- Millimeter wave radar sensor assembly temperature malfunction
- Millimeter wave radar sensor assembly voltage malfunction
Lexus NX: Diagnosis System
Lexus NX Service Manual / Vehicle Interior / Pre-collision / Pre-collision System / Diagnosis System
DIAGNOSIS SYSTEM
FUNCTION OF WARNING INDICATOR AND MESSAGE
(a) If the pre-collision system is not functioning properly, the driver is warned by the PCS warning light and a warning message displayed on the multi-information display.
| Master Warning Indicator | Warning Message | Detail | DTC/RoB | PCS warning light |
|---|---|---|---|---|
| Illuminated | "Pre-Collision System Malfunction Visit Your Dealer" is displayed | Pre-collision system malfunctioning | Stored | Illuminates |
| Not illuminated | "Pre-Collision System Unavailable" is displayed | Millimeter wave radar sensor assembly misaligned | Stored | Illuminates |
| Not illuminated | "Pre-Collision System Unavailable" is displayed | | Stored | Illuminates |
| Not illuminated | "Pre-Collision System Unavailable Clean Sensor" is displayed | Foreign matter attached to millimeter wave radar sensor assembly | Stored | Illuminates |
| Not illuminated | "Front Camera Unavailable" is displayed |
| Stored | Illuminates |
| Not illuminated | "Front Camera Unavailable See Owner's Manual" is displayed |
| Stored | Illuminates |
| Not illuminated | "VSC Turned Off Pre-Collision Brake System Unavailable" is displayed | Electronically controlled brake system disabled | Not stored | Illuminates |
| PCS Warning Light | Condition |
|---|---|
| Illuminates |
|
| Not illuminated | Other |
INITIAL CHECK
(a) An initial check is performed when the power switch is off for more than 2 seconds and then turned on (IG). The initial check consists of a pre-collision system diagnostic check with a duration of approximately 3 seconds.
(b) If a malfunction is detected during the initial check, the PCS warning light in the combination meter assembly will illuminate and a warning message indicating the pre-collision system is malfunctioning or disabled will be displayed on the multi-information display.
CONSTANT CHECK
(a) The forward recognition camera constantly monitors the pre-collision system for malfunctions after the power switch is turned on (IG) and the initial check (approximately 3 seconds) has completed.
(b) If a malfunction is detected during the constant check, the PCS warning light in the combination meter assembly will blink and a warning message indicating the pre-collision system is malfunctioning or disabled will be displayed on the multi-information display.
READ NEXT:
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 Techstream on. (d) Enter the following menus: Body Electrical / Pre-Collision System
Freeze Frame Data
FREEZE FRAME DATA DESCRIPTION (a) When a pre-collision system DTC is stored, the forward recognition camera stores the current vehicle (ECU or sensor) state as Freeze Frame Data. CHECK FREEZE FRAME DA
Fail-safe Chart
FAIL-SAFE CHART FAIL-SAFE FUNCTION (a) When a malfunction occurs in the pre-collision system, a message will be displayed on the multi-information display and the pre-collision system will be disabled
SEE MORE:
IG Power Supply Voltage (C1551)
DESCRIPTION The power steering ECU assembly distinguishes the power switch status as on (IG) or off through the IG power source circuit. DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate Return-to-normal Condition Note C1551 IG Power Supply Voltage I
Pointer Displayed/not Displayed Repeatedly
WIRING DIAGRAM CAUTION / NOTICE / HINT NOTICE:
Inspect the fuses for circuits related to this system before performing the following procedure.
When replacing the radio receiver assembly, always replace it with a new one.
If a radio receiver assembly which was installed to another vehicle is u
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