Lexus NX: Terminals Of Ecu

TERMINALS OF ECU

CHECK FORWARD RECOGNITION CAMERA

NOTICE:

DTCs may be output when connectors are disconnected during inspection. Therefore, be sure to clear the DTCs using the Techstream once the inspection has been completed.

(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

T18-7 (IGB) - T17-10 (GND)

GR - W-B

Power source

Power switch on (IG)

11 to 14 V

Power switch off

Below 1 V

T18-3 (LKSW) - T18-10 (GND)

P - W-B

Steering pad switch signal

Power switch off, LTA/LDA main switch off

1 MΩ or higher

Power switch off, LTA/LDA main switch on

228 to 252 Ω

T18-10 (GND) - Body ground

W-B - Body ground

Ground

Always

Below 1 Ω

(b) Check for pulses according to the value(s) in the table below.

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

T18-2 (STRV) - Body ground

B - Body ground

CAN communication signal

Power switch on (IG)

Pulse generation

(See waveform 1)

(1) WAVEFORM 1

Item

Content

Terminal Name

Between T18-2 (STRV) and Body ground

Tester Range

5 V/DIV., 1 ms/DIV.

Condition

Power switch ON

HINT:

The waveform varies depending on the CAN communication signal.

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