is displayed with DTC P0197 or P0198, first perform the trouble diagnosis for DTC P0197 or P0198. Refer to EC-264, "DTC Logic". DTC No. CONSULT screen terms (Trouble diagnosis content) DTC detecting condition Possib ...

Both side headlamps do not switch to high beam
Description The headlamps (both sides) do not switch to high beam when the lighting switch is in the hi or pass setting. Diagnosis procedure 1.Combination switch (lighting and turn signal switch) inspection Check the combination switch (lighting and turn signal switch). Refer to bcs-72, &q ...

1110, C1170 ABS Actuator and electric unit (control unit)
DTC Logic DTC DETECTION LOGIC DTC Display item Malfunction detected condition Possible cause C1110 CONTROLLER FAILURE When there is an internal malfunction in the ABS actuator and electric unit (control unit). ABS actuator and electric unit (contr ...

© 2014-2025 Copyright www.nisentra.com