AIR SUSPENSION SYSTEM DATA LIST / ACTIVE TEST


  1. READ DATA LIST

    Tech Tips

    Using the intelligent tester to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very useful because intermittent conditions or signals may be discovered before parts or wiring is disturbed. Reading the Data List information early in troubleshooting is one way to save diagnostic time.

    Note

    In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not.


    1. Turn the engine switch off.

    2. Connect the intelligent tester the DLC3.

    3. Turn the engine switch on (IG) and the tester ON.

    4. Enter the following menus:

      Select: Chassis / Air suspension / Data List /

    5. Read the Data List by following the directions on the tester screen.

      Air Suspension
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      (Up & Down)G Sensor FR

      G (up & down) suspension control ECU (houses acceleration sensor) reading /

      min.: -1045.29 m/s2

      max.: 1045.26 m/s2

      0 +/-0.98 m/s2at still condition

      		 Reading changes when vehicle (FR) is bounced
      (Up & Down)G Sensor FL

      G (up & down) acceleration sensor (for Front) reading /

      min.: -1045.29 m/s2

      max.: 1045.26 m/s2

      0 +/-0.98 m/s2at still condition

      		 Reading changes when vehicle (FL) is bounced
      (Up & Down)G Sensor Rear

      G (up & down) acceleration sensor (for Rear) reading /

      min.: -1045.29 m/s2

      max.: 1045.26 m/s2

      0 +/-0.98 m/s2at still condition

      		 Reading changes when vehicle (rear) is bounced
      (Back & Forth)G Sensor

      G sensor reading /

      min.: -4.5952 m/s2

      max.: 4.5593 m/s2

      0 +/-0.98 m/s2at still condition

      		 Reading changes when vehicle is bounced
      FR Height Control Sensor

      Front height control sensor RH reading /

      min.: -3276.8 mm (-129 in.)

      max.: 3276.7 mm (129 in.)

      		 - -
      FL Height Control Sensor

      Front height control sensor LH reading /

      min.: -3276.8 mm (-129 in.)

      max.: 3276.7 mm (129 in.)

      		 - -
      RR Height Control Sensor

      Rear height control sensor RH reading /

      min.: -3276.8 mm (-129 in.)

      max.: 3276.7 mm (129 in.)

      		 - -
      RL Height Control Sensor

      Rear height control sensor LH reading /

      min.: -3276.8 mm (-129 in.)

      max.: 3276.7 mm (129 in.)

      		 - -
      Height Offset Max

      Display of amount of vehicle height calibration that is possible /

      min.: 0 mm (0 in.)

      max.: 6553.5 mm (258 in.)

      min.: 0 mm (0 in.)

      max.: 20 mm (0.787 in.)

      		 -
      FR Height Adjust

      Display of vehicle height offset recorded value of front right wheel /

      min.: -3276.8 mm (-129 in.)

      max.: 3276.7 mm (129 in.)

      		 - -
      FL Height Adjust

      Display of vehicle height offset recorded value of front left wheel /

      min.: -3276.8 mm (-129 in.)

      max.: 3276.7 mm (129 in.)

      		 - -
      RR Height Adjust

      Display of vehicle height offset recorded value of rear right wheel /

      min.: -3276.8 mm (-129 in.)

      max.: 3276.7 mm (129 in.)

      		 - -
      RL Height Adjust

      Display of vehicle height offset recorded value of rear left wheel /

      min.: -3276.8 mm (-129 in.)

      max.: 3276.7 mm (129 in.)

      		 - -
      FR After Height Adjust

      Display of after-calibration vehicle height value of front right wheel /

      min.: -3276.8 mm (-129 in.)

      max.: 3276.7 mm (129 in.)

      except Sports Package:

      When vehicle height normal: 0 +/-20 mm (0 +/- 0.787 in.)

      When vehicle height changing: Varies based on vehicle height

      After HEIGHT HIGH adjustment: 20 +/- 20 mm (0.787 +/- 0.787 in.)

      		 -

      for Sports Package:

      When vehicle height normal: 0 +/-20 mm (0 +/- 0.787 in.)

      When vehicle height changing: Varies based on vehicle height

      After HEIGHT HIGH adjustment: 30 +/- 20 mm (1.181 +/- 0.787 in.)
      FL After Height Adjust

      Display of after-calibration vehicle height value of front left wheel /

      min.: -3276.8 mm (-129 in.)

      max.: 3276.7 mm (129 in.)

      except Sports Package:

      When vehicle height normal: 0 +/-20 mm (0 +/- 0.787 in.)

      When vehicle height changing: Varies based on vehicle height

      After HEIGHT HIGH adjustment: 20 +/- 20 mm (0.787 +/- 0.787 in.)

      		 -

      for Sports Package:

      When vehicle height normal: 0 +/-20 mm (0 +/- 0.787 in.)

      When vehicle height changing: Varies based on vehicle height

      After HEIGHT HIGH adjustment: 30 +/- 20 mm (1.181 +/- 0.787 in.)
      RR After Height Adjust

      Display of after-calibration vehicle height value of rear right wheel /

      min.: -3276.8 mm (-129 in.)

      max.: 3276.7 mm (129 in.)

      except Sports Package:

      When vehicle height normal: 0 +/-20 mm (0 +/- 0.787 in.)

      When vehicle height changing: Varies based on vehicle height

      After HEIGHT HIGH adjustment: 20 +/- 20 mm (0.787 +/- 0.787 in.)

      		 -

      for Sports Package:

      When vehicle height normal: 0 +/-20 mm (0 +/- 0.787 in.)

      When vehicle height changing: Varies based on vehicle height

      After HEIGHT HIGH adjustment: 30 +/- 20 mm (1.181 +/- 0.787 in.)
      RL After Height Adjust

      Display of after-calibration vehicle height value of rear left wheel /

      min.: -3276.8 mm (-129 in.)

      max.: 3276.7 mm (129 in.)

      except Sports Package:

      When vehicle height normal: 0 +/-20 mm (0 +/- 0.787 in.)

      When vehicle height changing: Varies based on vehicle height

      After HEIGHT HIGH adjustment: 20 +/- 20 mm (0.787 +/- 0.787 in.)

      		 -

      for Sports Package:

      When vehicle height normal: 0 +/-20 mm (0 +/- 0.787 in.)

      When vehicle height changing: Varies based on vehicle height

      After HEIGHT HIGH adjustment: 30 +/- 20 mm (1.181 +/- 0.787 in.)
      Stop Light Switch

      Stop light switch /

      ON or OFF

      ON: Brake pedal depressed

      OFF: Brake pedal released

      		 -
      COMFORT Switch

      Drive mode select switch "COMFORT" mode /

      ON or OFF

      ON: COMF mode

      OFF: Not in COMF mode

      		 -
      SPORT Switch

      Drive mode select switch "SPORT S+" mode /

      ON or OFF

      ON: SPORT S+ mode

      OFF: Not in SPORT S+ mode

      		 -
      Door Switch

      Door switch /

      ON or OFF

      ON: Open a door

      OFF: Close all doors

      		 -
      Damping Force Switch 1

      Height control switch /

      ON or OFF

      ON: Switch is pressed and held

      OFF: Switch is not pressed

      		 -
      Height Position

      Vehicle height position /

      Normal or Not Normal

      Normal: Vehicle height position is normal

      Not Normal: Vehicle height position is not normal

      		 -
      Height Control

      Vehicle height control condition reading /

      ON or OFF

      ON: Vehicle height control operating

      OFF: Vehicle height control not operating

      		 -
      Height Offset

      Vehicle height offset calibration condition reading /

      ON or OFF

      ON: Vehicle height offset calibration complete

      OFF: Before vehicle height offset calibration

      		 -
      HV Ready* - - -
      TD Terminal

      TD terminal /

      ON or OFF

      ON: Height control is not operating

      OFF: Height control is operating

      		 -
      TC Terminal

      TC terminal /

      ON or OFF

      ON: DTC is output

      OFF: DTC is not output

      		 -
      TS Terminal

      TS terminal /

      ON or OFF

      ON: During test mode

      OFF: Normal mode

      		 -
      IG Power Source Voltage

      ECU power supply voltage /

      min.: 0.0 V

      max.: 25.5 V

      		 Engine switch on (IG): 11 to 14 V -
      Steering Angle

      Steering angle sensor reading /

      min.: -49152.0 deg

      max. 49150.5 deg

      Actual steering angle

      Left turn: reading increases

      Right turn: reading decreases

      		 -
      Engine Speed

      Cam position sensor reading /

      min.: 0 rpm

      max.: 25,500 rpm

      		 Actual engine speed Speed indicated on the combination meter
      FR Wheel Speed

      Front right wheel speed reading /

      min.: 0 km/h (0 mph)

      max.: 255 km/h (158 mph)

      		 Actual vehicle speed Speed indicated on the combination meter
      FL Wheel Speed

      Front left wheel speed reading /

      min.: 0 km/h (0 mph)

      max.: 255 km/h (158 mph)

      		 Actual vehicle speed Speed indicated on the combination meter
      RR Wheel Speed

      Rear right wheel speed reading /

      min.: 0 km/h (0 mph)

      max.: 255 km/h (158 mph)

      		 Actual vehicle speed Speed indicated on the combination meter
      RL Wheel Speed

      Rear left wheel speed reading /

      min.: 0 km/h (0 mph)

      max.: 255 km/h (158 mph)

      		 Actual vehicle speed Speed indicated on the combination meter
      Damper Step FR

      Damper step (Front RH) /

      min.: 1 step

      max.: 255 step

      min.: 1 step

      max.: 17 step

      		 -
      Damper Step FL

      Damper step (Front LH) /

      min.: 1 step

      max.: 255 step

      min.: 1 step

      max.: 17 step

      		 -
      Damper Step RR

      Damper step (Rear RH) /

      min.: 1 step

      max.: 255 step

      min.: 1 step

      max.: 17 step

      		 -
      Damper Step RL

      Damper step (Rear LH) /

      min.: 1 step

      max.: 255 step

      min.: 1 step

      max.: 17 step

      		 -
      Max Damper Step FR

      Damper step (Front LH) /

      min.: 0 step

      max.: 255 step

      		 17 step -
      Max Damper Step FL

      Damper step (Front LH) /

      min.: 0 step

      max.: 255 step

      		 17 step -
      Max Damper Step RR

      Damper step (Rear RH) /

      min.: 0 step

      max.: 255 step

      		 17 step -
      Max Damper Step RL

      Damper step (Rear LH) /

      min.: 0 step

      max.: 255 step

      		 17 step -
      Compatible Constant Information

      Information used to change the compatible constant

      min.: 0

      max.: 255

      		 - -
      Identical Constant Information

      Information used to change the identical constant

      min.: 0

      max.: 255

      		 - -
      Design Constant Information

      Information used to change the design constant

      min.: 0

      max.: 255

      		 - -
      Number of Trouble Codes

      Number of DTC recorded /

      min.: 0

      max.: 255

      		 0 -

      Tech Tips

      *: This item is displayed on the Techstream, however, it is not used for this vehicle.

    6. Enter the following menus:

      Select: Body / Center Console Switch / Data List /

    7. Read the Data List by following the directions on the tester screen.

      Center Console Switch
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      HEIGHT HIGH Switch

      Height control switch /

      ON or OFF

      ON: Switch is pressed and held

      OFF: Switch is not pressed

      		 -
      SPORT Mode Switch

      Drive mode select switch "SPORT S+" mode /

      ON or OFF

      ON: Switch turned right and held

      OFF: Switch is not turned

      		 -
      COMFORT Mode Switch

      Drive mode select switch "COMFORT" mode /

      ON or OFF

      ON: Switch turned left and held

      OFF: Switch is not turned

      		 -

  2. PERFORM ACTIVE TEST

    Tech Tips

    Using the intelligent tester to perform Active Tests allows relays, VSVs, actuators and other items to be operated without removing any parts. This non-intrusive functional inspection can be very useful because intermittent operation may be discovered before parts or wiring is disturbed. Performing Active Tests early in troubleshooting is one way to save diagnosis time. Data List information can be displayed while performing Active Tests.


    1. Turn the engine switch off.

    2. Connect the intelligent tester to the DLC3.

    3. Turn the engine switch on (IG) and the tester ON.

    4. Enter the following menus:

      Select: Chassis / Air suspension / Active Test /

    5. Perform the Active Test by following the prompts on the tester.

      Air suspension
      Tester Display Test Part Control Range Diagnostic Note
      Damper Step FR Changes damper step (Front RH) /

      min.: 1 step

      max.: 17 step

      		 Shock absorber hardens as damper step increases
      Damper Step FL Changes damper step (Front LH) /

      min.: 1 step

      max.: 17 step

      		 Shock absorber hardens as damper step increases
      Damper Step RR Changes damper step (Rear RH) /

      min.: 1 step

      max.: 17 step

      		 Shock absorber hardens as damper step increases
      Damper Step RL Changes damper step (Rear LH) /

      min.: 1 step

      max.: 17 step

      		 Shock absorber hardens as damper step increases
      FR Wheel Up/Down Right front vehicle height / UP or DOWN -
      FL Wheel Up/Down Left front vehicle height / UP or DOWN -
      RR Wheel Up/Down Right rear vehicle height / UP or DOWN -
      RL Wheel Up/Down Left rear vehicle height / UP or DOWN -
      Front Right Solenoid Turn OFF front solenoid valve RH 1 second after turning it ON - Operation of solenoid (clicking sound) can be heard
      Front Left Solenoid Turn OFF front solenoid valve LH 1 second after turning it ON - Operation of solenoid (clicking sound) can be heard
      Rear Right Solenoid Turn OFF rear solenoid valve RH 1 second after turning it ON - Operation of solenoid (clicking sound) can be heard
      Rear Left Solenoid Turn OFF rear solenoid valve LH 1 second after turning it ON - Operation of solenoid (clicking sound) can be heard
      Motor Relay Suspension control relay / ON or OFF Operation of solenoid (clicking sound) can be heard
      Exhaust Solenoid Exhaust solenoid / ON or OFF Operation of solenoid (clicking sound) can be heard