Lexus RX (RX 350L, RX450h) 2016-2025 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.
.png)
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
DIAGNOSIS SYSTEM FUNCTION OF INDICATOR AND WARNING MESSAGE (a) If the lane control system is not functioning properly, the driver is warned through the LTA indicator and a warning message is displayed ...
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Lexus RX (RX 350L, RX450h) 2016-2025 Owners Manual > Dynamic radar cruise
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when vehicle-to-vehicle distance control mode does not function correctly due
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Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Steering Lock System: Diagnosis System
DIAGNOSIS SYSTEM DESCRIPTION (a) The steering lock ECU (steering lock actuator or upper bracket assembly) stores DTCs when a malfunction occurs in the system. These DTCs can be confirmed by using the Techstream. NOTICE:
When using the Techstream with the engine switch off to confirm DTCs or Data ...
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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