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Home >> Nissan-Datsun >> 2017 >> Sentra Nismo, Automatic CVT Trans >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Drive Mode System (ECO Mode) (CVT) >> DTC/Circuit Diagnosis >> ECO Mode Switch >> Diagnosis Procedure
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Diagnosis Procedure

Regarding Wiring Diagram information, refer to WIRING DIAGRAM .

  1. DETECT MALFUNCTIONING ITEMS

    What is malfunction items?

    ECO mode switch illumination does not turns ON 

    GO TO STEP 2  .

    ECO mode indicator lamp does not turns ON 

    GO TO STEP   8  .

  2. CHECK ECO MODE SWITCH ILLUMINATION POWER SUPPLY (1)

    1. Turn OFF the headlamp.
    2. Turn ignition switch OFF.
    3. Disconnect ECO mode switch harness connector.
    4. Turn ignition switch ON.
    5. Turn ON the headlamp.
    6. Check the voltage between ECO mode switch harness connector terminals.
      ECO mode switch Voltage
      Connector + -
      Terminal
      M82 1 4 Battery voltage

    Is the inspection result normal?

    YES 

    GO TO STEP 3  .

    NO 

    GO TO STEP 4  .

  3. CHECK INTERMITTENT INCIDENT

    Refer to INTERMITTENT INCIDENT .

    Is the inspection result normal?

    YES 

    Replace ECO mode switch. Refer to REMOVAL AND INSTALLATION .

    NO 

    Replace the fuse after repair the applicable circuit.

  4. CHECK ECO MODE SWITCH ILLUMINATION POWER SUPPLY (2)

    Check the voltage between ECO mode switch harness connector and ground.

    + - Voltage
    ECO mode switch
    Connector Terminal
    M82 1 Ground Battery voltage

    Is the inspection result normal?

    YES 

    GO TO STEP 7  .

    NO 

    GO TO STEP 5  .

  5. CHECK FUSE

    1. Turn OFF the headlamp.
    2. Turn ignition switch OFF.
    3. Pull out No. 37 fuse. Refer to IPDM E/R TERMINAL ARRANGEMENT .
    4. Check that the fuse is not fusing.

    Is the inspection result normal?

    YES 

    GO TO STEP 6  .

    NO 

    Replace the fuse after repair the applicable circuit.

  6. CHECK ECO MODE SWITCH ILLUMINATION POWER SUPPLY CIRCUIT

    1. Disconnect IPDM E/R harness connector E45. Refer to WIRING DIAGRAM .
    2. Check the continuity between IPDM E/R harness connector and ECO mode switch harness connector.
      + - Continuity
      IPDM E/R ECO mode switch
      Connector Terminal Connector Terminal
      E45 33 M82 1 Existed
    3. Also check harness for short to ground.

    Is the inspection result normal?

    YES 

    Perform IPDM E/R auto active test and check tail lamp relay operation. Refer to DIAGNOSIS DESCRIPTION (with intelligent key), DIAGNOSIS DESCRIPTION (without intelligent key).

    NO 

    Repair or replace error-detected parts.

  7. CHECK GROUND CIRCUIT

    1. Turn OFF the headlamp.
    2. Turn ignition switch OFF.
    3. Check continuity between ECO mode switch harness connector terminal and ground.
      + - Continuity
      ECO mode switch
      Connector Terminal
      M82 4 Ground Existed

    Is the inspection result normal?

    YES 

    Check intermittent incident. Refer to INTERMITTENT INCIDENT .

    NO 

    Repair or replace error-detected parts.

  8. CHECK ECO MODE SWITCH CIRCUIT

    1. Turn ignition switch OFF.
    2. Disconnect ECO mode switch harness connector.
    3. Turn ignition switch ON.
    4. Check voltage between ECO mode switch harness connector terminals.
      ECO mode switch Voltage
      (Approx.)
      Connector + -
      Terminal
      M82 6 8 5 V

    Is the inspection result normal?

    YES 

    GO TO STEP   13  .

    NO 

    GO TO STEP 9  .

  9. CHECK GROUND CIRCUIT

    1. Turn ignition switch OFF.
    2. Check the continuity between ECO mode switch harness connector and ground.
      ECO mode switch - Continuity
      Connector Terminal
      M82 8 Ground Existed

    Is the inspection result normal?

    YES 

    GO TO STEP 10  .

    NO 

    Repair or replace damaged parts.

  10. CHECK CIRCUIT BETWEEN COMBINATION METER AND ECO MODE SWITCH (1)

    1. Disconnect combination meter harness connector M24.
    2. Check continuity between combination meter harness connector terminal and ECO mode switch harness connector terminal.
      Combination meter ECO mode switch Continuity
      Connector Terminal Connector Terminal
      M24 25 M82 6 Existed

    Is the inspection result normal?

    YES 

    GO TO STEP 11  .

    NO 

    Repair or replace damaged parts.

  11. CHECK CIRCUIT BETWEEN COMBINATION METER AND ECO MODE SWITCH (2)

    Check continuity between combination meter harness connector terminal and ECO mode switch harness connector terminal.

    Combination meter - Continuity
    Connector Terminal
    M24 25 Ground Not existed

    Is the inspection result normal?

    YES 

    GO TO STEP 12  .

    NO 

    Repair or replace damaged parts.

  12. CHECK COMBINATION METER INPUT/OUTPUT SIGNAL

    1. Connect all of disconnected connectors.
    2. Check input/output signal of combination meter. Refer to REFERENCE VALUE .

    Is the inspection result normal?

    YES 

    Check intermittent incident. Refer to INTERMITTENT INCIDENT .

    NO 

    Replace combination meter. Refer to REMOVAL AND INSTALLATION .

  13. CHECK ECO MODE SWITCH

    Check ECO mode switch. Refer to COMPONENT INSPECTION .

    Is the inspection result normal?

    YES 

    Check intermittent incident. Refer to INTERMITTENT INCIDENT .

    NO 

    Replace ECO mode switch. Refer to REMOVAL AND INSTALLATION .

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