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

  1. Perform the reproduction test as per the following procedure for each unit.
  2. Turn the ignition switch off.
  3. Disconnect the battery cable from the negative terminal.
  4. 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 2)
Dtc/circuit diagnosis ...

Other materials:

P1715 Input speed sensor
Description ECM receives input speed sensor signal from TCM through CAN communication line. ECM uses this signal for engine control. DTC Logic DTC DETECTION LOGIC NOTE: If DTC P1715 is displayed with DTC UXXXX, first perform the trouble diagnosis for DTC UXXXX. If DTC P1715 is displa ...

Rear door
Door assembly Door assembly : removal and installation Caution: Use two people when removing or installing the rear door assembly due to its heavy weight. When removing and installing rear door assembly, support rear door with a suitable tool. Removal Remove rear door assembly h ...

Power supply and ground circuit
A/C AUTO AMP A/C AUTO AMP. : Diagnosis Procedure Regarding Wiring Diagram information, refer to HAC-41, "Wiring Diagram". 1.CHECK FUSE Check fuses [No. 5, 8 and 21, located in the fuse block (J/B)]. NOTE: Refer to PG-47, "Terminal Arrangement". Is the inspection result nor ...

© 2014-2020 Copyright www.nisentra.com