Lexus NX: Terminals Of Ecu
TERMINALS OF ECU
CHECK FORWARD RECOGNITION CAMERA
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.
(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 |
|---|---|---|---|---|
| T18-7 (IGB) - T17-10 (GND) | GR - W-B | Power source | Power switch on (IG) | 11 to 14 V |
| Power switch off | Below 1 V | |||
| T18-3 (LKSW) - T18-10 (GND) | P - W-B | Steering pad switch signal | Power switch off, LTA/LDA main switch off | 1 MΩ or higher |
| Power switch off, LTA/LDA main switch on | 228 to 252 Ω | |||
| T18-10 (GND) - Body ground | W-B - Body ground | Ground | Always | Below 1 Ω |
(b) Check for pulses according to the value(s) in the table below.
| Terminal No. (Symbol) | Wiring Color | Terminal Description | Condition | Specified Condition |
|---|---|---|---|---|
| T18-2 (STRV) - Body ground | B - Body ground | CAN communication signal | Power switch on (IG) | Pulse generation (See waveform 1) |
(1) WAVEFORM 1
| Item | Content |
|---|---|
| Terminal Name | Between T18-2 (STRV) and Body ground |
| Tester Range | 5 V/DIV., 1 ms/DIV. |
| Condition | Power switch ON |
HINT:
The waveform varies depending on the CAN communication signal.
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Installation
INSTALLATION CAUTION / NOTICE / HINT NOTICE:
When the brake pedal is first depressed after replacing the brake pads or pushing back the disc brake piston, DTC C1214 may be output. As there is no malfunction, clear the DTC.
While the auxiliary battery is connected, even if the power switch is of
