Lexus RX (RX 350L, RX450h) 2016-2026 Repair Manual: Terminals Of Ecu
TERMINALS OF ECU
CHECK FORWARD RECOGNITION CAMERA
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NOTICE:
- DTCs may be output when connectors are disconnected during inspection. Therefore, be sure to clear the DTCs using the Techstream once the inspection has been completed.
- Do not apply excessive force to the forward recognition camera connector.
(a) Measure the voltage and resistance according to the value(s) in the table below.
| Terminal No. (Symbol) | Wiring Color | Terminal Description | Condition | Specified Condition |
|---|---|---|---|---|
| U14-3 (LKSW) - U14-10 (GND) | GR - BR | Steering pad switch signal (LTA main switch signal) | Engine switch off LTA main switch off | 1 MΩ or higher |
| Engine switch off LTA main switch on | 228 to 252 Ω | |||
| U14-7 (IGB) - U14-10 (GND) | SB - BR | Power source | Engine switch on (IG) | 11 to 14 V |
| Engine switch off | Below 1 V | |||
| U14-10 (GND) - Body ground | BR - Body ground | Ground | Always | Below 1 Ω |
(b) Check for pulses according to the value(s) in the table below.
HINT:
If the waveform is not similar to that shown in the illustration, a malfunction of a CAN bus line, terminating resistor, or the forward recognition camera is suspected.
| Terminal No. (Symbol) | Wiring Color | Terminal Description | Condition | Specified Condition |
|---|---|---|---|---|
| U14-5 (CA1P) - U14-10 (GND) | V - BR | CAN communication signal | Engine switch on (IG) | Pulse generation (See waveform 1) |
| U14-6 (CANH) - U14-10 (GND) | B - BR | CAN communication signal | Engine switch on (IG) | Pulse generation (See waveform 1) |
| U14-11 (CA1N) - U14-10 (GND) | P - BR | CAN communication signal | Engine switch on (IG) | Pulse generation (See waveform 2) |
| U14-12 (CANL) - U14-10 (GND) | W - BR | CAN communication signal | Engine switch on (IG) | Pulse generation (See waveform 2) |
(1) Waveform 1
| Item | Content |
|---|---|
| Tester Connection |
|
| Tool setting | 1 V/DIV., 10 μs./DIV. |
| Condition | Engine switch on (IG) |
HINT:
The waveform varies depending on the CAN communication signal.
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(2) Waveform 2
| Item | Content |
|---|---|
| Tester Connection |
|
| Tool setting | 1 V/DIV., 10 μs./DIV. |
| Condition | Engine switch on (IG) |
HINT:
The waveform varies depending on the CAN communication signal.
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Problem Symptoms Table
PROBLEM SYMPTOMS TABLE HINT:
If CAN communication system and lane control system DTCs are not output and any of the following problem symptoms exist, perform troubleshooting by checking the appropr ...
Diagnosis System
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Lexus RX (RX 350L, RX450h) 2016-2026 Repair Manual > Front Seat Assembly: Precaution
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The shape of the seat shown in the illustration may differ from the actual seat.
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Lexus RX (RX 350L, RX450h) 2016-2026 Repair Manual > Automatic Transaxle System: Dtc Check / Clear
DTC CHECK / CLEAR NOTICE: When the diagnosis system is changed from normal mode to check mode or vice versa, all DTCs and freeze frame data recorded in normal mode are cleared. Before changing modes, always check and make a note of DTCs and freeze frame data. HINT:
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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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