Lexus NX: Volume Switch Circuit (B1361)
DESCRIPTION
The stereo component equalizer assembly adjusts sound volume based on the signal sent by the vehicle sound switch.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| B1361 | Volume Switch Circuit | Open in the volume switch circuit |
|
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Inspect the fuses for circuits related to this system before performing following procedure.
PROCEDURE
| 1. | READ VALUE USING TECHSTREAM |
(a) Using the Techstream, read the Data List.
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| 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) | REPLACE STEREO COMPONENT EQUALIZER ASSEMBLY |
|
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| 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. |
|
(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 |
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