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DTC B2503: Swivel Actuator RH

  1. CHECK SWIVEL POSITION SENSOR SIGNAL 
    1. Turn ignition switch ON.
    2. Check voltage between AFS control unit harness connector and ground.
      TERMINALS VOLTAGE REFERENCE CHART

      Terminals Voltage (Approx.)
      (+) (-)
      AFS control unit connector Terminal
      F110 9 Ground 0.25 - 4.75 V

    OK or NG 

    OK: GO TO 2.

    NG:

    • If voltage is less than approx. 0.25V, GO TO  3.
    • If voltage is more than approx. 4.75V, GO TO  6.
      Fig 1: Checking Continuity Between AFS Control Unit Harness Connector Terminal 9 And Ground
      G05214589Courtesy of NISSAN MOTOR CO., U.S.A.
  2. CHECK SWIVEL POSITION SENSOR POWER SUPPLY 

    Check voltage between AFS control unit harness connector and ground.

    TERMINALS VOLTAGE REFERENCE CHART

    Terminals Voltage (Approx.)
    (+) (-)
    AFS control unit connector Terminal
    F110 4 Ground 4.0 - 6.0 V

    OK or NG 

    OK: GO TO  12.

    NG: Replace AFS control unit. Refer to "REMOVAL AND INSTALLATION OF AFS CONTROL UNIT ".

    Fig 2: Checking Voltage Between AFS Control Unit Harness Connector Terminal 4 And Ground
    G05214590Courtesy of NISSAN MOTOR CO., U.S.A.
  3. CHECK SWIVEL POSITION SENSOR POWER SUPPLY 

    Check voltage between AFS control unit harness connector and ground.

    TERMINALS VOLTAGE REFERENCE CHART

    Terminals Voltage (Approx.)
    (+) (-)
    AFS control unit connector Terminal
    F110 4 Ground 4.0 - 6.0 V

    OK or NG 

    OK: GO TO 4.

    NG: GO TO  8.

    Fig 3: Checking Voltage Between AFS Control Unit Harness Connector Terminal 4 And Ground
    G05214590Courtesy of NISSAN MOTOR CO., U.S.A.
  4. CHECK SWIVEL POSITION SENSOR POWER SUPPLY CIRCUIT 
    1. Turn ignition switch OFF.
    2. Disconnect front combination lamp RH connector.
    3. Turn ignition switch ON.
    4. Check voltage between front combination lamp RH harness connector and ground.
      TERMINALS VOLTAGE REFERENCE CHART

      Terminals Voltage (Approx.)
      (+) (-)
      Front combination lamp RH connector Terminal
      E48 15 Ground 4.0 - 6.0 V

    OK or NG 

    OK: GO TO 5.

    NG: Repair harness or connector.

    Fig 4: Checking Voltage Between Front Combination Lamp RH Terminal 15 And Ground
    G05214592Courtesy of NISSAN MOTOR CO., U.S.A.
  5. CHECK SWIVEL POSITION SENSOR SIGNAL CIRCUIT 
    1. Turn ignition switch OFF.
    2. Disconnect AFS control unit connector.
    3. Check continuity between AFS control unit harness connector (A) and front combination lamp RH harness connector (B).
      TERMINALS CONTINUITY REFERENCE CHART

      A B Continuity
      Connector Terminal Connector Terminal
      F110 9 E48 14 Yes

    OK or NG 

    OK: Replace front combination lamp RH (swivel position sensor malfunction). Refer to "REMOVAL AND INSTALLATION OF FRONT COMBINATION LAMP ".

    NG: Repair harness or connector.

    Fig 5: Checking Continuity Between AFS Control Unit Terminal 9 And Front Combination Lamp RH Terminal 14
    G05214593Courtesy of NISSAN MOTOR CO., U.S.A.
  6. CHECK SWIVEL POSITION SENSOR GROUND 

    Check voltage between AFS control unit harness connector and ground.

    TERMINALS VOLTAGE REFERENCE CHART

    Terminals Voltage (Approx.)
    (+) (-)
    AFS control unit connector Terminal
    F110 2 Ground 0 V

    OK or NG 

    OK: GO TO 7.

    NG: Check connector for connection, bend and loose fit. If it is normal, replace AFS control unit. Refer to "REMOVAL AND INSTALLATION OF AFS CONTROL UNIT ".

    Fig 6: Checking Voltage Between AFS Control Unit Harness Connector Terminal 2 And Ground
    G05214594Courtesy of NISSAN MOTOR CO., U.S.A.
  7. CHECK SWIVEL POSITION SENSOR GROUND CIRCUIT 
    1. Turn ignition switch OFF.
    2. Disconnect AFS control unit connector and front combination lamp RH connector.
    3. Check continuity between AFS control unit harness connector (A) and front combination lamp RH harness connector (B).
      TERMINALS CONTINUITY REFERENCE CHART

      A B Continuity
      Connector Terminal Connector Terminal
      F110 2 E48 19 Yes

    OK or NG 

    OK: Replace front combination lamp RH (swivel position sensor malfunction). Refer to "REMOVAL AND INSTALLATION OF FRONT COMBINATION LAMP ".

    NG: Repair harness or connector.

    Fig 7: Checking Continuity Between AFS Control Unit Terminal 2 And Front Combination Lamp RH Terminal 19
    G05214595Courtesy of NISSAN MOTOR CO., U.S.A.
  8. CHECK DIAGNOSIS RESULT 

    Select "ADAPTIVE LIGHT" on CONSULT-III. Select "SELF-DIAG RESULTS" on "SELECT DIAG MODE" screen.

    Is DTC B2521 ECU CIRC detected? 

    Yes: Refer to "DTC B2521 ECU CIRC ".

    NO: GO TO 9.

  9. CHECK SWIVEL POSITION SENSOR POWER SUPPLY CIRCUIT 
    1. Turn ignition switch OFF.
    2. Disconnect front combination lamp RH connector.
    3. Turn ignition switch ON.
    4. Check voltage between AFS control unit harness connector and ground.
      TERMINALS VOLTAGE REFERENCE CHART

      Terminals Voltage (Approx.)
      (+) (-)
      AFS control unit connector Terminal
      F110 4 Ground 4.0 - 6.0 V

    OK or NG 

    OK: GO TO 10.

    NG: GO TO  11.

    Fig 8: Checking Voltage Between AFS Control Unit Harness Connector Terminal 4 And Ground
    G05214597Courtesy of NISSAN MOTOR CO., U.S.A.
  10. CHECK SWIVEL POSITION SENSOR SIGNAL CIRCUIT (SHORT CIRCUIT) 
    1. Turn ignition switch OFF.
    2. Disconnect AFS control unit connector.
    3. Check continuity between AFS control unit harness connector and ground.
      TERMINALS CONTINUITY REFERENCE CHART

      AFS control unit connector Terminal Ground Continuity
      F110 9 No
      Fig 9: Checking Continuity Between AFS Control Unit Harness Connector Terminal 9 And Ground
      G05214598Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    OK: Replace front combination lamp RH (swivel position sensor malfunction). Refer to "REMOVAL AND INSTALLATION OF FRONT COMBINATION LAMP ".

    NG: Repair harness or connector.

  11. CHECK SWIVEL POSITION SENSOR POWER SUPPLY CIRCUIT (SHORT CIRCUIT) 
    1. Turn ignition switch OFF.
    2. Disconnect AFS control unit connector.
    3. Check continuity between AFS control unit harness connector and ground.
      TERMINALS CONTINUITY REFERENCE CHART

      AFS control unit connector Terminal Ground Continuity
      F110 4 No

    OK or NG 

    OK: Replace AFS control unit. Refer to "REMOVAL AND INSTALLATION OF AFS CONTROL UNIT ".

    NG: Repair harness or connector.

    Fig 10: Checking Continuity Between AFS Control Unit Harness Connector Terminal 4 And Ground
    G05214599Courtesy of NISSAN MOTOR CO., U.S.A.
  12. CHECK SWIVEL MOTOR 
    1. Turn ignition switch OFF.
    2. Disconnect front combination lamp RH connector.
    3. Check continuity between front combination lamp RH connector terminals.
      TERMINALS RESISTANCE CHART

      Front combination lamp RH terminals (1 phase) Resistance
      16 20 Approx. 7.4 Ω
      Fig 11: Checking Continuity Between Front Combination Lamp Connector Terminal 16 And 20
      G05214600Courtesy of NISSAN MOTOR CO., U.S.A.
    4. Check continuity between front combination lamp RH connector terminals.
      TERMINALS RESISTANCE CHART

      Front combination lamp RH terminals (2 phase) Resistance
      17 21 Approx. 7.4 Ω
      Fig 12: Checking Continuity Between Front Combination Lamp Connector Terminal 17 And 21
      G05214601Courtesy of NISSAN MOTOR CO., U.S.A.
    5. Check continuity between front combination lamp RH connector terminals (insulation resistance).
      TERMINALS RESISTANCE CHART

      Front combination lamp RH terminals Resistance
      16 17 Approx. 1 MΩ or more

    OK or NG 

    OK: GO TO 13.

    NG: Replace front combination lamp RH (swivel motor malfunction). Refer to "REMOVAL AND INSTALLATION OF FRONT COMBINATION LAMP ".

    Fig 13: Checking Continuity Between Front Combination Lamp Connector Terminal 16 And 17
    G05214602Courtesy of NISSAN MOTOR CO., U.S.A.
  13. CHECK SWIVEL MOTOR CIRCUIT 1 
    1. Connect front combination lamp RH connector.
    2. Turn ignition switch ON.
    3. Check voltage between AFS control unit harness connector and ground.
      TERMINALS VOLTAGE REFERENCE CHART

      (+) (-) Voltage (Approx.)
      AFS control unit connector Terminal
      F110 11 Ground 9.5 - 11.5 V
      13
      32
      34

    OK or NG 

    OK: GO TO 14.

    NG: GO TO  16.

    Fig 14: Checking Voltage Between AFS Control Unit Harness Connector And Ground
    G05214603Courtesy of NISSAN MOTOR CO., U.S.A.
  14. CHECK DIAGNOSIS RESULT 1 

    Select "ADAPTIVE LIGHT" on CONSULT-III. Select "SELF-DIAG RESULTS" on "SELECT DIAG MODE" screen.

    Is DTC of present malfunction detected? 

    Yes:

    NO: GO TO 15.

  15. CHECK DIAGNOSIS RESULT 2 

    Check "SELF-DIAG RESULTS" with steering turning 180° or more to right under swivel operative condition to keep more than 2 seconds.

    Is DTC B2503 of present malfunction detected? 

    Yes: Replace front combination lamp RH (swivel actuator malfunction). Refer to "REMOVAL AND INSTALLATION OF FRONT COMBINATION LAMP ".

    No: The swivel actuator system RH is normal at present.

  16. CHECK SWIVEL MOTOR CIRCUIT 2 
    1. Turn ignition switch OFF.
    2. Disconnect AFS control unit connector and front combination lamp RH connector.
    3. Check continuity between AFS control unit harness connector (A) and front combination lamp RH harness connector (B).
      TERMINALS CONTINUITY REFERENCE CHART

      A B Continuity
      Connector Terminal Connector Terminal
      F110 11 E48 20 Yes
      13 21
      32 17
      34 16
      Fig 15: Checking Continuity Between AFS Control Unit And Front Combination Lamp Harness Connector
      G05214606Courtesy of NISSAN MOTOR CO., U.S.A.
    4. Check continuity between AFS control unit harness connector (A) and ground.
      TERMINALS CONTINUITY REFERENCE CHART

      A Ground Continuity
      Connector Terminal
      F110 11 No
      13
      32
      34

    OK or NG 

    OK: Replace AFS control unit. Refer to "REMOVAL AND INSTALLATION OF AFS CONTROL UNIT ".

    NG: Repair or replace harness or connector.

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