Lexus RX (RX 350L, RX450h) 2016-2024 Repair Manual: Terminals Of Ecu
TERMINALS OF ECU
| Terminal No. (Symbol) | Wiring Color | Terminal Description | Condition | Specified Condition |
|---|---|---|---|---|
| J157-1 (+B) - J157-20 (E) | Y - W-B | Power source (+B) | Always | 11 to 14 V |
| J157-3 (SIG-) - J157-20 (E) | G - W-B | Ground | Always | Below 1 V |
| J157-4 (IND1) - J157-20 (E) | LG - W-B | Manual (SOS) switch red indicator illumination signal | For 2 seconds after turning the engine switch on (IG) | 1 to 8.5 V |
| Engine switch off | Below 1 V | |||
| J157-5 (MCVD) - J157-20 (E) | L - W-B | Telephone microphone assembly power supply | Engine switch on (ACC) | 4 to 6 V |
| Engine switch off | Below 1 V | |||
| J157-6 (MCI+) - J157-20 (E) | P - W-B | Receive microphone voice signal | Voice being input to telephone microphone assembly | A waveform synchronized with microphone voice signal is input |
| J157-7 (MCI-) - J157-20 (E) | G - W-B | Receive microphone voice signal | Always | Below 1 V |
| J157-13 (GSW) - J157-20 (E) | L - W-B | Collision detection signal | Engine switch on (IG) | Pulse generation (Refer to waveform1) |
| J157-19 (IG2) - J157-20 (E) | B - W-B | Power source (IG) | Engine switch on (IG) | 11 to 14 V |
| Engine switch off | Below 1 V | |||
| J157-20 (E) - Body ground | W-B - Body ground | Ground | Always | Below 1 Ω |
| J157-21 (SIG1) - J157-3 (SIG-) | R - G | Manual (SOS) switch button condition signal | Manual (SOS) switch not pressed | 1.3 to 1.9 V |
| Manual (SOS) switch pressed | 0.5 to 0.8 V | |||
| J157-22 (IND2) - J157-20 (E) | V - W-B | Manual (SOS) switch green indicator illumination signal | For 2 seconds after turning the engine switch on (IG) | 1 to 8.5 V |
| Engine switch off | Below 1 V | |||
| J157-23 (SGND) - J157-20 (E) | Shielded - W-B | Shield ground | Always | Below 1 Ω |
| J157-25 (CANP) | R | CAN communication signal | - | - |
| J157-26 (CANN) | W | CAN communication signal | - | - |
CHECK DCM (TELEMATICS TRANSCEIVER)
(a) Oscilloscope waveform:
(1) Waveform 1
| Item | Condition |
|---|---|
| Tester connection | J157-13 (GSW) - J157-20 (E) |
| Tool setting | 5.0 V/DIV., 20 ms/DIV. |
| Vehicle condition | Engine switch on (IG) |
CHECK RADIO RECEIVER ASSEMBLY
w/o Navigation System: Click here .gif)
w/ Navigation System: Click here
Diagnosis System
DIAGNOSIS SYSTEM DESCRIPTION (a) The DCM (telematics transceiver) control the vehicle safety connect system functions. Safety connect system data and Diagnostic Trouble Codes (DTCs) can be read throug ...
Dtc Check / Clear
DTC CHECK / CLEAR CHECK DTC (a) Connect the Techstream to the DLC3. (b) Turn the engine switch on (IG). (c) Turn the Techstream on. (d) Enter the following menus: Body Electrical / Telematics / Troubl ...
Other materials:
Lexus RX (RX 350L, RX450h) 2016-2024 Repair Manual > Navigation System: Sound of Portable Player cannot be Heard from Speakers or Sound is Low
PROCEDURE 1. CHECK PORTABLE PLAYER SETTINGS (a) Check the portable player settings. (1) Check that the volume is not set to "0". (2) Check that mute is off. (b) Check that the sound of the portable player can be heard from the speakers. OK: Sound of the portable player can be heard from th ...
Lexus RX (RX 350L, RX450h) 2016-2024 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-{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
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