Lexus RX (RX 350L, RX450h) 2016-2025 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) 2016-2025 Repair Manual > Rear Power Seat Control System(for Third Row): Position Sensor Circuit
DESCRIPTION When a fold seat control ECU receives signals from the fold seat switch assembly or No. 1 fold seat switch assembly, it operates the reclining motor and lifter motor of its corresponding rear No. 2 power seat. When the reclining motor or lifter motor is operating, the position sensor (Ha ...
Lexus RX (RX 350L, RX450h) 2016-2025 Owners Manual > Bluetooth: Bluetooth
■ When using the Bluetooth audio system
In the following situations, the system may not function.
If the portable audio player is turned off
If the portable audio player is not connected
If the portable audio player's battery is low
There may be a delay if a cellular phone con ...
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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