Toyota Tundra Service Manual: Speaker Output Short (B15C3)

Toyota Tundra Service Manual / Audio, Visual, Telematics / Audio / Video / Audio And Visual System / Speaker Output Short (B15C3)

DESCRIPTION

This DTC is stored when a malfunction occurs in the speakers.

DTC Code	DTC Detection Condition	Trouble Area
B15C3	A short is detected in the speaker output circuit.	Speakers Harness or connector Stereo component amplifier assembly Radio and display receiver assembly

WIRING DIAGRAM

PROCEDURE

1.	CHECK FOR DTC

(a) Disconnect the J137 and J138 radio and display receiver assembly connectors.

(b) Clear the DTCs (See page ).

OK:

No DTCs are output.

Result

Result	Proceed to
OK	A
NG (for Column Shift Type)	B
NG (for Floor Shift Type)	C

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY

2.	CHECK VEHICLE CONDITION

(a) Check the vehicle condition.

Result

Result	Proceed to
for 6 Speakers	A
for 7 or 9 Speakers	B

GO TO STEP 7

3.	CHECK HARNESS AND CONNECTOR (SPEAKER CIRCUIT)

*1: for RH Side
*2: for LH Side

(a) Disconnect the J137 and J138 radio and display receiver assembly connectors.

(b) Disconnect the M8*1 and/or N10*2 front No. 1 speaker assembly connector.

(d) Disconnect the O1*1 and/or O7*2 rear No. 1 speaker assembly connector.

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

Standard Resistance:

for RH side

Tester Connection	Condition	Specified Condition
J137-1 (FR+) - J147-3 (TWR+)	Always	Below 1 Ω
J137-5 (FR-) - J147-2 (TWR-)	Always	Below 1 Ω
J147-1 (+) - M8-1	Always	Below 1 Ω
J147-4 (-) - M8-2	Always	Below 1 Ω
J138-1 (RR+) - O1-1	Always	Below 1 Ω
J138-3 (RR-) - O1-2	Always	Below 1 Ω
J137-1 (FR+) - Body ground	Always	10 kΩ or higher
J137-5 (FR-) - Body ground	Always	10 kΩ or higher
J147-1 (+) - Body ground	Always	10 kΩ or higher
J147-4 (-) - Body ground	Always	10 kΩ or higher
J138-1 (RR+) - Body ground	Always	10 kΩ or higher
J138-3 (RR-) - Body ground	Always	10 kΩ or higher

for LH side

Tester Connection	Condition	Specified Condition
J137-2 (FL+) - J149-3 (TWL+)	Always	Below 1 Ω
J137-6 (FL-) - J149-2 (TWL-)	Always	Below 1 Ω
J149-1 (+) - N10-1	Always	Below 1 Ω
J149-4 (-) - N10-2	Always	Below 1 Ω
J138-2 (RL+) - O7-1	Always	Below 1 Ω
J138-6 (RL-) - O7-2	Always	Below 1 Ω
J137-2 (FL+) - Body ground	Always	10 kΩ or higher
J137-6 (FL-) - Body ground	Always	10 kΩ or higher
J149-1 (+) - Body ground	Always	10 kΩ or higher
J149-4 (-) - Body ground	Always	10 kΩ or higher
J138-2 (RL+) - Body ground	Always	10 kΩ or higher
J138-6 (RL-) - Body ground	Always	10 kΩ or higher

REPAIR OR REPLACE HARNESS OR CONNECTOR

4.	INSPECT FRONT NO. 1 SPEAKER ASSEMBLY

(a) Remove the front No. 1 speaker assembly (See page ).

(b) Inspect the front No. 1 speaker assembly (See page ).

REPLACE FRONT NO. 1 SPEAKER ASSEMBLY

5.	CHECK FRONT NO. 2 SPEAKER ASSEMBLY

(a) Replace the front No. 2 speaker assembly with a known good one (See page ).

(b) Check that the malfunction disappears.

NOTICE:

Connect all the connectors to the front No. 2 speaker assemblies that were disconnected.
Connect all the connectors to the front No. 2 speaker assemblies that were disconnected.
Perform the above inspection on both LH and RH sides.

OK:

Malfunction disappears.

END (FRONT NO. 2 SPEAKER ASSEMBLY IS DEFECTIVE)

6.	INSPECT REAR NO. 1 SPEAKER ASSEMBLY

(a) Remove the rear No. 1 speaker assembly (See page ).

(b) Inspect the rear No. 1 speaker assembly (See page ).

Result

Result	Proceed to
OK (for Column Shift Type)	A
OK (for Floor Shift Type)	B
NG	C

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY

REPLACE REAR NO. 1 SPEAKER ASSEMBLY

7.	CHECK HARNESS AND CONNECTOR (SPEAKER CIRCUIT)

*1: for RH Side
*2: for LH Side
*3: for 9 Speakers

(a) Disconnect the J137 and J138 radio and display receiver assembly connectors.

(b) Disconnect the M8*1 and/or N10*2 front No. 1 speaker assembly connector.

(d) Disconnect the J150 front No. 4 speaker assembly connector.

(e) Disconnect the O1*1 and/or O7*2 rear No. 1 speaker assembly connector.

(f) Disconnect the O2*1 and/or O8*2 rear No. 2 speaker assembly connector*3.

(g) Disconnect the J144 and J145 stereo component amplifier assembly connectors.

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

Standard Resistance:

for RH side

Tester Connection	Condition	Specified Condition
J137-1 (FR+) - J145-2 (FR+)	Always	Below 1 Ω
J137-5 (FR-) - J145-7 (FR-)	Always	Below 1 Ω
J137-1 (FR+) - J147-3 (TWR+)	Always	Below 1 Ω
J137-5 (FR-) - J147-2 (TWR-)	Always	Below 1 Ω
J147-1 (+) - J150-1 (+)	Always	Below 1 Ω
J147-4 (-) - J150-4 (RI1-)	Always	Below 1 Ω
J144-1 (R+) - M8-1	Always	Below 1 Ω
J144-5 (R-) - M8-2	Always	Below 1 Ω
J138-1 (RR+) - J145-9 (RR+)	Always	Below 1 Ω
J138-3 (RR-) - J145-10 (RR-)	Always	Below 1 Ω
J138-1 (RR+) - O2-3*	Always	Below 1 Ω
J138-3 (RR-) - O2-2*	Always	Below 1 Ω
J145-4 (WFR+) - O1-1	Always	Below 1 Ω
J145-11 (WFR-) - O1-2	Always	Below 1 Ω
J137-1 (FR+) - Body ground	Always	10 kΩ or higher
J137-5 (FR-) - Body ground	Always	10 kΩ or higher
J147-1 (+) - Body ground	Always	10 kΩ or higher
J147-4 (-) - Body ground	Always	10 kΩ or higher
J144-1 (R+) - Body ground	Always	10 kΩ or higher
J144-5 (R-) - Body ground	Always	10 kΩ or higher
J138-1 (RR+) - Body ground	Always	10 kΩ or higher
J138-3 (RR-) - Body ground	Always	10 kΩ or higher
J145-4 (WFR+) - Body ground	Always	10 kΩ or higher
J145-11 (WFR-) - Body ground	Always	10 kΩ or higher

for LH side

Tester Connection	Condition	Specified Condition
J137-2 (FL+) - J145-1 (FL+)	Always	Below 1 Ω
J137-6 (FL-) - J145-6 (FL-)	Always	Below 1 Ω
J137-2 (FL+) - J149-3 (TWL+)	Always	Below 1 Ω
J137-6 (FL-) - J149-2 (TWL-)	Always	Below 1 Ω
J149-1 (+) - J150-3 (RI1+)	Always	Below 1 Ω
J149-4 (-) - J150-2 (-)	Always	Below 1 Ω
J144-2 (L+) - N10-1	Always	Below 1 Ω
J144-6 (L-) - N10-2	Always	Below 1 Ω
J138-2 (RL+) - J145-3 (RL+)	Always	Below 1 Ω
J138-6 (RL-) - J145-8 (RL-)	Always	Below 1 Ω
J138-2 (RL+) - O8-3*	Always	Below 1 Ω
J138-6 (RL-) - O8-2*	Always	Below 1 Ω
J145-5 (WFL+) - O7-1	Always	Below 1 Ω
J145-12 (WFL-) - O7-2	Always	Below 1 Ω
J137-2 (FL+) - Body ground	Always	10 kΩ or higher
J137-6 (FL-) - Body ground	Always	10 kΩ or higher
J149-1 (+) - Body ground	Always	10 kΩ or higher
J149-4 (-) - Body ground	Always	10 kΩ or higher
J144-2 (L+) - Body ground	Always	10 kΩ or higher
J144-6 (L-) - Body ground	Always	10 kΩ or higher
J138-2 (RL+) - Body ground	Always	10 kΩ or higher
J138-6 (RL-) - Body ground	Always	10 kΩ or higher
J145-5 (WFL+) - Body ground	Always	10 kΩ or higher
J145-12 (WFL-) - Body ground	Always	10 kΩ or higher

*: for 9 Speakers

REPAIR OR REPLACE HARNESS OR CONNECTOR

8.	INSPECT FRONT NO. 1 SPEAKER ASSEMBLY

(a) Remove the front No. 1 speaker assembly.

for Double Cab: See page
for CrewMax: See page

(b) Inspect the front No. 1 speaker assembly.

for Double Cab: See page
for CrewMax: See page

Result

Result	Proceed to
OK	A
NG (for Double Cab)	B
NG (for CrewMax)	C

REPLACE FRONT NO. 1 SPEAKER ASSEMBLY

9.	CHECK FRONT NO. 2 SPEAKER ASSEMBLY

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

for Double Cab: See page
for CrewMax: See page

(b) Check that the malfunction disappears.

NOTICE:

Connect all the connectors to the front No. 2 speaker assemblies that were disconnected.
Connect all the connectors to the front No. 2 speaker assemblies that were disconnected.
Perform the above inspection on both LH and RH sides.

OK:

Malfunction disappears.

END (FRONT NO. 2 SPEAKER ASSEMBLY IS DEFECTIVE)

10.	CHECK FRONT NO. 4 SPEAKER ASSEMBLY

(a) Replace the front No. 4 speaker assembly with a known good one.

for Double Cab: See page
for CrewMax: See page

(b) Check that the malfunction disappears.

OK:

Malfunction disappears.

END (FRONT NO. 4 SPEAKER ASSEMBLY IS DEFECTIVE)

11.	INSPECT FRONT NO. 4 SPEAKER ASSEMBLY

(a) Remove the rear No. 1 speaker assembly.

for Double Cab: See page
for CrewMax: See page

(b) Inspect the rear No. 1 speaker assembly.

for Double Cab: See page
for CrewMax: See page

Result

Result	Proceed to
OK (for CrewMax)	A
OK (for Double Cab)	B
NG (for Double Cab)	C
NG (for CrewMax)	D

GO TO STEP 13

REPLACE REAR NO. 1 SPEAKER ASSEMBLY

12.	CHECK REAR NO. 2 SPEAKER ASSEMBLY

(a) Replace the rear No. 2 speaker assembly with a known good one (See page ).

(b) Check that the malfunction disappears.

NOTICE:

Connect all the connectors to the rear No. 2 speaker assemblies that were disconnected.
Connect all the connectors to the rear No. 2 speaker assemblies that were disconnected.
Perform the above inspection on both LH and RH sides.

OK:

Malfunction disappears.

END (REAR NO. 2 SPEAKER ASSEMBLY IS DEFECTIVE)

13.	CHECK STEREO COMPONENT AMPLIFIER ASSEMBLY

(a) Replace the stereo component amplifier assembly with a known good one (See page ).

(b) Check that the malfunction disappears.

OK:

Malfunction disappears.

Result

Result	Proceed to
OK	A
NG (for Column Shift Type)	B
NG (for Floor Shift Type)	C

END (STEREO COMPONENT AMPLIFIER ASSEMBLY IS DEFECTIVE)

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY

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