Lexus NX: Data List / Active Test
DATA LIST / ACTIVE TEST
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.
- When diagnosing symptoms such as hesitation, rough idle, or other small symptoms using vehicle control history, compare data extracted from the same vehicle model in the same conditions and make sure to analyze all data in its entirety before making a diagnosis.
DATA LIST
(a) Connect the Techstream to the DLC3.
(b) Turn the power switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Powertrain / Radar Cruise1*1 or Radar Cruise2*2 / Data List.
- *1: Output from the hybrid vehicle control ECU
- *2: Output from the forward recognition camera
(e) Radar Cruise1:
Read the Data List according to the display on the Techstream.
Powertrain > Radar Cruise1 > Data List| Tester Display | Measurement Item | Range | Normal Condition | Diagnostic Note |
|---|---|---|---|---|
| Cruise Vehicle Speed | Vehicle speed for cruise control | 0 km/h (0 mph) to 255 km/h (158 mph) | During cruise control: Almost same as meter vehicle speed | - |
| Cruise Memory Vehicle Speed | Vehicle speed when cruise control is set | 0 km/h (0 mph) to 255 km/h (158 mph) | When cruise is set: Vehicle speed when cruise was set | - |
| Cruise Request Throttle Opening Angle | Cruise requested position | 0.00 to 124.99 deg | Changes depending on the conditions of the dynamic radar cruise control system | - |
| Vehicle Acceleration | Acceleration condition while driving the vehicle | -13.10 to 13.10 m/s2 | Current value displayed | - |
| Cruise Target Acceleration | Target acceleration while in cruise control mode | -13.10 to 13.10 m/s2 | Current value displayed | - |
| Driving Support ECU Target Acceleration | - | - | - | Cannot be used |
| Acceleration Continuation Decision | - | - | - | Cannot be used |
| Output Driving Force | - | - | - | Cannot be used |
| Cruise Request Driving Force | Cruise request torque signal | -10.00 to 9.92 kN | Changes depending on the conditions of the dynamic radar cruise control system | - |
| Cruise Request Driving Force Feedback Status | - | - | - | Cannot be used |
| Cruise Control Permission Condition | - | - | - | Cannot be used |
| Cruise Control Condition | - | - | - | Cannot be used |
| Cruise Control Mode | Cruise control mode condition | Vehicle Distance Control Mode (All Speed), Vehicle Distance Control Mode or Constant Speed Control Mode | Vehicle Distance Control Mode (All Speed): Vehicle distance control mode (All Speed) operating Vehicle Distance Control Mode: Vehicle distance control mode operating Constant Speed Control Mode: Constant speed control mode operating | - |
| Cruise Request Gear Position | Shift request from hybrid vehicle control ECU | None or 255 Gear | Shift request from dynamic radar cruise control system | - |
| Cruise Acceleration and Deceleration Operation Condition | - | - | - | Cannot be used |
| Cancel Switch | CANCEL switch status | ON or OFF | ON: CANCEL switch pushed OFF: CANCEL switch not pushed | - |
| -SET Switch | -SET switch status | ON or OFF | ON: -SET switch pushed OFF: -SET switch not pushed | - |
| +RES Switch | +RES switch status | ON or OFF | ON: +RES switch pushed OFF: +RES switch not pushed | - |
| Cruise Main Switch Operation Condition | Cruise control main switch status | ON or OFF | ON: Cruise control main switch pushed OFF: Cruise control main switch not pushed | - |
| Cruise Ready Main-CPU | Dynamic radar cruise control system standby condition | ON or OFF | ON: Cruise control main switch pushed OFF: Cruise control main switch not pushed | - |
| Cruise Ready Sub-CPU | Dynamic radar cruise control system standby condition | ON or OFF | ON: Cruise control main switch pushed OFF: Cruise control main switch not pushed | - |
| Accelerator Pedal | Condition of the accelerator pedal during cruising | ON or OFF | ON: Accelerator pedal depressed OFF: Accelerator pedal released | - |
| Stop Light Switch Sub-CPU | - | - | - | Cannot be used |
| Request Manual Cancel | - | - | - | Cannot be used |
| Request Automatic Cancel | - | - | - | Cannot be used |
| Cruise Brake Control Decision | Cruise brake control decision | ON or OFF | ON: Cruise brake activated OFF: Cruise brake deactivated | - |
| Cruise Brake Control Permission Condition | - | - | - | Cannot be used |
| Cruise Indicator | Cruise control indicator status | ON or OFF | ON: Cruise control indicator illuminates OFF: Cruise control indicator turns off | - |
| Wheel Speed Sensor and Deceleration Sensor | Speed sensor signal and deceleration sensor signal condition | Avail or Not Avl | Avail: Speed sensor signal and deceleration sensor signal available Not Avl: Speed sensor signal and deceleration sensor signal not available | - |
| Gradient of Road Surface | - | - | - | Cannot be used |
(f) Radar Cruise2:
Read the Data List according to the display on the Techstream.
Powertrain > Radar Cruise2 > Data List| Tester Display | Measurement Item | Range | Normal Condition | Diagnostic Note |
|---|---|---|---|---|
| Total Distance Traveled | - | - | - | Cannot be used |
| Total Distance Traveled - Unit | - | - | - | Cannot be used |
| Cruise Control Main Switch | Cruise control main switch status | ON or OFF | ON: Cruise control main switch pushed OFF: Cruise control main switch not pushed | - |
| Vehicle-to-vehicle Distance Control Switch | Vehicle-to-vehicle distance control switch signal | ON or OFF | ON: Vehicle-to-vehicle distance control switch pushed OFF: Vehicle-to-vehicle distance control switch not pushed | - |
| Cruise Control Mode | Cruise control mode signal | Vehicle-to-vehicle Distance Control (All Speed), Vehicle-to-vehicle Distance Control (Hi Speed) or Constant Speed Control | Vehicle-to-vehicle Distance Control (All Speed): Vehicle-to-vehicle distance control mode (w/ Full-Speed Range Following Function) Vehicle-to-vehicle Distance Control (Hi Speed): Vehicle-to-vehicle distance control mode (w/o Full-Speed Range Following Function) Constant Speed Control: Constant speed control mode | - |
| Vehicle Speed | Vehicle speed | 0 km/h (0 mph) to 327.67 km/h (204 mph) | Actual vehicle speed | - |
| Yaw Rate Sensor Signal | Yaw rate value | -100.00 to 100.00 deg/s | Actual yaw rate value | - |
| Steering Angle Signal | Steering sensor signal | -3072.0 to 3070.5 deg | Increase: Turning left Decrease: Turning right | - |
| Zero Point of Steering Angle Memorized in Steering Angle Sensor | Zero point steering angle sensor | -3072.0 to 3070.5 deg | Actual zero point steering angle | - |
| Estimated Vehicle Acceleration | Estimated acceleration condition while driving the vehicle | -5.00 to 5.00 m/s2 | Current value displayed | - |
| Accelerator Pedal Idle | Accelerator pedal idle position signal | ON or OFF | ON: Accelerator pedal released OFF: Accelerator pedal depressed | - |
| Forward Vehicle Distance | Distance to preceding vehicle | 0 to 255 m | Current value displayed | - |
| Forward Vehicle Relative Speed | Relative speed against preceding vehicle | -128 km/h (-80 mph) to 127 km/h (79 mph) | Current value displayed | - |
| Cruise Warning Request | Forward vehicle approach warning signal | ON or OFF | ON: Forward vehicle approaching OFF: Forward vehicle not approaching | - |
| Radar Transmitting | Millimeter wave radar sensor assembly operation signal | ON or OFF | ON: Millimeter wave radar sensor assembly signal sent OFF: Millimeter wave radar sensor assembly signal stopped | - |
| Vehicle Information (Conv/HV) | Vehicle Information (Conv/HV) | Unknown, Conv or HV | - | - |
| Vehicle Information (Steering Wheel Position) | Vehicle Information (Steering Wheel Position) | Unknown, Left or Right | - | - |
| Vehicle Information (Brake Type) | Vehicle Information (Brake Type) | Unknown, Other, V series of Except V3H or V3H | - | - |
| Accelerator Over Ride | Accelerator pedal position signal during cruising | ON or OFF | ON: Accelerator over ride ON OFF: Accelerator over ride OFF | - |
| Front Radar Sensor High Temperature | Millimeter wave radar sensor assembly high temperature abnormality | Normal or High Temperature | Normal: Millimeter wave radar sensor assembly temperature is normal High Temperature: Millimeter wave radar sensor assembly temperature is high |
|
| Front Radar Sensor Low Voltage | Millimeter wave radar sensor assembly low voltage abnormality | Normal or Low Voltage | Normal: Millimeter wave radar sensor assembly voltage is normal Low Voltage: Millimeter wave radar sensor assembly voltage is low |
|
| Radar Cruise Control System Malfunction | Dynamic radar cruise control system warning indication | Normal or Abnormal | Normal: Dynamic radar cruise control system warning indication (Malfunction not detected) Abnormal: Dynamic radar cruise control system warning indication (Malfunction detected) | - |
ACTIVE TEST
(a) Connect the Techstream to the DLC3.
(b) Turn the power switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Powertrain / Radar Cruise2 / Active Test.
(e) Perform the Active Test according to the display on the Techstream.
Powertrain > Radar Cruise2 > Active Test| Tester Display | Measurement Item | Control Range | Diagnostic Note |
|---|---|---|---|
| Radar Cruise Proximity Warning Buzzer | Dynamic radar cruise control system approach warning buzzer | Start or Stop | Test possible at vehicle speed of 0 km/h (0 mph) |
| Radar Cruise Stop Keeping Announce Buzzer | Dynamic radar cruise control system brake hold operation buzzer | Start or Stop | Test possible at vehicle speed of 0 km/h (0 mph) |
(f) Enter the following menus: Body Electrical / Combination Meter / Active Test.
(g) Perform the Active Test according to the display on the Techstream.
Body Electrical > Combination Meter > Active Test| Tester Display | Measurement Item | Control Range | Diagnostic Note |
|---|---|---|---|
| Meter Display 1 | Multi-information display | OFF, All | - |
READ NEXT:
Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART Dynamic Radar Cruise Control System DTC No. Detection Item DTC Output from Link P0571 Stop Light Switch Circuit Hybrid vehicle control ECU P0575
Vehicle Control History
VEHICLE CONTROL HISTORY NOTICE: Make sure to record any output Vehicle Control History codes before clearing them and checking the Vehicle Control History again. CHECK VEHICLE CONTROL HISTORY (DYNAMIC
Stop Light Switch Circuit (P0571)
DESCRIPTION When the brakes are applied by the dynamic radar cruise control system, the skid control ECU (brake booster with master cylinder assembly) operates the stop light control ECU assembly to i
SEE MORE:
Removal
REMOVAL PROCEDURE 1. REMOVE NO. 3 DECK BOARD SUB-ASSEMBLY Click here 2. REMOVE REAR DECK FLOOR BOX Click here 3. REMOVE DECK FLOOR BOX LH Click here 4. PRECAUTION CAUTION: Be sure to read Precaution thoroughly before servicing. Click here NOTICE: After the power switch is turned off, there m
General maintenance
Listed below are the general maintenance
items that should be performed
at the intervals specified in
the "Warranty and Service Guide"
or "Owner's Manual Supplement".
It is recommended that any problem
you notice should be brought to
the attention of your Lexus dealer
or qualified service
