Lexus NX: Data List / Active Test

DATA LIST / ACTIVE TEST

READ DATA LIST

HINT:

Using the Techstream 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.

(a) Turn the power switch off.

(b) Connect the Techstream to the DLC3.

(c) Turn the power switch on (IG).

(d) Turn the Techstream on.

(e) Enter the following menus: Chassis / Air suspension / Data List.

(f) According to the display on the Techstream, read the Data List.

Chassis > Air suspension > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

(Up&Down)G Sensor FR

Front acceleration sensor RH (up and down)

Min.: -1045.29 m/s2

Max.: 1045.26 m/s2

-0.98 to 0.98 m/s2 when stationary

The value changes when the vehicle (front RH) is bounced.

(Up&Down)G Sensor FL

Front acceleration sensor LH (up and down)

Min.: -1045.29 m/s2

Max.: 1045.26 m/s2

-0.98 to 0.98 m/s2 when stationary

The value changes when the vehicle (front LH) is bounced.

(Up&Down)G Sensor Rear

Rear acceleration sensor (up and down)

Min.: -1045.29 m/s2

Max.: 1045.26 m/s2

-0.98 to 0.98 m/s2 when stationary

The value changes when the vehicle (rear) is bounced.

Gravity Sensor(Side to Side)

Acceleration sensor (side to side)

Min.: -1176.37 m/s2

Max.: 1176.33 m/s2

Changes depending on acceleration generated when turning

-

Stop Light Switch

Stop light switch

ON or OFF

ON: Brake pedal depressed

OFF: Brake pedal released

-

SPORT Switch

Drive mode select switch

ON or OFF

ON: During Sport S+ mode or Custom mode (when the CHASSIS item is set to SPORT)

OFF: Not in Sport S+ mode or Custom mode (when the CHASSIS item is set to SPORT)

-

HV Ready

HV ready

ON or OFF

ON: Ready on

OFF: Ready off

-

TC Terminal

TC terminal

ON or OFF

ON: DTC output

OFF: DTC not output

-

TS Terminal

TS terminal

ON or OFF

ON: During test mode

OFF: During normal mode

-

IG Power Source Voltage

ECU power supply voltage

Min.: 0.0 V

Max.: 25.5 V

11 to 14 V (Actual ECU power supply voltage): Power switch on (IG)

-

Steering Angle

Steering sensor reading

Min.: -49152.0 deg

Max.: 49150.5 deg

Actual steering angle

Steering wheel turned left: reading increases

Steering wheel turned right: reading decreases

-

Engine Speed

Engine speed

Min.: 0 rpm

Max.: 25500 rpm

Actual engine speed

-

FR Wheel Speed

Front speed sensor RH reading

Min.: 0 km/h (0 mph)

Max.: 255 km/h (159 mph)

Actual vehicle speed

No large fluctuations when driving at a constant speed.

FL Wheel Speed

Front speed sensor LH reading

Min.: 0 km/h (0 mph)

Max.: 255 km/h (159 mph)

Actual vehicle speed

No large fluctuations when driving at a constant speed.

RR Wheel Speed

Rear speed sensor RH reading

Min.: 0 km/h (0 mph)

Max.: 255 km/h (159 mph)

Actual vehicle speed

No large fluctuations when driving at a constant speed.

RL Wheel Speed

Rear speed sensor LH reading

Min.: 0 km/h (0 mph)

Max.: 255 km/h (159 mph)

Actual vehicle speed

No large fluctuations when driving at a constant speed.

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 30 step

-

Damper Step FL

Damper step (front LH)

Min.: 1 step

Max.: 255 step

1 to 30 step

-

Damper Step RR

Damper step (rear RH)

Min.: 1 step

Max.: 255 step

1 to 30 step

-

Damper Step RL

Damper step (rear LH)

Min.: 1 step

Max.: 255 step

1 to 30 step

-

Max Damper Step FR

Max. damper step (front RH)

Min.: 0 step

Max.: 255 step

30 step

-

Max Damper Step FL

Max. damper step (front LH)

Min.: 0 step

Max.: 255 step

30 step

-

Max Damper Step RR

Max. damper step (rear RH)

Min.: 0 step

Max.: 255 step

30 step

-

Max Damper Step RL

Max. damper step (rear LH)

Min.: 0 step

Max.: 255 step

30 step

-

Adaptive Variable Suspension(AVS) Mode

Adaptive variable suspension system (AVS) mode

NORMAL, COMFORT, SEMI CO, SEMI SP or SPORTS

NORMAL: Not in Sport S+ mode or Custom mode (when the CHASSIS item is set to SPORT)

SPORTS: During Sport S+ mode or Custom mode (when the CHASSIS item is set to SPORT)

-

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

-

-

AVS Control Information FR

AVS control information (front wheel RH)

Min.: 0

Max.: 255

-

-

AVS Control Information FL

AVS control information (front wheel LH)

Min.: 0

Max.: 255

-

-

AVS Control Information RR

AVS control information (rear wheel RH)

Min.: 0

Max.: 255

-

-

AVS Control Information RL

AVS control information (rear wheel LH)

Min.: 0

Max.: 255

-

-

Vehicle Information (Conv/HV)

Vehicle identification information (hybrid vehicle or except hybrid vehicle)

Unknown, Conv or HV

HV: Hybrid vehicle

When "Unknown", DTC C1789 is output.

Stop and Start Learning Status

Learning status of stop and start setting availability after vehicle identification information registration is performed

Unset, OFF or ON

OFF

When "Unset", DTC C1789 is output.

Overheat Protection Control Count

Number of times overheat protection was performed in past

Min.: 0

Max.: 255

Displays number of times overheat protection was performed in past

-

ECU Substrate Maximum Temperature

Stored ECU substrate maximum temperature

Min.: 40°C

Max.: 120°C

Displays maximum temperature of ECU substrate in past

-

Status of Overheat Protection Control

Current overheat protection status

ON or OFF

OFF: No overheat protection

ON: When overheat protection is on, damping force control stops until the temperature drops below a certain value.

G Sensor Voltage

G sensor power supply voltage

Min.: 0 V

Max.: 25.5 V

4.8 to 5.2 V

-

ECU Substrate Temperature

Current ECU substrate temperature

Min.: 40°C

Max.: 120°C

Displays current ECU substrate temperature

-

FR Solenoid Aim Electric Current Level for Control

Target solenoid current value (front wheel RH)

Min.: 0 mA

Max.: 2040 mA

Changes depending on step count

-

FL Solenoid Aim Electric Current Level for Control

Target solenoid current value (front wheel LH)

Min.: 0 mA

Max.: 2040 mA

Changes depending on step count

-

RR Solenoid Aim Electric Current Level for Control

Target solenoid current value (rear wheel RH)

Min.: 0 mA

Max.: 2040 mA

Changes depending on step count

-

RL Solenoid Aim Electric Current Level for Control

Target solenoid current value (rear wheel LH)

Min.: 0 mA

Max.: 2040 mA

Changes depending on step count

-

FR Solenoid Drive Duty

Solenoid drive duty value (front wheel RH)

Min.: 0%

Max.: 100%

Changes depending on step count

-

FL Solenoid Drive Duty

Solenoid drive duty value (front wheel LH)

Min.: 0%

Max.: 100%

Changes depending on step count

-

RR Solenoid Drive Duty

Solenoid drive duty value (rear wheel RH)

Min.: 0%

Max.: 100%

Changes depending on step count

-

RL Solenoid Drive Duty

Solenoid drive duty value (rear wheel LH)

Min.: 0%

Max.: 100%

Changes depending on step count

-

FR Solenoid Electric Current

Solenoid current value (front wheel RH)

Min.: 0 mA

Max.: 2040 mA

Changes depending on step count

-

FL Solenoid Electric Current

Solenoid current value (front wheel LH)

Min.: 0 mA

Max.: 2040 mA

Changes depending on step count

-

RR Solenoid Electric Current

Solenoid current value (rear wheel RH)

Min.: 0 mA

Max.: 2040 mA

Changes depending on step count

-

RL Solenoid Electric Current

Solenoid current value (rear wheel LH)

Min.: 0 mA

Max.: 2040 mA

Changes depending on step count

-

Number of Trouble Codes

Number of DTCs stored

Min.: 0

Max.: 255

0

-

PERFORM ACTIVE TEST

HINT:

Using the Techstream 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.

(a) Turn the power switch off.

(b) Connect the Techstream to the DLC3.

(c) Turn the power switch on (READY).

(d) Turn the Techstream on.

(e) Enter the following menus: Chassis / Air suspension / Active Test.

(f) According to the display on the Techstream, perform the Active Test.

Chassis > Air suspension > Active Test

Tester Display

Measurement Item

Control Range

Diagnostic Note

Damper Step FR

Changes damper step (front RH)

1 to 30 step

The shock absorber hardens as the damper step increases.

Damper Step FL

Changes damper step (front LH)

1 to 30 step

The shock absorber hardens as the damper step increases.

Damper Step RR

Changes damper step (rear RH)

1 to 30 step

The shock absorber hardens as the damper step increases.

Damper Step RL

Changes damper step (rear LH)

1 to 30 step

The shock absorber hardens as the damper step increases.

Four-Wheel Damping Force Full Hard

Four-wheel damper step fixed at full hard (30 step)

ON or OFF

-

Four-Wheel Damping Force Full Soft

Four-wheel damper step fixed at full soft (1 step)

ON or OFF

-

READ NEXT:

 Diagnostic Trouble Code Chart

DIAGNOSTIC TROUBLE CODE CHART Adaptive Variable Suspension System DTC No. Detection Item Warning Indicate Link C1715 Front Acceleration Sensor RH Malfunction Does not come on

 Front Acceleration Sensor RH Malfunction (C1715-C1717,C1796-C1798)

DESCRIPTION The acceleration sensor assembly (up and down G sensor) detects the upward and downward acceleration of the vehicle and outputs it as a voltage to the absorber control ECU. Up and down G s

 Front Damping Force Control Actuator RH Circuit Malfunction (C1731-C1734)

DESCRIPTION The absorber control actuator changes the damping force depending on absorber control ECU signals. DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate

SEE MORE:

 Vehicle Control History

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