This DTC is stored when the navigation receiver assembly detects a short in a speaker circuit.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| B15C371 | Speaker Output Short Actuator Stuck | When any of the following conditions is met:
(2 trip detection logic) ·
A short is detected in the speaker output circuit ·
Internal direct current is detected in the AMP power IC |
·
Harness or connector ·
Navigation receiver assembly ·
Telematics transceiver ·
Speaker |
Depending on the parts that are replaced during vehicle inspection or maintenance, performing initialization, registration or calibration may be needed.
Choose the model to be inspected.
| Result | Proceed to |
|---|---|
| for 4 Speakers | A |
| for 6 Speakers | B |
A
B
Disconnect the I188 navigation receiver assembly connector.
Disconnect the L1 front No. 1 speaker assembly LH connector.
Disconnect the N4 and M4 rear speaker assembly connectors.
Disconnect the I149 telematics transceiver connector.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| I188-2 (FL+) or L1-2 - Body ground | Always | 10 kΩ or higher |
| I188-7 (FL-) or L1-1 - Body ground | Always | 10 kΩ or higher |
| I188-1 (FR+) or I149-1 (SPI+) - Body ground | Always | 10 kΩ or higher |
| I188-6 (FR-) or I149-2 (SPI-) - Body ground | Always | 10 kΩ or higher |
| I188-3 (RL+) or N4-2 - Body ground | Always | 10 kΩ or higher |
| I188-8 (RL-) or N4-1 - Body ground | Always | 10 kΩ or higher |
| I188-4 (RR+) or M4-2 - Body ground | Always | 10 kΩ or higher |
| I188-9 (RR-) or M4-1 - Body ground | Always | 10 kΩ or higher |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Disconnect the K1 front No. 1 speaker assembly RH connector.
Disconnect the I149 telematics transceiver connector.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| I149-3 (SPO+) or K1-2 - Body ground | Always | 10 kΩ or higher |
| I149-4 (SPO-) or K1-1 - Body ground | Always | 10 kΩ or higher |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
| Proceed to |
|---|
| OK |
| NG |
OK
NG
| Proceed to |
|---|
| OK |
| NG |
OK
NG
| *a | Component without harness connected
(Telematics Transceiver) |
Disconnect the telematics transceiver connector.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| 1 (SPI+) - 3 (SPO+) | Always | Below 1 Ω |
| 2 (SPI-) - 4 (SPO-) | Always | Below 1 Ω |
| 1 (SPI+) - 2 (SPI-) | Always | 10 kΩ or higher |
| 3 (SPO+) - 4 (SPO-) | Always | 10 kΩ or higher |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Clear the DTCs.
Turn the ignition switch off.
Check for DTCs and proceed to the following step.
| Result | Proceed to |
|---|---|
| DTCs are not output | A |
| DTC B15C371 is output | B |
A
B
Disconnect the I188 navigation receiver assembly connector.
Disconnect the I77 front No. 2 speaker assembly LH connector.
Disconnect the N4 and M4 rear speaker assembly connectors.
Disconnect the I149 telematics transceiver connector.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| I188-2 (FL+) or I77-4 (TWL+) - Body ground | Always | 10 kΩ or higher |
| I188-7 (FL-) or I77-2 (TWL-) - Body ground | Always | 10 kΩ or higher |
| I188-1 (FR+) or I149-1 (SPI+) - Body ground | Always | 10 kΩ or higher |
| I188-6 (FR-) or I149-2 (SPI-) - Body ground | Always | 10 kΩ or higher |
| I188-3 (RL+) or N4-2 - Body ground | Always | 10 kΩ or higher |
| I188-8 (RL-) or N4-1 - Body ground | Always | 10 kΩ or higher |
| I188-4 (RR+) or M4-2 - Body ground | Always | 10 kΩ or higher |
| I188-9 (RR-) or M4-1 - Body ground | Always | 10 kΩ or higher |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Disconnect the I76 front No. 2 speaker assembly RH connector.
Disconnect the I149 telematics transceiver connector.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| I149-3 (SPO+) or I76-4 (TWR+) - Body ground | Always | 10 kΩ or higher |
| I149-4 (SPO-) or I76-2 (TWR-) - Body ground | Always | 10 kΩ or higher |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Disconnect the K1 and L1 front No. 1 speaker assembly connectors.
Disconnect the I76 and I77 front No. 2 speaker assembly connectors.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| L1-2 or I77-3 (+) - Body ground | Always | 10 kΩ or higher |
| L1-1 or I77-1 (-) - Body ground | Always | 10 kΩ or higher |
| K1-2 or I76-3 (+) - Body ground | Always | 10 kΩ or higher |
| K1-1 or I76-1 (-) - Body ground | Always | 10 kΩ or higher |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
| Proceed to |
|---|
| OK |
| NG |
OK
NG
| Proceed to |
|---|
| OK |
| NG |
OK
NG
| *a | Component without harness connected
(Telematics Transceiver) |
Disconnect the telematics transceiver connector.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| 1 (SPI+) - 3 (SPO+) | Always | Below 1 Ω |
| 2 (SPI-) - 4 (SPO-) | Always | Below 1 Ω |
| 1 (SPI+) - 2 (SPI-) | Always | 10 kΩ or higher |
| 3 (SPO+) - 4 (SPO-) | Always | 10 kΩ or higher |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Replace the speaker assembly with a new or known good one.
| Proceed to |
|---|
| NEXT |
NEXT
Clear the DTCs.
Turn the ignition switch off.
Check for DTCs and proceed to the following step.
| Result | Proceed to |
|---|---|
| DTCs are not output | A |
| DTC B15C371 is output | B |
A
B