Lexus NX: Terminals Of Ecu
TERMINALS OF ECU
CHECK STEREO COMPONENT EQUALIZER ASSEMBLY
(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 |
|---|---|---|---|---|
| I117-1 (GND) - Body ground | W-B - Body ground | Ground | Always | Below 1 Ω |
| I117-3 (+B) - Body ground | W - Body ground | Power supply | Power switch off | 11 to 14 V |
| I117-4 (CANH) - Body ground | R - Body ground | CAN communication signal | - | - |
| I117-5 (VLSW) - Body ground | G - Body ground | Vehicle sound switch signal | Power switch on (IG), vehicle sound switch on | 11 to 14 V |
| Power switch on (IG), vehicle sound switch off | Below 1 V | |||
| I117-9 (GND1) - Body ground | W-B - Body ground | Ground | Always | Below 1 Ω |
| I117-11 (IG) - Body ground | Y - Body ground | IG power supply | Power switch on (IG) | 11 to 14 V |
| Power switch off | Below 1 V | |||
| I117-12 (CANL) - Body ground | W - Body ground | CAN communication signal | - | - |
| I117-14 (VSLI) - Body ground | B - Body ground | Vehicle sound switch volume signal | Power switch on (IG), vehicle sound switch volume set to maximum | 11 to 14 V |
| Power switch on (IG), vehicle sound switch volume set to minimum | 8.0 to 11.5 V | |||
| I117-16 (SPO+) - I117-15 (SPO-) | B - R | Sound signal | Simulated engine sounds being output | A waveform synchronized with sound is output |
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Dtc Check / Clear
DTC CHECK / CLEAR DTC CHECK USING Techstream (a) Connect the Techstream to the DLC3. (b) Turn the power switch on (IG). (c) Turn the Techstream on. (d) Enter the following menus: Body Electrical / ASC
Freeze Frame Data
FREEZE FRAME DATA FREEZE FRAME DATA (a) Whenever an ASC system DTC is stored, the stereo component equalizer assembly stores the current vehicle state as freeze frame data. CHECK FREEZE FRAME DATA (a)
Fail-safe Chart
FAIL-SAFE CHART ASC System (a) The stereo component equalizer assembly stores DTCs and freeze frame data and stops sound output if it detects any of the following abnormalities. Item Abnormality
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Diagnosis System
DIAGNOSIS SYSTEM DESCRIPTION (a) Automatic high beam system data and Diagnostic Trouble Codes (DTCs) can be read from the Data Link Connector 3 (DLC3) of the vehicle. When the system seems to be malfunctioning, use the Techstream to check for malfunctions and to repair it. CHECK DLC3 (a) Check the D
Side Camera LH Response Malfunction (C2A6B)
DESCRIPTION During self diagnosis of the parking assist ECU, the parking assist ECU sends display mode ID signals to the side television camera assembly LH. This DTC is stored when the output of the side television camera assembly LH does not match the expected output. DTC No. Detection Item
