S Nissan Sentra Manuals Library
Factory-style information for owners and repair work

Nissan Sentra techinfo

Find Nissan Sentra owner information, maintenance instructions, technical references, service procedures and useful repair pages in one clean online library.

Quick access Sentra Docs
B18 Owner's 2020-2025 Sentra owner information B18 Service 2020-2025 Sentra Workshop manual B17 Owner's 2013-2019 Sentra owner documentation B17 Service 2013-2019 Sentra service information
Nissan Sentra B18 (2020-2025) Service Manual / Electrical & Power Control / Lan System :: Can / Dtc/circuit Diagnosis / Ecm Branch Line Circuit (vehicle Can Communication 1 Circuit)

Nissan Sentra B18 (2020-2025) Service Manual: Ecm Branch Line Circuit (vehicle Can Communication 1 Circuit)

Diagnosis Procedure

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.

      ECM harness connector

      Resistance (Ω)

      Connector No.

      Terminal No.

      E16

      134

      133

      Approx. 108 – 132

    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 Diagnosis Procedure.

    Is the inspection result normal?

    YES (Present error) >>

    Replace the ECM. Refer to 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 Icc 2 and Rdr-L Circuit
    Diagnosis Procedure Diagnosis Procedure CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the following terminals and ...
    Abs Branch Line Circuit (vehicle Can Communication 1 Circuit)
    Diagnosis Procedure Diagnosis Procedure CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the terminals and connectors...

    Other materials:

    C1713-7b Low Tire Pressure Rl
    Dtc Description DTC Description Note: The Signal Tech II Tool [– (NI-50190)] can be used to perform the following functions: Refer to the Signal Tech II User Guide for additional information. Activate and display TPMS sensor IDs Display tire pressure rep ...

    P271e-00 Wheel Torque Calculation Signal
    Dtc Description DTC Description DTC DETECTION LOGIC DTC CONSULT screen terms (Trouble diagnosis content) DTC detection ...

    Intelligent Around View Monitor system operation
    With the ignition switch in the ON position, move the shift lever to the R (Reverse) position or press the CAMERA button to activate the Intelligent Around View Monitor system on the Nissan Sentra. This system is designed to support low-speed maneuvers and parking situations by providing multi ...