Nissan Sentra manuals

Nissan Sentra Service Manual: Ecm branch line circuit

Diagnosis Procedure

1.Check connector

  1. Turn the ignition switch off.
  2. Disconnect the battery cable from the negative terminal.
  3. Check the terminals and connectors of the ECM for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal? YES >> GO TO 2.

NO >> Repair the terminal and connector.

2.Check harness for open circuit

  1. Disconnect the connector of ECM.
  2. Check the resistance between the ecm harness connector terminals.

Is the measurement value within the specification?


Is the measurement value within the specification? Yes >> go to 3.

No >> repair the ecm branch line.

3.Check power supply and ground circuit

Check the power supply and the ground circuit of the ecm. Refer to ec-164, "diagnosis procedure".

Is the inspection result normal? Yes (present error)>>replace the ecm. Refer to ec-485, "removal and installation".

Yes (past error)>>error was detected in the ecm branch line.

No >> repair the power supply and the ground circuit.

Main line between dlc and hvac circuit
Diagnosis Procedure 1.Check harness continuity (open circuit) Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Disconnect the following harness connector ...

Abs 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 ABS actuator and electri ...

Other materials:

Precautions when starting and driving
WARNING Do not leave children or adults who would normally require the assistance of others alone in your vehicle. Pets should also not be left alone. They could accidentally injure themselves or others through inadvertent operation of the vehicle. Also, on hot, su ...

Manual transmission (if so equipped)
WARNING Do not downshift abruptly on slippery roads. This may cause a loss of control. Do not over-rev the engine when shifting to a lower gear. This may cause a loss of control or engine damage. Do not shift to the N (Neutral) position while driving. Doing so may ...

Abs 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 abs actuator and electric unit (control unit) for damage, bend and loose connection (unit side and connector side). ...

В© 2014-2024 Copyright www.nisentra.com