AUDIO / VIDEO: AUDIO AND VISUAL SYSTEM: B15C371; Speaker Output Short Actuator Stuck; 2025 MY RAV4 RAV4 HV [11/2024

Last Modified: 05-08-2025	6.11:8.1.0	Doc ID: RM100000002Q1G7
Model Year Start: 2025	Model: RAV4	Prod Date Range: [11/2024 - ]
Title: AUDIO / VIDEO: AUDIO AND VISUAL SYSTEM: B15C371; Speaker Output Short Actuator Stuck; 2025 MY RAV4 RAV4 HV [11/2024 - ]

DTC

B15C371

Speaker Output Short Actuator Stuck

DESCRIPTION

This DTC is stored when the stereo component amplifier assembly*1 or radio and display receiver assembly*2 detects a short in a speaker circuit.

*1: for 9 Speakers
*2: for 6 Speakers

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

DTC Output from

Priority

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
Speakers
Radio and display receiver assembly*1
Stereo component amplifier assembly*2
DCM (telematics transceiver

Navigation System

*1: for 6 Speakers
*2: for 9 Speakers

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

Depending on the parts that are replaced during vehicle inspection or maintenance, performing initialization, registration or calibration may be needed. Refer to Precaution for Audio and Visual System.
Click here
When replacing the DCM (telematics transceiver), make sure to replace it with a new one.

PROCEDURE

1.	CHECK MODEL

(a) Choose the model to be inspected.

Result	Proceed to
for 6 Speakers	A
for 9 Speakers	B

GO TO STEP 10

2.	CHECK HARNESS AND CONNECTOR (SPEAKER CIRCUIT)

(a) Disconnect the G4 radio and display receiver assembly connector.

(b) Disconnect the I1 and J1 front No. 1 speaker assembly connectors.

(d) Disconnect the K1 and L1 rear speaker assembly connectors.

(e) Disconnect the G133 DCM (telematics transceiver) connector.*

*: w/ Manual (SOS) Switch

(f) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection	Condition	Specified Condition
1: w/o Manual (SOS) Switch 2: w/ Manual (SOS) Switch
G4-1 (FR+) - G5-4 (TWR+)*1	Always	Below 1 Ω
G4-6 (FR-) - G5-2 (TWR-)*1	Always	Below 1 Ω
G4-1 (FR+) - G133-1 (SPI+)*2	Always	Below 1 Ω
G4-6 (FR-) - G133-2 (SPI-)*2	Always	Below 1 Ω
G133-3 (SPO+) - G5-4 (TWR+)*2	Always	Below 1 Ω
G133-4 (SPO-) - G5-2 (TWR-)*2	Always	Below 1 Ω
G4-2 (FL+) - G6-4 (TWL+)	Always	Below 1 Ω
G4-7 (FL-) - G6-2 (TWL-)	Always	Below 1 Ω
G5-3 (+) - I1-2 (+)	Always	Below 1 Ω
G5-1 (-) - I1-1 (-)	Always	Below 1 Ω
G6-3 (+) - J1-2 (+)	Always	Below 1 Ω
G6-1 (-) - J1-1 (-)	Always	Below 1 Ω
G4-4 (RR+) - K1-2 (+)	Always	Below 1 Ω
G4-9 (RR-) - K1-1 (-)	Always	Below 1 Ω
G4-3 (RL+) - L1-2 (+)	Always	Below 1 Ω
G4-8 (RL-) - L1-1 (-)	Always	Below 1 Ω
G4-1 (FR+) - Body ground	Always	10 kΩ or higher
G4-6 (FR-) - Body ground	Always	10 kΩ or higher
G133-3 (SPO+) - Body ground*2	Always	10 kΩ or higher
G133-4 (SPO-) - Body ground*2	Always	10 kΩ or higher
G4-2 (FL+) - Body ground	Always	10 kΩ or higher
G4-7 (FL-) - Body ground	Always	10 kΩ or higher
G5-3 (+) - Body ground	Always	10 kΩ or higher
G5-1 (-) - Body ground	Always	10 kΩ or higher
G6-3 (+) - Body ground	Always	10 kΩ or higher
G6-1 (-) - Body ground	Always	10 kΩ or higher
G4-4 (RR+) - Body ground	Always	10 kΩ or higher
G4-9 (RR-) - Body ground	Always	10 kΩ or higher
G4-3 (RL+) - Body ground	Always	10 kΩ or higher
G4-8 (RL-) - Body ground	Always	10 kΩ or higher

REPAIR OR REPLACE HARNESS OR CONNECTOR

3.	CHECK MODEL

(a) Choose the model to be inspected.

Result	Proceed to
w/ Manual (SOS) Switch	A
w/o Manual (SOS) Switch	B

GO TO STEP 5

4.	INSPECT DCM (TELEMATICS TRANSCEIVER)

Pre-procedure1

(a) Remove the DCM (telematics transceiver).

HINT:

Click here

Procedure1

(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

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
1 (SPI+) - Body ground	Always	10 kΩ or higher
2 (SPI-) - Body ground	Always	10 kΩ or higher

Result:

Proceed to
OK
NG

*a	Component without harness connected (DCM [Telematics Transceiver])

Post-procedure1

REPLACE DCM (TELEMATICS TRANSCEIVER)

5.	INSPECT FRONT NO. 1 SPEAKER ASSEMBLY

Click here

REPLACE FRONT NO. 1 SPEAKER ASSEMBLY

6.	INSPECT REAR SPEAKER ASSEMBLY

Click here

REPLACE REAR SPEAKER ASSEMBLY

7.	REPLACE FRONT NO. 2 SPEAKER ASSEMBLY

(a) Replace the front No. 2 speaker assembly with a new or known good one.

HINT:

Click here

CLEAR DTC

(a) Clear the DTCs.

Body Electrical > Navigation System > Clear DTCs

9.	CHECK FOR DTC

(a) Recheck for DTCs and check that no DTCs are output.

Body Electrical > Navigation System > Trouble Codes

Result	Proceed to
DTCs are not output	A
DTCs are output	B

END (FRONT NO. 2 SPEAKER ASSEMBLY IS DEFECTIVE)

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY

10.	CHECK HARNESS AND CONNECTOR (SPEAKER CIRCUIT)

(a) Disconnect the M2 stereo component amplifier assembly connector.

(b) Disconnect the I1 and J1 front No. 1 speaker assembly connectors.

(d) Disconnect the G7 and G8 front No. 3 speaker assembly connectors.

(e) Disconnect the K1 and L1 rear speaker assembly connectors.

(f) Disconnect the N1 rear No. 2 speaker assembly connector.

(g) Disconnect the G133 DCM (telematics transceiver) connector.*

*: w/ Manual (SOS) Switch

(h) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection	Condition	Specified Condition
1: w/o Manual (SOS) Switch 2: w/ Manual (SOS) Switch 3: for TMC Made 4: except TMC Made
M2-13 (TWR+) - G7-1 (+)*1	Always	Below 1 Ω
M2-28 (TWR-) - G7-2 (-)*1	Always	Below 1 Ω
M2-13 (TWR+) - G133-1 (SPI+)*2	Always	Below 1 Ω
M2-28 (TWR-) - G133-2 (SPI-)*2	Always	Below 1 Ω
G133-3 (SPO+) - G7-1 (+)*2	Always	Below 1 Ω
G133-4 (SPO-) - G7-2 (-)*2	Always	Below 1 Ω
M2-10 (TWL+) - G8-1 (+)	Always	Below 1 Ω
M2-25 (TWL-) - G8-2 (-)	Always	Below 1 Ω
M2-9 (FR+) - G5-4 (TWR+)	Always	Below 1 Ω
M2-24 (FR-) - G5-2 (TWR-)	Always	Below 1 Ω
G5-3 (+) - I1-2 (+)	Always	Below 1 Ω
G5-1 (-) - I1-1 (-)	Always	Below 1 Ω
M2-14 (FL+) - G6-4 (TWL+)	Always	Below 1 Ω
M2-29 (FL-) - G6-2 (TWL-)	Always	Below 1 Ω
G6-3 (+) - J1-2 (+)	Always	Below 1 Ω
G6-1 (-) - J1-1 (-)	Always	Below 1 Ω
M2-12 (RR+) - K1-2 (+)	Always	Below 1 Ω
M2-27 (RR-) - K1-1 (-)	Always	Below 1 Ω
M2-11 (RL+) - L1-2 (+)	Always	Below 1 Ω
M2-26 (RL-) - L1-1 (-)	Always	Below 1 Ω
M2-15 (WFR+) - N1-4 (MF+)	Always	Below 1 Ω
M2-30 (WFR-) - N1-1 (WF-)*3	Always	Below 1 Ω
M2-30 (WFR-) - N1-3 (WF-)*4	Always	Below 1 Ω
M2-8 (WFL+) - N1-2 (WF+)	Always	Below 1 Ω
M2-23 (WFL-) - N1-3 (WF-)*3	Always	Below 1 Ω
M2-23 (WFL-) - N1-1 (WF-)*4	Always	Below 1 Ω
M2-13 (TWR+) - Body ground	Always	10 kΩ or higher
M2-28 (TWR-) - Body ground	Always	10 kΩ or higher
G133-3 (SPO+) - Body ground*2	Always	10 kΩ or higher
G133-4 (SPO-) - Body ground*2	Always	10 kΩ or higher
M2-10 (TWL+) - Body ground	Always	10 kΩ or higher
M2-25 (TWL-) - Body ground	Always	10 kΩ or higher
M2-9 (FR+) - G5-4 (TWR+)	Always	10 kΩ or higher
M2-24 (FR-) - Body ground	Always	10 kΩ or higher
G5-3 (+) - Body ground	Always	10 kΩ or higher
G5-1 (-) - Body ground	Always	10 kΩ or higher
M2-14 (FL+) - Body ground	Always	10 kΩ or higher
M2-29 (FL-) - Body ground	Always	10 kΩ or higher
G6-3 (+) - Body ground	Always	10 kΩ or higher
G6-1 (-) - Body ground	Always	10 kΩ or higher
M2-12 (RR+) - Body ground	Always	10 kΩ or higher
M2-27 (RR-) - Body ground	Always	10 kΩ or higher
M2-11 (RL+) - Body ground	Always	10 kΩ or higher
M2-26 (RL-) - Body ground	Always	10 kΩ or higher
M2-15 (WFR+) - Body ground	Always	10 kΩ or higher
M2-30 (WFR-) - Body ground	Always	10 kΩ or higher
M2-8 (WFL+) - Body ground	Always	10 kΩ or higher
M2-23 (WFL-) - Body ground	Always	10 kΩ or higher

REPAIR OR REPLACE HARNESS OR CONNECTOR

11.	CHECK MODEL

(a) Choose the model to be inspected.

Result	Proceed to
w/ Manual (SOS) Switch	A
w/o Manual (SOS) Switch	B

GO TO STEP 13

12.	INSPECT DCM (TELEMATICS TRANSCEIVER)

Pre-procedure1

(a) Remove the DCM (telematics transceiver).

HINT:

Click here

Procedure1

(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

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
1 (SPI+) - Body ground	Always	10 kΩ or higher
2 (SPI-) - Body ground	Always	10 kΩ or higher

Result:

Proceed to
OK
NG

*a	Component without harness connected (DCM [Telematics Transceiver])

Post-procedure1

REPLACE DCM (TELEMATICS TRANSCEIVER)

13.	INSPECT FRONT NO. 1 SPEAKER ASSEMBLY

Click here

REPLACE FRONT NO. 1 SPEAKER ASSEMBLY

14.	INSPECT FRONT NO. 3 SPEAKER ASSEMBLY

Click here

REPLACE FRONT NO. 3 SPEAKER ASSEMBLY

15.	INSPECT REAR SPEAKER ASSEMBLY

Click here

REPLACE REAR SPEAKER ASSEMBLY

16.	INSPECT REAR NO. 2 SPEAKER ASSEMBLY

Click here

REPLACE REAR NO. 2 SPEAKER ASSEMBLY

17.	REPLACE FRONT NO. 2 SPEAKER ASSEMBLY

(a) Replace the front No. 2 speaker assembly with a new or known good one.

HINT:

Click here

18.

CLEAR DTC

(a) Clear the DTCs.

Body Electrical > Navigation System > Clear DTCs

19.	CHECK FOR DTC

(a) Recheck for DTCs and check that no DTCs are output.

Body Electrical > Navigation System > Trouble Codes

Result	Proceed to
DTCs are not output	A
DTCs are output	B

END (FRONT NO. 2 SPEAKER ASSEMBLY IS DEFECTIVE)

REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY