Lexus NX: Terminals Of Ecu

TERMINALS OF ECU

NOTICE:

  • Turning the power switch on (IG) with connectors disconnected may cause DTCs to be stored. Make sure to clear the DTCs after inspection has been performed.
  • Do not apply excessive force to the millimeter wave radar sensor assembly connector.

CHECK MILLIMETER WAVE RADAR SENSOR 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

B10-8 (IGB) - B10-1 (SGND)

R - W

Power source

Power switch on (IG)

11 to 14 V

Power switch off

Below 1 V

B10-1 (SGND) - Body ground

W - Body ground

Ground

Always

Below 1 Ω

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 Diagnosis System

DIAGNOSIS SYSTEM DIAGNOSIS FUNCTION (a) If a malfunction is detected in the millimeter wave radar sensor assembly, the millimeter wave radar sensor assembly stores DTCs without directly informing the

 Dtc Check / Clear

DTC CHECK / CLEAR CHECK DTC (a) Connect the Techstream to the DLC3. (b) Turn the power switch on (IG). (c) Turn the Techstream on. (d) Enter the following menus: Body Electrical / Front Radar Sensor /

 Freeze Frame Data

FREEZE FRAME DATA DESCRIPTION (a) Whenever a front radar sensor system DTC is stored, the millimeter wave radar sensor assembly stores the current vehicle state as Freeze Frame Data. CHECK FREEZE FRAM

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 Rear Right Seat Heat Sensor Circuit (B14C2)

DESCRIPTION Power supply to the temperature sensor built into the rear seat cushion heater stops if one of the following occurs: 1) an open or short occurs in the temperature sensor circuit; or 2) the temperature sensor is damaged and its output value does not change. DTC No. Detection Item D

 Parts Location

PARTS LOCATION ILLUSTRATION *1 COOLING FAN RELAY (FAN NO. 1) *2 COOLING FAN ECU *3 COOLING FAN MOTOR *4 CRANKSHAFT POSITION SENSOR *5 ECM *6 NO. 2 ENGINE ROOM RELAY BLOCK - FAN FUSE *7 NO. 2 COOLING FAN MOTOR *8 INSTRUMENT PANEL JUNCTION BLOCK - ECU-IG NO. 4 F

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