Lexus NX: Terminals Of Ecu

TERMINALS OF ECU

HEADUP DISPLAY (METER MIRROR SUB-ASSEMBLY)

(a) Measure the voltage and resistance according to the value(s) in the table below.

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

J5-1 (IG) - Body ground

B - Body ground

Power switch signal

Power switch off

Below 1 V

Power switch on (IG)

11 to 14 V

J5-2 (B) - Body ground

G - Body ground

Auxiliary battery

Power switch off

11 to 14 V

J5-4 (ES) - Body ground

W-B - Body ground

Ground

Always

Below 1 Ω

J5-9 (SW1) - Body ground

R - Body ground

Headup display switch signal

Power switch on (IG), headup display switch (HUD) off

4.7 to 5.5 V

Power switch on (IG), headup display switch (HUD) on

0 to 0.6 V

Power switch on (IG), headup display switch (DISP) off

4.7 to 5.5 V

Power switch on (IG), headup display switch (DISP) on

0.8 to 1.6 V

J5-10 (SW2) - Body ground

L - Body ground

Headup display switch signal

Power switch on (IG), headup display switch (contrast up) off

4.7 to 5.5 V

Power switch on (IG), headup display switch (contrast up) on

0.8 to 1.6 V

Power switch on (IG), headup display switch (contrast down) off

4.7 to 5.5 V

Power switch on (IG), headup display switch (contrast down) on

0 to 0.6 V

Power switch on (IG), headup display switch (position up) off

4.7 to 5.5 V

Power switch on (IG), headup display switch (position up) on

3.1 to 4.1 V

Power switch on (IG), headup display switch (position down) off

4.7 to 5.5 V

Power switch on (IG), headup display switch (position down) on

1.8 to 2.7 V

J5-12 (MPX1) - Body ground

Y - Body ground

Radio receiver assembly communication signal

Power switch on (IG)

Pulse generation

J5-13 (MPX2) - Body ground

W - Body ground

Radio receiver assembly communication signal

Power switch on (IG)

Pulse generation

J5-14(CS)

B

Local bus communication line

-

-

J5-15(TX-)

W

Local bus communication line

-

-

J5-16 (E) - Body ground

B - Body ground

Ground (Illumination ground)

Always

Below 1 Ω

READ NEXT:

 Dtc Check / Clear

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SEE MORE:

 LED Headlight LH Circuit Malfunction (B2430,B2431)

DESCRIPTION The illumination of the low beam headlights is controlled by the main body ECU (multiplex network body ECU). When the headlights are turned on, the main body ECU (multiplex network body ECU) receives a signal from the headlight assembly and detects the illumination condition of the low b

 Master Reservoir Level Malfunction (C1202)

DESCRIPTION When a fluid level drop in the brake master cylinder reservoir assembly is detected, a signal is sent to the skid control ECU (brake booster with master cylinder assembly). If a DTC for the fluid level drop is stored, the warning will be canceled and the DTC will be cleared when the flui

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