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: Mode Door Motor

Diagnosis Procedure

Diagnosis Procedure

  1. CHECK MODE DOOR MOTOR POWER SUPPLY

      1. Ignition switch ON.

      2. Check voltage between mode door motor harness connector and ground.

        +

        –

        Voltage

        (Approx.)

        Mode door motor

        Connector

        Terminal

        M166

        1

        Ground

        Battery voltage

    Is the inspection result normal?

    YES >>

    GO TO 2.

    NO >>

    GO TO 5.

  2. CHECK MODE DOOR MOTOR GROUND CIRCUIT

      1. Ignition switch OFF.

      2. Disconnect mode door motor connector and A/C amp. connector.

      3. Check continuity between mode door motor harness connector and ground.

        Mode door motor

        —

        Continuity

        Connector

        Terminal

        M166

        2

        Ground

        Yes

    Is the inspection result normal?

    YES >>

    GO TO 3.

    NO >>

    Repair harness or connector.

  3. CHECK MODE DOOR MOTOR LIN SIGNAL

      1. Connect mode door motor connector and A/C amp. connector.

      2. Ignition switch ON.

      3. Confirm output waveform between mode door motor harness connector and ground using oscilloscope.

        +

        —

        Output waveform

        Mode door motor

        Connector

        Terminal

        M166

        3

        Ground

    Is the inspection result normal?

    YES >>

    GO TO 4.

    NO >>

    GO TO 6.

  4. CHECK INSTALLATION OF MODE DOOR MOTOR

    1. Check mode door motor is properly installed. Refer to Exploded View.

    Is the inspection result normal?

    YES >>

    Replace mode door motor. Refer to Removal and Installation.

    NO >>

    Repair or replace malfunctioning part.

  5. CHECK MODE DOOR MOTOR POWER SUPPLY CIRCUIT FOR OPEN

      1. Ignition switch OFF.

      2. Disconnect mode door motor connector and A/C amp. connector.

      3. Check continuity between mode door motor harness connector and A/C amp. connector.

        Mode door motor

        A/C amp.

        Continuity

        Connector

        Terminal

        Connector

        Terminal

        M166

        1

        M81

        1

        Yes

    Is the inspection result normal?

    YES >>

    Replace A/C amp. Refer to Removal and Installation.

    NO >>

    Repair harness or connector.

  6. CHECK MODE DOOR MOTOR LIN SIGNAL CIRCUIT FOR OPEN

      1. Ignition switch OFF.

      2. Disconnect mode door motor connector and A/C amp. connector.

      3. Check continuity between mode door motor harness connector and A/C amp. harness connector.

        Mode door motor

        A/C amp.

        Continuity

        Connector

        Terminal

        Connector

        Terminal

        M166

        3

        M81

        22

        Yes

    Is the inspection result normal?

    YES >>

    Replace A/C amp. Refer to Removal and Installation.

    NO >>

    Repair harness or connector.

    Door Motor Circuit
    Diagnosis Procedure Diagnosis Procedure Note: If all of door motor DTCs are detected, check this circuit. CHECK DOOR MOTOR POWER SUPPLY Ignition switch ON. Check voltage between...
    A/c Switch Assembly Signal Circuit
    Diagnosis Procedure Diagnosis Procedure CHECK WITH SELF DIAGNOSTIC RESULT FUNCTION CONSULT Select “Self Diagnostic Result” mode of “HVAC”. Check DTC. Note: If DTC is dis...

    Other materials:

    P2808-00 Pressure Control Solenoid G
    Dtc Description DTC Description DTC DETECTION LOGIC DTC CONSULT screen terms (Trouble diagnosis content) DTC detection conditi ...

    Front Fender
    Exploded View Exploded View 1. Cowl top side trim cover 2. Front fender baffle A 3. ...

    B1019 Occupant Sens
    Dtc Description DTC Description DESCRIPTION B1019 OCCUPANT SENS The OCS control unit is wired to the air bag diagnosis sensor unit. The air bag diagnosis sensor unit will monitor the OCS for failures and interruptions in communication between the OCS control unit and the air bag ...