Lexus NX: Initialization
INITIALIZATION
NOTICE:
Make sure that the front passenger seat is not occupied before performing the operation.
HINT:
Perform zero point calibration and sensitivity check if any of the following conditions occur:- The occupant detection ECU is replaced.
- Accessories (seatback tray and seat cover, etc.) are installed.
- The front passenger seat is removed from the vehicle.
- One of the bolts that is used to install the front passenger seat is removed.
- An occupant classification sensor collision detection DTC is output due to an accident or a collision.
ZERO POINT CALIBRATION AND SENSITIVITY CHECK
(a) Zero point calibration and sensitivity check procedure
HINT:
Make sure that zero point calibration has finished normally, and then perform the sensitivity check.
(1) Check that both of the following conditions are met:
- The vehicle is parked on a level surface.
- No objects are placed on the front passenger seat.
(2) Turn the power switch off.
(3) Techstream to the DLC3.
(4) Turn the power switch on (IG).
(5) Turn the Techstream on.
(6) Enter the following menus: Body Electrical / Occupant Detection / Utility / Zero Point Calibration & Sensitivity Check.
Body Electrical > Occupant Detection > Utility| Tester Display |
|---|
| Zero Point Calibration & Sensitivity Check |
(7) Adjust the seat position according to the table below.
| Adjustment Item | Position |
|---|---|
| Slide Direction | Rearmost position |
| Headrest Height | Lowest position |
| Front Vertical Height | Lowest position |
| Rear Lifter Height | Lowest position |
| Recline Angle | Upright position |
(8) Perform zero point calibration and sensitivity check by following the prompts on the Techstream screen.
OK:
"Zero Point Calibration is complete." and "Sensitivity Check is complete." are displayed.
HINT:
- Refer to the Techstream operator's manual for further details.
- If zero point calibration does not complete, replace the front seat adjuster assembly RH.
- When performing sensitivity check, use a solid metal weight (the check result may not appear properly if a liquid weight is used).
- If sensitivity deviates from the specified range, retighten the bolts of the front passenger seat without deforming the seat rail. After performing this procedure, if sensitivity is not within the specified range, replace the front seat adjuster assembly RH.
READ NEXT:
Problem Symptoms Table
PROBLEM SYMPTOMS TABLE HINT:
Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of
Terminals Of Ecu
TERMINALS OF ECU OCCUPANT DETECTION ECU HINT: Since the occupant detection ECU uses waterproof connectors, the voltage and waveform cannot be inspected directly. Standard voltage and waveforms are in
Diagnosis System
DIAGNOSIS SYSTEM CHECK DLC3 (a) Check the DLC3. Click here FUNCTION OF PASSENGER AIRBAG ON/OFF INDICATOR (a) Initial check (1) Turn the power switch on (IG). (2) The passenger airbag ON/OFF indicat
SEE MORE:
Drive Motor "B" Temperature Sensor Circuit Low (P0A32-666,P0A33-665)
DESCRIPTION Refer to the description for DTC P0A31-668. Click here HINT: The term "drive motor B" indicates the rear motor (MGR). DTC No. Detection Item DTC Detection Condition Trouble Area MIL Warning Indicate P0A32-666 Drive Motor "B" Temperature Sensor Circuit Low Line shor
Internal Control Module Throttle Position Performance (P060E)
MONITOR DESCRIPTION The ECM monitors the signals received from the No. 1 throttle position sensor and stop light switch assembly. As the ECM monitors the STP signal of the stop light switch assembly and the No. 1 throttle position sensor, if these signals do not correlate, this DTC is stored. DTC
