Air Suspension System Data List / Active Test

  1. READ DATA LIST

  1. PERFORM ACTIVE TEST

Air Suspension System -- Data List / Active Test



READ DATA LIST
HINT:
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.
NOTICE:
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. Warm up the engine.

  2. Connect the intelligent tester to the DLC3.

  3. Turn the ignition switch to ON.

  4. Turn ON the intelligent tester.

  5. Enter the following menus: Chassis / Air suspension / Data List.

  6. According to the display on the tester, read the Data List.

    Air Suspension
    Tester Display
    		Measurement Item/Range
    		Normal Condition
    		Diagnostic Note
    (Up & Down) G Sensor FR
    		(Up & Down) G sensor (Front RH) /
    Min.: -1045.29 m/s2
    Max.: 1045.26 m/s2
    		0 +/- 0.98 m/s2 when stationary
    		The value changes when the vehicle (front RH) is bounced.
    (Up & Down) G Sensor FL
    		(Up & Down) G sensor (Front LH) /
    Min.: -1045.29 m/s2
    Max.: 1045.26 m/s2
    		0 +/- 0.98 m/s2 when stationary
    		The value changes when the vehicle (front LH) is bounced.
    (Up & Down) G Sensor Rear
    		(Up & Down) G sensor (Rear) /
    Min.: -1045.29 m/s2
    Max.: 1045.26 m/s2
    		0 +/- 0.98 m/s2 when stationary
    		The value changes when the vehicle (rear) is bounced.
    Gravity Sensor (Side to Side)
    		Gravity sensor (Side to Side) /
    Min.: -1176.37 m/s2
    Max.: 1176.33 m/s2
    		-
    		-
    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.)
    		-
    		-
    Damping Control Switch
    		Absorber control switch /
    NORMAL, COMFORT or SPORT
    		Indicates current absorber control switch position
    		-
    Stop Light Switch
    		Stop light switch /
    ON or OFF
    		ON: Brake pedal depressed
    OFF: Brake pedal released
    		-
    Door Switch
    		Door switch /
    ON or OFF
    		ON: Any doors open
    OFF: All doors closed
    		-
    Height Control Switch (Up)
    		Height control switch ("up" side) /
    ON or OFF
    		ON: Switch pressed and held
    OFF: Switch not pressed
    		-
    Height Control Switch (Down)
    		Height control switch ("down" side) /
    ON or OFF
    		ON: Switch pressed and held
    OFF: Switch not pressed
    		-
    Height Position
    		Vehicle height position /
    Normal or Not Normal
    		Normal: Vehicle height position normal
    Not Normal: Vehicle height position not normal
    		-
    Height Control
    		Vehicle height control condition information /
    ON or OFF
    		ON: Vehicle height control operating
    OFF: Vehicle height control not operating
    		-
    TD Terminal
    		TD terminal /
    ON or OFF
    		ON: Height control not operating
    OFF: Height control operating
    		-
    TC Terminal
    		TC terminal /
    ON or OFF
    		OFF
    		-
    TS Terminal
    		TS terminal /
    ON or OFF
    		OFF
    		-
    L4 Switch
    		Transfer L4 detection switch /
    ON or OFF
    		ON: Transfer in L4 position
    OFF: Transfer not in L4 position
    		-
    IG Power Source Voltage
    		Actual ECU power supply voltage /
    Min.: 0.0 V
    Max.: 25.5 V
    		Ignition switch ON: 11 to 14 V
    		-
    +B Power Source Voltage
    		Actual battery power supply voltage /
    Min.: 0.0 V
    Max.: 25.5 V
    		Ignition switch ON: 11 to 14 V
    		-
    Steering Angle
    		Steering angle /
    Min.: -49152.0 deg
    Max.: 49150.5 deg
    		Actual steering angle
    Turned left: reading increases
    Turned right: reading decreases
    		-
    Engine Speed
    		Engine speed value /
    Min.: 0 rpm
    Max.: 25500 rpm
    		Actual engine speed
    		No large fluctuations when the engine speed is constant.
    FR Wheel Speed
    		Front wheel RH speed value /
    Min.: 0 km/h (0 mph)
    Max.: 255 km/h (158 mph)
    		Actual vehicle speed
    		No large fluctuations when the engine speed is constant.
    FL Wheel Speed
    		Front wheel LH speed value /
    Min.: 0 km/h (0 mph)
    Max.: 255 km/h (158 mph)
    		Actual vehicle speed
    		No large fluctuations when the engine speed is constant.
    RR Wheel Speed
    		Rear wheel RH speed value /
    Min.: 0 km/h (0 mph)
    Max.: 255 km/h (158 mph)
    		Actual vehicle speed
    		No large fluctuations when the engine speed is constant.
    RL Wheel Speed
    		Rear wheel LH speed value /
    Min.: 0 km/h (0 mph)
    Max.: 255 km/h (158 mph)
    		Actual vehicle speed
    		No large fluctuations when the engine speed is constant.
    Driving Torque
    		Driving torque /
    Min.: -1024 Nm
    Max.: 1023 Nm
    		-
    		-
    Damper Step FR
    		Damper step (Front RH) /
    Min.: 1 step
    Max.: 255 step
    		1 to 16 step
    		-
    Damper Step FL
    		Damper step (Front LH) /
    Min.: 1 step
    Max.: 255 step
    		1 to 16 step
    		-
    Damper Step RR
    		Damper step (Rear RH) /
    Min.: 1 step
    Max.: 255 step
    		1 to 16 step
    		-
    Damper Step RL
    		Damper step (Rear LH) /
    Min.: 1 step
    Max.: 255 step
    		1 to 16 step
    		-
    Max Damper Step FR
    		Max damper step (Front RH) /
    Min.: 0 step
    Max.: 255 step
    		16 step
    		-
    Max Damper Step FL
    		Max damper step (Front LH) /
    Min.: 0 step
    Max.: 255 step
    		16 step
    		-
    Max Damper Step RR
    		Max damper step (Rear RH) /
    Min.: 0 step
    Max.: 255 step
    		16 step
    		-
    Max Damper Step RL
    		Max damper step (Rear LH) /
    Min.: 0 step
    Max.: 255 step
    		16 step
    		-
    Adaptive Variable Suspension (AVS) Mode
    		Adaptive variable suspension (AVS) mode /
    NORMAL, COMFORT, SEMI CO, SEMI SP, SPORTS
    		Indicates current absorber control switch position
    		-
    Height Mode
    		Height mode /
    NORMAL, ACCE LO, LO, STAN LO, FAST LO, L4 HI, HI, EX HI or LUGG LO
    		NORMAL: Height control N mode
    LO: Height control LO mode
    HI: Height control HI mode
    		-
    Height Control Prohibition
    		Height control prohibition /
    Permiss or Prohibi
    		Permiss: Height control permitted
    Prohibi: Height control prohibited
    		-
    Rear Gate Solenoid
    		Status of rear gate solenoid /
    ON or OFF
    		ON: Gate solenoid operated
    OFF: Gate solenoid not operated
    		-
    Rear Leveling Solenoid
    		Status of rear leveling solenoid /
    ON or OFF
    		ON: Leveling solenoid operated
    OFF: Leveling solenoid not operated
    		-
    Exhaust Solenoid
    		Status of the exhaust solenoid /
    ON or OFF
    		ON: Exhaust solenoid valve operated
    OFF: Exhaust solenoid valve not operated
    		-
    Motor Relay
    		Status of the motor relay /
    ON or OFF
    		ON: Compressor operated
    OFF: Compressor not operated
    		-
    Main Relay
    		Status of the main relay /
    ON or OFF
    		ON: Main relay on (Ignition switch ON)
    OFF: Main relay off
    		-
    Compatible Constant Information
    		Compatible constant information /
    Min.: 0
    Max.: 255
    		-
    		-
    Identical Constant Information
    		Identical constant information /
    Min.: 0
    Max.: 255
    		-
    		-
    Design Constant Information
    		Vehicle identification information number /
    Min.: 0
    Max.: 255
    		-
    		-
    Number of Trouble Codes
    		Number of DTCs stored /
    Min.: 0
    Max.: 255
    		0
    		-


PERFORM ACTIVE TEST
HINT:
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 diagnostic time. Data List information can be displayed while performing Active Tests.

  1. Warm up the engine.

  2. Connect the intelligent tester to the DLC3.

  3. Turn the ignition switch to ON.

  4. Turn ON the intelligent tester.

  5. Enter the following menus: Chassis / Air suspension / Active Test.

  6. According to the display on the tester, perform the Active Test.

    Air Suspension
    Tester Display
    		Test Part
    		Control Range
    		Diagnostic Note
    Damper Step FR
    		Changes damper step (Front RH)
    		1 to 16 step
    		The shock absorber hardens as the damper step increases.
    Damper Step FL
    		Changes damper step (Front LH)
    		1 to 16 step
    		The shock absorber hardens as the damper step increases.
    Damper Step RR
    		Changes damper step (Rear RH)
    		1 to 16 step
    		The shock absorber hardens as the damper step increases.
    Damper Step RL
    		Changes damper step (Rear LH)
    		1 to 16 step
    		The shock absorber hardens as the damper step increases.
    Rear Wheel Up/Down
    		Rear vehicle height
    		OFF, Up or Down
    		-
    Rear Gate Solenoid
    		Gate solenoid valve
    		ON or OFF
    1. The operating sound of the solenoid (clicking sound) can be heard.
    2. When the Active Test is performed, Rear Gate Solenoid in the Data List changes between ON and OFF accordingly.
    Rear Leveling Solenoid
    		Leveling solenoid valve
    		ON or OFF
    1. The operating sound of the solenoid (clicking sound) can be heard.
    2. When the Active Test is performed, Rear Leveling Solenoid in the Data List changes between ON and OFF accordingly.
    Exhaust Solenoid
    		Exhaust solenoid valve
    		ON or OFF
    1. The operating sound of the solenoid (clicking sound) can be heard.
    2. When the Active Test is performed, Exhaust Solenoid in the Data List changes between ON and OFF accordingly.
    Compressor Motor Relay
    		AIR SUS relay
    		ON or OFF
    1. The operating sound of the relay (clicking sound) can be heard.
    2. When the Active Test is performed, Compressor Motor Relay in the Data List changes between ON and OFF accordingly.