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	Millimeter wave radar sensor assembly temperature malfunction Millimeter wave radar sensor assembly voltage malfunction	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	Abnormal forward recognition camera voltage Forward recognition camera temperature outside of operational range Other forward recognition camera malfunction	Stored	Illuminates
Not illuminated	"Front Camera Unavailable See Owner's Manual" is displayed	Foreign matter attached to forward recognition camera or area of windshield in front of forward recognition camera Forward recognition camera or area of windshield in front of forward recognition camera is fogged up	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 Illumination Status

PCS Warning Light	Condition
Illuminates	Pre-collision system malfunctioning Pre-collision system temporarily disabled Pre-collision system disabled Electronically controlled brake system disabled
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.

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Inspection

INSPECTION PROCEDURE 1. INSPECT FRONT LUMBAR POWER SEAT SWITCH (a) Measure the resistance according to the value(s) in the table below. Standard Resistance: Tester Connection Switch Condition Specified Condition 3 (H) - 5 (B) Hold switch on Below 1 Ω 1 (R) - 2 (E) 2 (E) -

Touch Pad Sensor Malfunction (B1559)

DESCRIPTION This DTC is stored if the remote operation controller assembly (remote touch) detects a malfunction in itself, such as internal hardware failure or touch pad sensor malfunction. DTC No. Detection Item DTC Detection Condition Trouble Area B1559 Touch Pad Sensor Malfunction

Lexus NX: Diagnosis System

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Dtc Check / Clear

Freeze Frame Data

Fail-safe Chart

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Inspection

Touch Pad Sensor Malfunction (B1559)