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

WIRING DIAGRAM

Dtc B15C3 Speaker Output Short. AUDIO / VIDEO. Land Cruiser URJ200 URJ202 GRJ200 VDJ200

INSPECTION PROCEDURE

HINT:

After the inspection is completed, clear the DTCs.

1.CHECK DTC

Clear the DTC ().

NEXT

2.CHECK DTC

Recheck for DTCs and check if the same DTC is output again ().

OK:
DTC B15C3 is not output.

Go to step 3

USE SIMULATION METHOD TO CHECK ()

3.CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY - SPEAKERS)

*1: for RH Side

*2: for LH Side

*3: for 14 Speakers

*4: for 9 Speakers

Disconnect the F74 stereo component amplifier assembly connector.

Disconnect the I1*1 and/or I10*2 front No. 1 speaker assembly connector.

Disconnect the F7*1 and/or F8*2 front No. 2 speaker assembly connector.

Disconnect the F6 front No. 4 speaker assembly connector.

Disconnect the J15*1 and/or J17*2 rear speaker set connector*4.

Disconnect the J2*1 and/or J9*2 rear No. 3 speaker connector*3.

Disconnect the S8*1 and/or S9*2 rear header speaker assembly connector*3.

Disconnect the L4 No. 1 woofer box speaker connector.*3

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
F74-5 (WFR+) - I1-1*1	Always	Below 1 Ω
F74-20 (WFR-) - I1-2*1	Always	Below 1 Ω
F74-4 (WFL+) - I10-1*2	Always	Below 1 Ω
F74-19 (WFL-) - I10-2*2	Always	Below 1 Ω
F74-13 (FR+) - F7-1 (+)*1	Always	Below 1 Ω
F74-28 (FR-) - F7-3 (-)*1	Always	Below 1 Ω
F74-12 (FL+) - F8-1 (+)*2	Always	Below 1 Ω
F74-27 (FL-) - F8-2 (-)*2	Always	Below 1 Ω
F74-7 (CTR+) - F6-1	Always	Below 1 Ω
F74-22 (CTR-) - F6-2	Always	Below 1 Ω
F74-15 (RR+) - J15-11, 4	Always	Below 1 Ω
F74-30 (RR-) - J15-21, 4	Always	Below 1 Ω
F74-14 (RL+) - J17-12, 4	Always	Below 1 Ω
F74-29 (RL-) - J17-22, 4	Always	Below 1 Ω
F74-15 (R-R+) - J2-1 (+)1, 3	Always	Below 1 Ω
F74-30 (R-R) - J2-3 (-)1, 3	Always	Below 1 Ω
F74-14 (R-L+) - J9-1 (+)2, 3	Always	Below 1 Ω
F74-29 (R-L-) - J9-3 (-)2, 3	Always	Below 1 Ω
F74-11 (SR+) - S8-1 (RRD+)1, 3	Always	Below 1 Ω
F74-26 (SR-) - S8-2 (RRD-)1, 3	Always	Below 1 Ω
F74-10 (SL+) - S9-1 (RLD+)2, 3	Always	Below 1 Ω
F74-25 (SL-) - S9-2 (RLD-)2, 3	Always	Below 1 Ω
F74-6 (WF1+) - L4-1 (WF1+)*3	Always	Below 1 Ω
F74-21 (WF1-) - L4-2 (WF1-)*3	Always	Below 1 Ω
F74-8 (WF2+) - L4-3 (WF2+)*3	Always	Below 1 Ω
F74-23 (WF2-) - L4-4 (WF2-)*3	Always	Below 1 Ω
F74-5 (WFR+) - Body ground	Always	10 kΩ or higher
F74-20 (WFR-) - Body ground	Always	10 kΩ or higher
F74-4 (WFL+) - Body ground	Always	10 kΩ or higher
F74-19 (WFL-) - Body ground	Always	10 kΩ or higher
F74-13 (FR+) - Body ground	Always	10 kΩ or higher
F74-28 (FR-) - Body ground	Always	10 kΩ or higher
F74-12 (FL+) - Body ground	Always	10 kΩ or higher
F74-27 (FL-) - Body ground	Always	10 kΩ or higher
F74-7 (CTR+) - Body ground	Always	10 kΩ or higher
F74-22 (CTR-) - Body ground	Always	10 kΩ or higher
F74-15 (RR+) - Body ground	Always	10 kΩ or higher
F74-30 (RR-) - Body ground	Always	10 kΩ or higher
F74-14 (RL+) - Body ground	Always	10 kΩ or higher
F74-29 (RL-) - Body ground	Always	10 kΩ or higher
F74-15 (R-R+) - Body ground	Always	10 kΩ or higher
F74-30 (R-R) - Body ground	Always	10 kΩ or higher
F74-14 (R-L+) - Body ground	Always	10 kΩ or higher
F74-29 (R-L-) - Body ground	Always	10 kΩ or higher
F74-11 (SR+) - Body ground	Always	10 kΩ or higher
F74-26 (SR-) - Body ground	Always	10 kΩ or higher
F74-10 (SL+)- Body ground	Always	10 kΩ or higher
F74-25 (SL-) - Body ground	Always	10 kΩ or higher
F74-6 (WF1+) - Body ground	Always	10 kΩ or higher
F74-21 (WF1-) - Body ground	Always	10 kΩ or higher
F74-8 (WF2+) - Body ground	Always	10 kΩ or higher
F74-23 (WF2-) - Body ground	Always	10 kΩ or higher

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

4.INSPECT FRONT NO. 1 SPEAKER ASSEMBLY

Dtc B15C3 Speaker Output Short. AUDIO / VIDEO. Land Cruiser URJ200 URJ202 GRJ200 VDJ200

Disconnect the front No. 1 speaker assembly connector.

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

Standard Resistance:
for 14 Speakers
Tester Connection Condition Specified Condition
1 - 2 Always 1.8 to 2.6 Ω
for 9 Speakers
Tester Connection Condition Specified Condition
1 - 2 Always 3 Ω

Result
Result	Proceed to
OK (for 14 Speakers)	A
OK (for 9 Speakers)	B
NG	C

Go to step 7

REPLACE FRONT NO. 1 SPEAKER ASSEMBLY ()

A

5.INSPECT FRONT NO. 2 SPEAKER ASSEMBLY

Disconnect the front No. 2 speaker assembly connector.

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

Standard Resistance:
for RH Side
Tester Connection Condition Specified Condition
1 (+) - 2 (TWR+) Always Below 1 Ω
3 (-) - 4 (TWR-) Always Below 1 Ω
2 (TWR+) - 4 (TWR-) Always 1.5 to 2.5 Ω
for LH Side
Tester Connection Condition Specified Condition
1 (+) - 2 (TWL+) Always Below 1 Ω
3 (-) - 4 (TWL-) Always Below 1 Ω
2 (TWL+) - 4 (TWL-) Always 1.5 to 2.5 Ω

Text in Illustration
*A	for RH Side
*B	for LH Side

REPLACE FRONT NO. 2 SPEAKER ASSEMBLY ()

OK

6.CHECK FRONT NO. 3 SPEAKER ASSEMBLY

Temporarily replace the front No. 3 speaker assembly with a new or normally functioning one ().

Check for DTCs and check if the same DTCs is output ().

OK:
No DTCs are output.

Go to step 9

END (FRONT NO. 3 SPEAKER ASSEMBLY IS DEFECTIVE)

7.CHECK FRONT NO. 2 SPEAKER ASSEMBLY

Temporarily replace the front No. 2 speaker assembly with a new or normally functioning one ().

Check for DTCs and check if the same DTCs is output ().

OK:
No DTCs are output.

Go to step 8

END (FRONT NO. 2 SPEAKER ASSEMBLY IS DEFECTIVE)

8.INSPECT FRONT NO. 3 SPEAKER ASSEMBLY

Disconnect the front No. 3 speaker assembly connector.

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

Standard Resistance:
Tester Connection Condition Specified Condition
1 (-) - 2 (+) Always 4 Ω

REPLACE FRONT NO. 3 SPEAKER ASSEMBLY ()

OK

9.CHECK HARNESS AND CONNECTOR (FRONT NO. 2 SPEAKER - FRONT NO. 3 SPEAKER)

*1: for RH Side

*2: for LH Side

Disconnect the F7*1 and/or F8*2 front No. 2 speaker assembly connector.

Disconnect the F13*1 and/or F14*2 front No. 3 speaker assembly connector.

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

Standard Resistance:

for RH Side
Tester Connection	Condition	Specified Condition
F7-2 (TWR+) - F13-1	Always	Below 1 Ω
F7-4 (TWR-) - F13-2	Always	Below 1 Ω
F7-2 (TWR+) - Body ground	Always	10 kΩ or higher
F7-4 (TWR-) - Body ground	Always	10 kΩ or higher

for LH Side
Tester Connection	Condition	Specified Condition
F8-2 (TWL+) - F14-1	Always	Below 1 Ω
F8-4 (TWL-) - F14-2	Always	Below 1 Ω
F8-2 (TWL+) - Body ground	Always	10 kΩ or higher
F8-4 (TWL-) - Body ground	Always	10 kΩ or higher

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

10.INSPECT FRONT NO. 4 SPEAKER ASSEMBLY

Disconnect the front No. 4 speaker assembly connector.

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

Standard Resistance:
for 14 Speakers
Tester Connection Condition Specified Condition
1 - 2 Always 1.5 to 2.5 Ω
for 9 Speakers
Tester Connection Condition Specified Condition
1 - 2 Always 6 Ω

REPLACE FRONT NO. 4 SPEAKER ASSEMBLY ()

OK

11.INSPECT REAR SPEAKER SET

Disconnect the rear speaker set connector.

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

Standard Resistance:
for 14 Speakers
Tester Connection Condition Specified Condition
1 (WF+) - 2 (WF-) Always 1.5 to 2.3 Ω
for 9 Speakers (for FUJITSU TEN Made)
Tester Connection Condition Specified Condition
1 (WF+) - 2 (WF-) Always 4 Ω
for 9 Speakers (for PIONEER Made)
Tester Connection Condition Specified Condition
1 (WF+) - 2 (WF-) Always 5 Ω

Result
Result	Proceed to
OK (for 14 Speakers)	A
OK (for 9 Speakers)	B
NG	C

REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY ()

REPLACE REAR SPEAKER SET ()

A

12.CHECK HARNESS AND CONNECTOR (REAR NO. 3 SPEAKER - REAR SPEAKER SET)

*1: for RH Side

*2: for LH Side

Disconnect the J2*1 and/or J9*2 front No. 3 speaker assembly connector.

Disconnect the J18*1 and/or J19*2 rear speaker set connector.

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

Standard Resistance:

for RH Side
Tester Connection	Condition	Specified Condition
J2-2 (+) - J18-1 (WF+)	Always	Below 1 Ω
J2-4 (-) - J18-2 (WF-)	Always	Below 1 Ω
J2-2 (+) - Body ground	Always	10 kΩ or higher
J2-4 (-) - Body ground	Always	10 kΩ or higher

for LH Side
Tester Connection	Condition	Specified Condition
J9-2 (+) - J19-1 (WF+)	Always	Below 1 Ω
J9-4 (-) - J19-2 (WF-)	Always	Below 1 Ω
J9-2 (+) - Body ground	Always	10 kΩ or higher
J9-4 (-) - Body ground	Always	10 kΩ or higher

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

13.INSPECT REAR HEADER SPEAKER ASSEMBLY

Disconnect the rear header assembly connector.

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

Standard Resistance:
for RH Side
Tester Connection Condition Specified Condition
1 (RRD+) - 2 (RRD-) Always 1.5 to 2.5 Ω
for LH Side
Tester Connection Condition Specified Condition
1 (RLD+) - 2 (RLD-) Always 1.5 to 2.5 Ω

Text in Illustration
*A	for RH Side
*B	for LH Side

REPLACE REAR HEADER SPEAKER ASSEMBLY ()

OK

14.CHECK REAR NO. 3 SPEAKER ASSEMBLY

Temporarily replace the rear No. 3 speaker assembly with a new or normally functioning one ().

Check for DTCs and check if the same DTCs is output ().

OK:
No DTCs are output.

Go to step 15

END (REAR NO. 3 SPEAKER ASSEMBLY IS DEFECTIVE)

15.INSPECT NO. 1 WOOFER BOX SPEAKER ASSEMBLY

Disconnect the No. 1 woofer box speaker assembly speaker connector.

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

Standard Resistance:
for LH Side
Tester Connection Condition Specified Condition
1 (WF1+) - 2 (WF1-) Always 1.6 to 2.4 Ω
for RH Side
Tester Connection Condition Specified Condition
3 (WF2+) - 4 (WF2-) Always 1.6 to 2.4 Ω

REPLACE NO. 1 WOOFER BOX SPEAKER ASSEMBLY ()

REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY ()

AUDIO / VIDEO

Land Cruiser URJ200 URJ202 GRJ200 VDJ200

AUDIO AND VISUAL SYSTEM w/ Navigation System