Lexus NX: Terminals Of Ecu

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