Lexus NX: Terminals Of Ecu

TERMINALS OF ECU

CLOCK ASSEMBLY

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

I163-1 (ILL-) - Body ground

G - Body ground

Illumination signal ground

Power switch on (ACC)

Pulse generation

I163-2 (E) - Body ground

W-B - Body ground

Ground

Always

Below 1 Ω

I163-3 (TX-1)

W

Local Bus communication line

-

-

I163-4 (TX+1)

B

Local Bus communication line

-

-

I163-6 (ILL+) - Body ground

B - Body ground

Illumination signal

Headlight dimmer switch in tail or head position

11 to 14 V

I163-7 (ACC) - Body ground

GR - Body ground

ACC power supply

Power switch on (ACC)

11 to 14 V

I163-8 (B) - Body ground

R - Body ground

Battery power supply

Power switch off

11 to 14 V

RADIO RECEIVER ASSEMBLY

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COMBINATION METER ASSEMBLY

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 Combination Meter

 Components

COMPONENTS ILLUSTRATION *A for 8 Inch Display *B for 10.3 Inch Display *1 CENTER INSTRUMENT CLUSTER FINISH PANEL ASSEMBLY *2 CONSOLE ARMREST ASSEMBLY *3 INSTRUMENT CLUSTER FI

 Removal

REMOVAL CAUTION / NOTICE / HINT NOTICE: When replacing the combination meter assembly, make sure to replace it with a new one. PROCEDURE 1. DISABLE AUTOAWAY/RETURN FUNCTION (for Power Tilt and Power T

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 Control Module Communication Bus "A" Off (U0073,U0100,U0101,U0126,U0129,U0142,U0155,U0293)

DESCRIPTION DTC No. Detection Item DTC Detection Condition Trouble Area U0073 Control Module Communication Bus "A" Off Bus off condition is detected. CAN communication system U0100 Lost Communication with ECM / PCM "A" Communication stop occurs between the headlight ECU su

 Diagnosis System

DIAGNOSIS SYSTEM DESCRIPTION (a) Lighting system data and the Diagnostic Trouble Codes (DTCs) can be read from the Data Link Connector 3 (DLC3) of the vehicle. When the system seems to be malfunctioning, use the Techstream to check for malfunctions, and then perform repairs. CHECK DLC3 (a) Check the

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