Lexus NX: Terminals Of Ecu
Lexus NX Service Manual / Engine & Hybrid System / Cruise Control / Front Camera System / 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.
- Do not apply larger loads than necessary since the connector may be damaged.
(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) - Body ground | LA-P - Body ground | Power source | Power switch on (IG) | 11 to 14 V |
| Power switch off | Below 1 V | |||
| T18-1 (HTR) - Body ground | B - Body ground | Forward recognition with heater hood sub-assembly operation signal | Power switch on (IG), forward recognition with heater hood sub-assembly not operating | 11 to 14 V |
| Power switch on (IG), forward recognition with heater hood sub-assembly operating | Below 1 V | |||
| T18-10 (GND) - Body ground | W-B - Body ground | Ground | Always | Below 1 Ω |
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Diagnosis System
DIAGNOSIS SYSTEM DIAGNOSIS FUNCTION (a) The front camera system does not have a notification function such as a warning light when a DTC is detected. When a malfunction occurs, it stores a DTC and sen
Dtc Check / Clear
DTC CHECK / CLEAR CHECK DTC (a) Connect the Techstream to the DLC3. (b) Turn the power switch on (IG). (c) Turn the Techstream on. (d) Enter the following menus: Chassis / Front Recognition Camera / T
Freeze Frame Data
FREEZE FRAME DATA DESCRIPTION (a) When a front camera system DTC is stored, the forward recognition camera stores the current vehicle (ECU or sensor) state as Freeze Frame Data. CHECK FREEZE FRAME DAT
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Voice Recognition Microphone Disconnected (B1579)
DESCRIPTION The radio receiver assembly and telephone microphone assembly are connected to each other using the microphone connection detection signal lines. This DTC is stored when a microphone connection detection signal line is disconnected. DTC No. Detection Item DTC Detection Condition
Fail-safe Chart
FAIL-SAFE CHART MALFUNCTION DETECTION (a) Operation when malfunction is detected Content Operation Heater failure Overcurrent detection of drive element Heater output off Overheating detection of drive element Heater output off Power failure Low-voltage detection Heater ou
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