Lexus NX: Main Switch Circuit
DESCRIPTION
The stereo component equalizer assembly detects vehicle sound switch signals.
The ASC system can be turned on and off by operating the vehicle sound switch.
WIRING DIAGRAM
.png)
CAUTION / NOTICE / HINT
NOTICE:
Inspect the fuses for circuits related to this system before performing the following procedure.
PROCEDURE
| 1. | READ VALUE USING TECHSTREAM |
(a) Using the Techstream, read the Data List.
Click here .gif)
| Tester Display | Measurement Item | Range | Normal Condition | Diagnostic Note |
|---|---|---|---|---|
| Volume SW | Vehicle sound switch on/off status | OFF or ON | OFF: Vehicle sound switch off ON: Vehicle sound switch on | - |
| Volume Switch Voltage | The VSLI terminal voltage to the CPU of the stereo compartment equalizer assembly | Min.: 0 V Max.: 5 V | Changes according to vehicle sound switch volume setting | - |
| Tester Display |
|---|
| Volume SW |
| Volume Switch Voltage |
OK:
The display is as specified in the normal condition column.
| OK | .gif) | PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
|
.gif)
| 2. | INSPECT VEHICLE SOUND SWITCH |
(a) Remove the vehicle sound switch.
Click here
(b) Inspect the vehicle sound switch.
Click here
| NG | | REPLACE VEHICLE SOUND SWITCH |
|
| 3. | CHECK HARNESS AND CONNECTOR (VEHICLE SOUND SWITCH - BATTERY) |
| (a) Disconnect the vehicle sound switch connector. |
|
.png)
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
| Tester Connection | Switch Condition | Specified Condition |
|---|---|---|
| I114-8 (NVS) - Body ground | Power switch on (IG) | 11 to 14 V |
| I114-8 (NVS) - Body ground | Power switch off | Below 1 V |
| NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
| 4. | CHECK HARNESS AND CONNECTOR (VEHICLE SOUND SWITCH - STEREO COMPONENT EQUALIZER ASSEMBLY) |
(a) Disconnect the I114 vehicle sound switch connector.
(b) Disconnect the I117 stereo component equalizer assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| I114-3 (NVI) - I117-5 (VLSW) | Always | Below 1 Ω |
| I114-6 (NVM) - I117-14 (VSLI) | Always | Below 1 Ω |
| I114-3 (NVI) or I117-5 (VLSW) - Body ground | Always | 10 kΩ or higher |
| I114-6 (NVM) or I117-14 (VSLI) - Body ground | Always | 10 kΩ or higher |
| OK | | REPLACE STEREO COMPONENT EQUALIZER ASSEMBLY |
| NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
READ NEXT:
Power Source Circuit
DESCRIPTION This circuit is the power source circuit for the stereo component equalizer assembly. WIRING DIAGRAM CAUTION / NOTICE / HINT NOTICE: Inspect the fuses for circuits related to this system
Precaution
PRECAUTION PRECAUTION FOR DISCONNECTING CABLE FROM NEGATIVE AUXILIARY BATTERY TERMINAL NOTICE: After the power switch is turned off, the radio receiver assembly records various types of memory and set
SEE MORE:
Customize Parameters
CUSTOMIZE PARAMETERS CUSTOMIZE FRONT POWER SEAT CONTROL SYSTEM (w/ Memory) HINT: The following items can be customized. NOTICE:
When the customer requests a change in a function, first make sure that the function can be customized.
Record the current settings before customizing.
(a) Customiz
Disassembly
DISASSEMBLY PROCEDURE 1. REMOVE HEADLIGHT WASHER ACTUATOR SUB-ASSEMBLY RH (w/ Headlight Cleaner System) Click here 2. REMOVE HEADLIGHT WASHER ACTUATOR SUB-ASSEMBLY LH (w/ Headlight Cleaner System) HINT: Use the same procedure described for the RH side. 3. REMOVE HEADLIGHT CLEANER WASHER NOZZLE CO
