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 ...
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Lexus RX (RX 350L, RX450h) 2016-2022 Repair Manual > Brake Master Cylinder: Removal
REMOVAL CAUTION / NOTICE / HINT NOTICE: Make sure to release vacuum from the brake booster assembly before removing the brake master cylinder sub-assembly from the brake booster assembly. PROCEDURE 1. DRAIN BRAKE FLUID NOTICE: If brake fluid leaks onto any painted surface, immediately wash it off. 2 ...
Lexus RX (RX 350L, RX450h) 2016-2022 Repair Manual > Steering Column Assembly: Inspection
INSPECTION PROCEDURE 1. INSPECT PRELOAD (a) Secure the steering column assembly in a vise using aluminum plates, cloths and wooden blocks. NOTICE:
Do not overtighten the vise, as the steering column assembly may become deformed.
Support the steering column assembly with wooden blocks or si ...
Lexus RX (RX 350L, RX450h) 2016-{YEAR} Owners Manual
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Lexus RX (RX 350L, RX450h) 2016-{YEAR} Repair Manual
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