Lexus NX: Speaker Circuit (B1360)
DESCRIPTION
This DTC is stored when a connection malfunction, such as an open, is detected in the wire harness between the stereo component equalizer assembly and No. 1 speaker assembly with box.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| B1360 | Speaker Circuit | Open in the speaker circuit |
|
WIRING DIAGRAM
PROCEDURE
| 1. | PERFORM ACTIVE TEST USING TECHSTREAM |
(a) Using the Techstream, perform the Active Test.
Click here .gif)
| Tester Display | Measurement Item | Control Range | Diagnostic Note |
|---|---|---|---|
| Sound | ASC system | ON or OFF | - |
| Tester Display |
|---|
| Sound |
OK:
Sound is output.
| OK | .gif) | REPLACE STEREO COMPONENT EQUALIZER ASSEMBLY |
|
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| 2. | INSPECT NO. 1 SPEAKER ASSEMBLY WITH BOX |
(a) Remove the No. 1 speaker assembly with box.
Click here
(b) Inspect the No. 1 speaker assembly with box.
Click here
| NG | | REPLACE NO. 1 SPEAKER ASSEMBLY WITH BOX |
|
| 3. | CHECK HARNESS AND CONNECTOR (STEREO COMPONENT EQUALIZER ASSEMBLY - NO. 1 SPEAKER ASSEMBLY WITH BOX) |
(a) Disconnect the I117 stereo component equalizer assembly connector.
(b) Disconnect the I118 No. 1 speaker assembly with box connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| I117-16 (SPO+) - I118-1 | Always | Below 1 Ω |
| I117-15 (SPO-) - I118-2 | Always | Below 1 Ω |
| I117-16 (SPO+) or I118-1 - Body ground | Always | 10 kΩ or higher |
| I117-15 (SPO-) or I118-2 - Body ground | Always | 10 kΩ or higher |
| OK | | REPLACE STEREO COMPONENT EQUALIZER ASSEMBLY |
| NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
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Adjustment
ADJUSTMENT PROCEDURE 1. STEERING OFF CENTER ADJUSTMENT HINT: This is the adjustment procedure for when the steering is off-center. (a) Check if the steering wheel is off-center. (1) Apply masking tape to the top center of the steering wheel and upper steering column cover. *1 Steer
Removal
REMOVAL PROCEDURE 1. REMOVE INSTRUMENT SIDE PANEL LH Click here 2. REMOVE NO. 1 INSTRUMENT PANEL SAFETY PAD SUB-ASSEMBLY Click here 3. REMOVE TRIP SWITCH (LIGHT CONTROL RHEOSTAT) (a) Using a screwdriver, detach the 2 claws and remove the trip switch (light control rheostat). HINT: Tape th
