Lexus RX (RX 350L, RX450h) 2016-2026 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) 2016-2026 Repair Manual > Vacuum Switching Valve (for Engine Mounting): Inspection
INSPECTION PROCEDURE 1. INSPECT NO. 2 VACUUM SWITCHING VALVE ASSEMBLY (a) Measure the resistance. (1) Measure the resistance according to the value(s) in the table below. Standard Resistance: Tester Connection Condition Specified Condition 1 - 2 20°C (68°F) 37 to 44 Ω 1 - B ...
Lexus RX (RX 350L, RX450h) 2016-2026 Repair Manual > Audio And Visual System (for 8 Inch Display): Switch Lights of Remote Touch Always Illuminate or cannot be Controlled Using Rheostat
DESCRIPTION Power is supplied to the remote touch (remote operation controller assembly) illumination when the light control switch is in the tail or head position. HINT:
When the remote touch (remote operation controller assembly) is in self check mode, the switch illumination on the remote touc ...
Lexus RX (RX 350L, RX450h) 2016-{YEAR} Owners Manual
- For your information
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Lexus RX (RX 350L, RX450h) 2016-{YEAR} Repair Manual
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