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

READ NEXT:

 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

SEE MORE:

 Wireless Transmitter Memory Function does not Operate

DESCRIPTION With the power switch on (IG) and the driver door closed, pressing the manual lock or unlock switch on the multiplex network master switch assembly while holding a seat memory switch (M1, M2 or M3 switch) will register the transmitter recognition code into the seat memory switch that was

 Route cannot be Calculated

PROCEDURE 1. SET DESTINATION (a) Set another destination and check if the system can calculate the route correctly. OK: Route can be correctly calculated. OK NORMAL OPERATION NG PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

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