Lexus RX (RX 350L, RX450h) 2016-2022 Repair Manual: Terminals Of Ecu

TERMINALS OF ECU

CHECK 4WD ECU ASSEMBLY

(a) Measure the voltage and resistance of the connector.

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

R10-10 (4WDS) - R10-4 (GND)

P - W-B

AWD lock mode switch signal

Engine switch on (IG)

AWD lock mode switch released → pressed and held

11 to 14 V → Below 1 V

R10-6 (CANH) - R10-5 (CANL)

B - W

HIGH-level CAN bus wire - LOW-level CAN bus wire

Cable disconnected from negative (-) battery terminal

54 to 69 Ω

R10-4 (GND) - Body ground

W-B - Body ground

Ground

Always

Below 1 Ω

R10-3 (IG1) - R10-4 (GND)

B - W-B

Power source voltage

Engine switch on (IG)

11 to 14 V

R10-2 (SLC+) - R10-1 (SLC-)

L - B

4WD linear solenoid signal

Shift lever in D, engine idling

Pulse generation (See waveform 1)

If the result is not as specified, the 4WD ECU assembly may have a malfunction.

(b) Using an oscilloscope, check the waveform 1.

Waveform 1 (Reference)

Item

Content

Terminal No. (Symbol)

R10-2 (SLC+) - R10-1 (SLC-)

Tester Range

2 V/DIV., 1 msec./DIV.

Condition

Shift lever in D, engine idling

    Diagnosis System
    DIAGNOSIS SYSTEM DESCRIPTION Dynamic torque control AWD system data and Diagnostic Trouble Codes (DTCs) can be read through the Data Link Connector 3 (DLC3) of the vehicle. When the system seems to be ...

    Dtc Check / Clear
    DTC CHECK / CLEAR CHECK DTC (a) Check for DTCs. (1) Connect the Techstream to the DLC3. (2) Turn the engine switch on (IG). (3) Turn the Techstream on. (4) Read the DTCs following the prompts on the T ...

    Other materials:

    Lexus RX (RX 350L, RX450h) 2016-2022 Repair Manual > Audio And Visual System (for 8 Inch Display): Lost Communication with Haptic Device (B1323-B1326)
    DESCRIPTION These DTCs are stored when communication between the radio receiver assembly and remote touch (remote operation controller assembly), combination meter assembly, headup display (meter mirror sub-assembly)* or clock assembly is not possible. *: w/ Headup Display System DTC No. ...

    Lexus RX (RX 350L, RX450h) 2016-2022 Repair Manual > Smart Access System With Push-button Start (for Start Function): Operation Check
    OPERATION CHECK NOTICE: Make sure that the smart access system with push-button start (for Start Function) has not been canceled before performing this inspection. Click here OPERATION DESCRIPTION (a) Power source state when a door is unlocked via a wireless unlock or entry unlock operation: HINT: ...

    Lexus RX (RX 350L, RX450h) 2016-{YEAR} Owners Manual

    Lexus RX (RX 350L, RX450h) 2016-{YEAR} Repair Manual

    © 2022 Copyright www.lexusrx.net
    0.0184