ADAPTIVE VARIABLE SUSPENSION SYSTEM, Diagnostic DTC:C1711, C1712, C1713, C1714

DTC Code DTC Name
C1711 Front Height Control Sensor RH Circuit Malfunction
C1712 Front Height Control Sensor LH Circuit Malfunction
C1713 Rear Height Control Sensor RH Circuit Malfunction
C1714 Rear Height Control Sensor LH Circuit Malfunction

DESCRIPTION

The height control sensor sub-assembly changes the resistance according to the change in vehicle height. The absorber control ECU outputs a fixed voltage of 5 V to the height control sensor sub-assembly SHB terminal. If the sensor's resistance value changes, the sensor's voltage changes accordingly. The suspension ECU then inputs the voltage value from the sensor to detect the vehicle height change.

DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate Memory
C1711 Front Height Control Sensor RH Circuit Malfunction

One of the following conditions is met:


  • The power source voltage of the front height control sensor sub-assembly RH is 4.3 V or less, or 5.5 V or higher continuously for 0.5 seconds.

  • The output voltage of the front height control sensor sub-assembly RH is 0.3 V or less, or 4.7 V or higher continuously for 1 second.

  • Front height control sensor sub-assembly RH stuck malfunction.

  • Front height control sensor sub-assembly RH

  • Wire harness or connector

  • Absorber control ECU

 Does not come on Yes
C1712 Front Height Control Sensor LH Circuit Malfunction

One of the following conditions is met:


  • The power source voltage of the front height control sensor sub-assembly LH is 4.3 V or less, or 5.5 V or higher continuously for 0.5 seconds.

  • The output voltage of the front height control sensor sub-assembly LH is 0.3 V or less, or 4.7 V or higher continuously for 1 seconds.

  • Front height control sensor sub-assembly LH stuck malfunction.

  • Front height control sensor sub-assembly LH

  • Wire harness or connector

  • Absorber control ECU

 Does not come on Yes
C1713 Rear Height Control Sensor RH Circuit Malfunction

One of the following conditions is met:


  • The power source voltage of the rear height control sensor sub-assembly RH is 4.3 V or less, or 5.5 V or higher continuously for 0.5 seconds.

  • The output voltage of the rear height control sensor sub-assembly RH is 0.3 V or less, or 4.7 V or higher continuously for 1 seconds.

  • Rear height control sensor sub-assembly RH stuck malfunction.

  • Rear height control sensor sub-assembly RH

  • Wire harness or connector

  • Absorber control ECU

 Does not come on Yes
C1714 Rear Height Control Sensor LH Circuit Malfunction

One of the following conditions is met:


  • The power source voltage of the rear height control sensor sub-assembly LH is 4.3 V or less, or 5.5 V or higher continuously for 0.5 seconds.

  • The output voltage of the rear height control sensor sub-assembly LH is 0.3 V or less, or 4.7 V or higher continuously for 1 seconds.

  • Rear height control sensor sub-assembly LH stuck malfunction.

  • Rear height control sensor sub-assembly LH

  • Wire harness or connector

  • Absorber control ECU

 Does not come on Yes

WIRING DIAGRAM

B000YY9E01

CAUTION / NOTICE / HINT

Note


  • Before performing troubleshooting, inspect the connectors of related circuits.

  • If DTC C1782 (Power Source Voltage Malfunction) is output at the same time, perform troubleshooting for C1782 first.

    Click here

  • Before replacing the absorber control ECU, perform all of the following:


    • Symptom simulation.

      Click here

    • DTC inspection.

      Click here

    • GTS inspection.

      Click here


      • If no malfunctions are found in other areas, replace the absorber control ECU.

  • After replacing the absorber control ECU with a new one, perform registration of vehicle identification information.

    Click here

PROCEDURE


  1. CHECK HEIGHT CONTROL SENSOR SUB-ASSEMBLY INSTALLATION CONDITION


    1. Check the height control sensor sub-assembly installation condition and make sure that there are no loose installation bolts and foreign matter trapped between the sensor and body.

      OK
      Installed correctly.
      Result
      Proceed to
      OK
      NG

    NG

    INSTALL HEIGHT CONTROL SENSOR SUB-ASSEMBLY CORRECTLY for Front Side : Click here
    INSTALL HEIGHT CONTROL SENSOR SUB-ASSEMBLY CORRECTLY for Rear Side : Click here

    OK

  2. CHECK HEIGHT CONTROL SENSOR SUB-ASSEMBLY


    1. Check the height control sensor sub-assembly condition and make sure that there is no link deformation.

      OK
      No deformation.
      Result
      Result Proceed to
      OK A
      Front height control sensor sub-assembly RH B
      Front height control sensor sub-assembly LH C
      Rear height control sensor sub-assembly RH D
      Rear height control sensor sub-assembly LH E

    B

    REPLACE FRONT HEIGHT CONTROL SENSOR SUB-ASSEMBLY RH Click here

    C

    REPLACE FRONT HEIGHT CONTROL SENSOR SUB-ASSEMBLY LH Click here

    D

    REPLACE REAR HEIGHT CONTROL SENSOR SUB-ASSEMBLY RH Click here

    E

    REPLACE REAR HEIGHT CONTROL SENSOR SUB-ASSEMBLY LH Click here

    A

  3. INSPECT HEIGHT CONTROL SENSOR SUB-ASSEMBLY (FRONT OR REAR)


    1. For Front Side.


      1. Turn the engine switch off.

      2. Remove the front height control sensor sub-assembly RH or front height control sensor sub-assembly LH.

        Click here

      3. Inspect the front height control sensor sub-assembly RH or front height control sensor sub-assembly LH.

        Click here

    2. For Rear Side.


      1. Turn the engine switch off.

      2. Remove the rear height control sensor sub-assembly RH or rear height control sensor sub-assembly LH.

        Click here

      3. Inspect the rear height control sensor sub-assembly RH or rear height control sensor sub-assembly LH.

        Click here

      Result
      Result Proceed to
      OK (for Front Side) A
      OK (for Rear Side) B
      Front height control sensor sub-assembly RH malfunction C
      Front height control sensor sub-assembly LH malfunction D
      Rear height control sensor sub-assembly RH malfunction E
      Rear height control sensor sub-assembly LH malfunction F

    B

    INSPECT SKID CONTROL SENSOR WIRE Click here

    C

    REPLACE FRONT HEIGHT CONTROL SENSOR SUB-ASSEMBLY RH Click here

    D

    REPLACE FRONT HEIGHT CONTROL SENSOR SUB-ASSEMBLY LH Click here

    E

    REPLACE REAR HEIGHT CONTROL SENSOR SUB-ASSEMBLY RH Click here

    F

    REPLACE REAR HEIGHT CONTROL SENSOR SUB-ASSEMBLY LH Click here

    A

  4. CHECK HARNESS AND CONNECTOR (FRONT HEIGHT CONTROL SENSOR SUB-ASSEMBLY - ABSORBER CONTROL ECU)


    1. Check the front height control sensor sub-assembly RH harness and connector.


      1. Turn the engine switch off.

      2. Disconnect the A35 front height control sensor sub-assembly RH connector.

      3. Disconnect the X39 absorber control ECU connector.

      4. Measure the resistance according to the value(s) in the table below.

        Standard Resistance
        Tester Connection Condition Specified Condition
        A35-1 (SHG) - X39-11 (SHG1) Always Below 1 Ω
        A35-2 (SHFR) - X39-12 (SHFR)
        A35-3 (SHB) - X39-10 (SHB1)
        A35-1 (SHG) or X39-11 (SHG1) - Body ground Always 10 kΩ or higher
        A35-2 (SHFR) or X39-12 (SHFR) - Body ground
        A35-3 (SHB) or X39-10 (SHB1) - Body ground

    2. Check the front height control sensor sub-assembly LH harness and connector.


      1. Turn the engine switch off.

      2. Disconnect the A34 front height control sensor sub-assembly LH connector.

      3. Disconnect the X39 absorber control ECU connector.

      4. Measure the resistance according to the value(s) in the table below.

        Standard Resistance
        Tester Connection Condition Specified Condition
        A34-1 (SHG) - X39-21 (SHG2) Always Below 1 Ω
        A34-2 (SHFL) - X39-20 (SHFL)
        A34-3 (SHB) - X39-9 (SHB2)
        A34-1 (SHG) or X39-21 (SHG2) - Body ground Always 10 kΩ or higher
        A34-2 (SHFL) or X39-20 (SHFL) - Body ground
        A34-3 (SHB) or X39-9 (SHB2) - Body ground
      Result
      Result
      OK
      NG

    OK

    REPLACE ABSORBER CONTROL ECU Click here

    NG

    REPAIR OR REPLACE HARNESS AND CONNECTOR

  5. INSPECT SKID CONTROL SENSOR WIRE


    1. Turn the engine switch off.

    2. Disconnect the X121 or tX2 skid control sensor wire connector.

    3. Disconnect the z37 or t3 skid control sensor wire connector.

    4. Measure the resistance according to the value(s) in the table below.

      B000WIPC02
      *A RH *B LH
      *1 Skid Control Sensor Wire - -
      *a

      Front view of wire harness connector

      (to Rear Height Control Sensor Sub-assembly Side Connector)

      		 *b

      Front view of wire harness connector

      (to Vehicle Side Connector)
      Standard Resistance
      for RH
      Tester Connection Condition Specified Condition
      X121-1 (SHRR) - z37-2 (SHRR) Always Below 1 Ω
      X121-2 (SHB) - z37-3 (SHB)
      X121-5 (SHG) - z37-1 (SHG)
      X121-1 (SHRR) or z37-2 (SHRR) - Body ground and other terminals Always 10 kΩ or higher
      X121-2 (SHB) or z37-3 (SHB) - Body ground and other terminals
      X121-5 (SHG) or z37-1 (SHG) - Body ground and other terminals
      Standard Resistance
      for LH
      Tester Connection Condition Specified Condition
      tX2-1 - t3-2 (SHRL) Always Below 1 Ω
      tX2-2 - t3-3 (SHB)
      tX2-5 - t3-1 (SHG)
      tX2-1 or t3-2 (SHRL) - Body ground and other terminals Always 10 kΩ or higher
      tX2-2 or t3-3 (SHB) - Body ground and other terminals
      tX2-5 or t3-1 (SHG) - Body ground and other terminals
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE SKID CONTROL SENSOR WIRE Click here

    OK

  6. CHECK HARNESS AND CONNECTOR (REAR HEIGHT CONTROL SENSOR SUB-ASSEMBLY - ABSORBER CONTROL ECU)


    1. Check the rear height control sensor sub-assembly RH harness and connector.


      1. Turn the engine switch off.

      2. Disconnect the X22 absorber control ECU connector.

      3. Connect the X121 skid control sensor wire RH connector.

      4. Measure the resistance according to the value(s) in the table below.

        Standard Resistance
        Tester Connection Condition Specified Condition
        z37-1 (SHG) - X22-10 (SHG3) Always Below 1 Ω
        z37-2 (SHRR) - X22-11 (SHRR)
        z37-3 (SHB) - X22-12 (SHB3)
        z37-1 (SHG) or X22-10 (SHG3) - Body ground Always 10 kΩ or higher
        z37-2 (SHRR) or X22-11 (SHRR) - Body ground
        z37-3 (SHB) or X22-12 (SHB3) - Body ground

    2. Check the rear height control sensor sub-assembly LH harness and connector.


      1. Turn the engine switch off.

      2. Disconnect the X22 absorber control ECU connector.

      3. Connect the tX2 skid control sensor wire LH connector.

      4. Measure the resistance according to the value(s) in the table below.

        Standard Resistance
        Tester Connection Condition Specified Condition
        t3-1 (SHG) - X22-22 (SHG4) Always Below 1 Ω
        t3-2 (SHRL) - X22-21 (SHRL)
        t3-3 (SHB) - X22-13 (SHB4)
        t3-1 (SHG) or X22-22 (SHG4) - Body ground Always 10 kΩ or higher
        t3-2 (SHRL) or X22-21 (SHRL) - Body ground
        t3-3 (SHB) or X22-13 (SHB4) - Body ground
      Result
      Result
      OK
      NG

    OK

    REPLACE ABSORBER CONTROL ECU Click here

    NG

    REPAIR OR REPLACE HARNESS AND CONNECTOR