Lexus RX (RX 350L, RX450h) 2016-2026 Repair Manual: Terminals Of Ecu
TERMINALS OF ECU
STEERING WHEEL HEATER CONTROL ASSEMBLY
HINT:
Perform the inspection from the harness side with the connectors connected.
(a) Measure the voltage or resistance according to the value(s) in the table below.
| Terminal No. (Symbol) | Terminal Description | Condition | Specified Condition |
|---|---|---|---|
| A-4 (IG) - Body ground | IG power supply | Engine switch on (IG) | 11 to 14 V |
| A-3 (SW) - Body ground | Steering heater switch (Integration control&panel assembly) input signal | Engine switch on (IG), Steering heater switch (Integration control&panel assembly) pressed and held | 11 to 14 V |
| A-2 (LED) - Body ground | LED output signal | Engine switch on (IG), Heated steering wheel system operating | Below 3 V |
| A-1 (GND) - Body ground | Ground | Always | Below 1 Ω |
| B-5 (SH1) - Body ground | Heater output signal | Engine switch on (IG), Heated steering wheel system operating | 11 to 14 V*1 |
| B-3 (TH1) - Body ground | Thermistor input signal | Engine switch on (IG), Heated steering wheel system operating on at 0 to 40°C (32 to 104°F) | 2.5 to 4.8 V*2 |
| B-2 (TH2) - Body ground | Thermistor ground | Engine switch on (IG), Heated steering wheel system operating | Below 1 V |
| B-1 (SH2) - Body ground | Heater ground | Engine switch on (IG), Heated steering wheel system operating | Below 1 V |
HINT:
- *1: The current to the heater turns ON/OFF depending on the temperature of the thermistor. As a result, it may take several minutes before a voltage value is output.
- *2: When ambient temperature is 0 to 40°C (32 to 104°F).
System Diagram
SYSTEM DIAGRAM SYSTEM DIAGRAM ...
Multiplex Tilt And Telescopic Ecu
ComponentsCOMPONENTS ILLUSTRATION *1 LOWER STEERING COLUMN COVER *2 MULTIPLEX TILT AND TELESCOPIC ECU N*m (kgf*cm, ft.*lbf): Specified torque - - InstallationINSTALLATION PROCE ...
Other materials:
Lexus RX (RX 350L, RX450h) 2016-2026 Repair Manual > Power Tilt And Power Telescopic Steering Column System: Dtc Check / Clear
DTC CHECK / CLEAR CHECK DTC (a) Turn the engine switch off. (b) Connect the Techstream to the DLC3. (c) Turn the engine switch on (IG). (d) Turn the Techstream on. (e) Enter the following menus: Body Electrical / Tilt & Telescopic / Trouble Codes. Body Electrical > Tilt&Telescopic > Tr ...
Lexus RX (RX 350L, RX450h) 2016-2026 Repair Manual > Wiper And Washer System: Precaution
PRECAUTION PRECAUTION FOR DISCONNECTING CABLE FROM NEGATIVE BATTERY TERMINAL NOTICE: When disconnecting the cable from the negative (-) battery terminal, initialize the following systems after the cable is reconnected. System Name See Procedure Lane Control System Pre-collision Sys ...
Lexus RX (RX 350L, RX450h) 2016-{YEAR} Owners Manual
- For your information
- Pictorial index
- For safety and security
- Instrument cluster
- Operation of each component
- Driving
- Lexus Display Audio system
- Interior features
- Maintenance and care
- When trouble arises
- Vehicle specifications
- For owners
Lexus RX (RX 350L, RX450h) 2016-{YEAR} Repair Manual
0.009