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 Load Signal

Component Function Check

Component Function Check

  1. CHECK REAR WINDOW DEFOGGER SWITCH FUNCTION

    With CONSULT

    1. Turn ignition switch ON.

    2. Select “DATA MONITOR” of “ENGINE” with CONSULT.

    3. Select “LOAD SIGNAL” and check indication under the following conditions.

      Monitor item

      Condition

      Indication

      LOAD SIGNAL

      Rear window defogger switch

      ON

      ON

      OFF

      OFF

    Is the inspection result normal?

    YES >>

    GO TO 2.

    NO >>

    Refer to Diagnosis Procedure.

  2. CHECK LIGHTING SWITCH FUNCTION

    With CONSULT

    Check “LOAD SIGNAL” indication under the following conditions.

    Monitor item

    Condition

    Indication

    LOAD SIGNAL

    Lighting switch

    ON at 2nd position

    ON

    OFF

    OFF

    Is the inspection result normal?

    YES >>

    GO TO 3.

    NO >>

    Refer to Diagnosis Procedure.

  3. CHECK HEATER FAN CONTROL SWITCH FUNCTION

    With CONSULT

    Select “HEATER FAN SW” and check indication under the following conditions.

    Monitor item

    Condition

    Indication

    HEATER FAN SW

    Heater fan control switch

    ON

    ON

    OFF

    OFF

    Is the inspection result normal?

    YES >>

    INSPECTION END

    NO >>

    Refer to Diagnosis Procedure.

Diagnosis Procedure

Diagnosis Procedure

The electrical load signal (Headlamp switch signal, rear window defogger switch signal, etc.) is transferred from BCM via the CAN communication through IPDM E/R to ECM.

  1. INSPECTION START

    Confirm the malfunctioning circuit (rear window defogger, headlamp or heater fan). Refer to Component Function Check.

    Which circuit is related to the incident?

    Rear window defogger>>

    GO TO 2.

    Headlamp>>

    GO TO 3.

    Heater fan>>

    GO TO 4.

  2. CHECK REAR WINDOW DEFOGGER SYSTEM

    Check rear window defogger system. Refer to Work Flow.

    >>

    INSPECTION END

  3. CHECK HEADLAMP SYSTEM

    Check headlamp system. Refer to Work Flow(Halogen headlamp), Work Flow(Led headlamp).

    >>

    INSPECTION END

  4. CHECK HEATER FAN CONTROL SYSTEM

    Check heater fan control system. Refer to Work Flow.

    >>

    INSPECTION END

    Egr Volume Control Valve
    Component Inspection Component Inspection CHECK EGR VOLUME CONTROL VALVE-1 With CONSULT Turn ignition switch ON (engine stopped). Perform “EGR CONTROL VALVE” in “ACTIVE TE...
    Engine Coolant Temperature Sensor
    Component Inspection Component Inspection CHECK ENGINE COOLANT TEMPERATURE SENSOR Turn ignition switch OFF. Disconnect engine coolant temperature sensor harness connector. Remov...

    Other materials:

    Reverse Idler Shaft and Gear
    Exploded View Exploded View 1. Reverse output gear 2. Snap ring 3. R ...

    Road Wheels & Tires. Basic Inspection
    Diagnosis and Repair Work Flow. Work Flow Work Flow Work Flow OVERALL SEQUENCE 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 s ...

    Chime Does Not Sound
    Diagnosis Procedure Diagnosis Procedure The warning chime may not sound in some cases when there is a short distance between vehicles. Some examples are: When the Nissan Sentra vehicles are traveling at the same speed and the distance between vehicles is not changing. ...