Lexus NX: Problem Symptoms Table
PROBLEM SYMPTOMS TABLE
NOTICE:
When replacing the combination meter assembly, always replace it with a new one. If a combination meter assembly which was installed to another vehicle is used, the information stored in it will not match the information from the vehicle and a DTC may be stored.
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 probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
- Inspect the fuses and relays related to this system before inspecting the suspected areas below.
| Symptom | Suspected Area | Link |
|---|---|---|
| System does not operate at all | Intuitive Parking Assist System (w/ Intelligent Clearance Sonar System) | |
| CAN communication system | | |
| Steering pad switch assembly | | |
| Spiral cable sub-assembly | | |
| Clearance warning ECU assembly | .gif) |
| Symptom | Suspected Area | Link |
|---|---|---|
| Detection function operates when the operating conditions are not met | Hybrid control system | |
| Clearance warning ECU assembly | | |
| Detection function operates when vehicle is not within the required speed range (speedometer not malfunctioning) | Clearance warning ECU assembly | |
| Symptom | Suspected Area | Link |
|---|---|---|
| Intelligent clearance sonar system is normal but buzzer operation is intermittent | Check that the temporary mute or auto mute function is not operating | - |
| Proceed to "No. 1 Clearance Warning Buzzer Circuit" | | |
| Proceed to "No. 2 Clearance Warning Buzzer Circuit" | | |
| Clearance warning ECU assembly | | |
| Combination meter assembly | |
| Symptom | Suspected Area | Link |
|---|---|---|
| While the ICS system is operating, no ICS notifications are displayed on the multi-information display. | CAN communication system | |
| Clearance warning ECU assembly | | |
| Combination meter assembly | | |
| While the ICS system is operating, no ICS notifications are displayed on the headup display.* | CAN communication system | |
| Clearance warning ECU assembly | | |
| Meter mirror sub-assembly | | |
| "Parking Support Brake Malfunction Visit Your Dealer" is displayed | Combination meter assembly | |
| Clearance warning ECU assembly | | |
| "Parking Support Brake Unavailable" is displayed | Check that no foreign matter is attached to the ultrasonic sensors. | - |
| Steering angle neutral point (Intelligent clearance sonar system registration) | | |
| CAN communication system | | |
| Combination meter assembly | | |
| Clearance warning ECU assembly | | |
| ICS does not operate when there is a possibility of a collision (Warning message "Parking Support Brake Unavailable" not displayed) | Check the installation of the ultrasonic sensors (front) | |
| Check the installation of the ultrasonic sensors (rear) | | |
| Adjust the installation of the ultrasonic sensors as necessary. | | |
| Ultrasonic sensors (front) | | |
| Ultrasonic sensors (rear) | | |
| Clearance warning ECU assembly | | |
| ICS control operates when there is no possibility of a collision | Check the installation of the ultrasonic sensors (front) | |
| Check the installation of the ultrasonic sensors (rear) | | |
| Adjust the installation of the ultrasonic sensors as necessary. | | |
| Ultrasonic sensors (front) | | |
| Ultrasonic sensors (rear) | | |
| Clearance warning ECU assembly | | |
| ICS control cannot be turned off (ICS OFF indicator does not illuminate) | CAN communication system | |
| Combination meter assembly (LED): Perform Active Test (Indicat. ICS OFF LCD) | | |
| Steering pad switch assembly | | |
| Spiral cable sub-assembly | | |
| Clearance warning ECU assembly | | |
| ICS OFF indicator blinks | If "Yes" is displayed for the Data List item "BSM Radar Communication Invalid History", the blind spot monitor system may be malfunctioning. | |
| Check that no foreign matter is attached to the ultrasonic sensors. | - | |
| Steering angle neutral point (Intelligent clearance sonar system registration) | | |
| Combination meter assembly | | |
| Clearance warning ECU assembly | |
*: w/ Headup Display
READ NEXT:
Terminals Of Ecu
TERMINALS OF ECU CLEARANCE WARNING ECU ASSEMBLY (a) Disconnect the I20 clearance warning ECU assembly connector. (b) Measure the voltage and resistance on the wire harness side connector according to
Diagnosis System
DIAGNOSIS SYSTEM DESCRIPTION (a) Intelligent clearance sonar system data and Diagnostic Trouble Codes (DTCs) can be read from the Data Link Connector 3 (DLC3) of the vehicle. When the system seems to
Dtc Check / Clear
DTC CHECK / CLEAR CHECK DTC (a) Connect the Techstream to the DLC3. (b) Turn the power switch on (IG). (c) Turn the intelligent clearance sonar system on. (d) Turn the Techstream on. (e) Enter the fol
SEE MORE:
Installation
INSTALLATION CAUTION / NOTICE / HINT NOTICE:
Always use a new grommet and valve core when installing the tire pressure warning valve and transmitter.
Check that the washer and nut are not damaged, and replace them if necessary.
Make sure not to damage the urethane covered backside of the tire
Speaker Circuit
DESCRIPTION If there is a short in a speaker circuit, the stereo component amplifier assembly detects it and stops output to the speakers. As a result, sound cannot be heard from the speakers even if there is no malfunction in the stereo component amplifier assembly, DCM (telematics transceiver)* or
