DTC B15C3: Speaker Output Short [10/2022 - 05/2023]: Procedure

1. Clear the DTCs.

   Refer to DTC CHECK / CLEAR [10/2022 - 05/2023]

   Body Electrical > Navigation System > Clear DTCs 

2. Recheck for DTCs and check that no DTCs are output.

   Refer to DTC CHECK / CLEAR [10/2022 - 05/2023]

   Body Electrical > Navigation System > Trouble Codes 

   OK

   No DTCs are output.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [04/2020 - 05/2023] 

Result: 

NG 

See step  2

1. *1: for LH Side

   *2: for RH Side

   *3: for 13 Speakers

1. Disconnect the X49 stereo component amplifier assembly connector.
2. Disconnect the Q5*1 and/or Q6*2 front No. 1 speaker assembly connector.
3. Disconnect the S1*1 and/or R1*2 No. 1 speaker with box assembly connector.
4. Disconnect the X41*1 and/or X40*2 No. 2 speaker with box assembly connector.
5. Disconnect the Q7 front No. 2 speaker assembly connector.
6. Disconnect the X11 No. 3 speaker with box assembly connector.
7. Disconnect the P134 DCM (telematics transceiver) connector.
8. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   FOR LH SIDE
   
   

   Tester Connection	Condition	Specified Condition
   Q5-2 (+) - X49-12 (FL+)	Always	Below 1 Ω
   Q5-1 (-) - X49-27 (FL-)	Always	Below 1 Ω
   Q5-4 (+) - X49-11 (TWL+)*3	Always	Below 1 Ω
   Q5-3 (-) - X49-26 (TWL-)*3	Always	Below 1 Ω
   S1-2 (WF+) - X49-4 (WFL+)	Always	Below 1 Ω
   S1-1 (WF-) - X49-19 (WFL-)	Always	Below 1 Ω
   X41-2 (+) - X49-8 (SL+)	Always	Below 1 Ω
   X41-1 (-) - X49-23 (SL-)	Always	Below 1 Ω
   Q5-2 (+) - Body ground	Always	10 kΩ or higher
   Q5-1 (-) - Body ground	Always	10 kΩ or higher
   Q5-4 (+) - Body ground*3	Always	10 kΩ or higher
   Q5-3 (-) - Body ground*3	Always	10 kΩ or higher
   S1-2 (WF+) - Body ground	Always	10 kΩ or higher
   S1-1 (WF-) - Body ground	Always	10 kΩ or higher
   X41-2 (+) - Body ground	Always	10 kΩ or higher
   X41-1 (-) - Body ground	Always	10 kΩ or higher

   FOR RH SIDE
   
   

   Tester Connection	Condition	Specified Condition
   Q6-2 (+) - P134-3 (SPO+)	Always	Below 1 Ω
   Q6-1 (-) - P134-4 (SPO-)	Always	Below 1 Ω
   Q6-3 (-) - X49-29 (TWR-)*3	Always	Below 1 Ω
   Q6-4 (+) - X49-14 (TWR+)*3	Always	Below 1 Ω
   P134-1 (SPI+) - X49-13 (FR+)	Always	Below 1 Ω
   P134-2 (SPI-) - X49-28 (FR-)	Always	Below 1 Ω
   R1-2 (WF+) - X49-5 (WFR+)	Always	Below 1 Ω
   R1-1 (WF-) - X49-20 (WFR-)	Always	Below 1 Ω
   X40-2 (+) - X49-9 (SR+)	Always	Below 1 Ω
   X40-1 (-) - X49-24 (SR-)	Always	Below 1 Ω
   Q6-2 (+) - Body ground	Always	10 kΩ or higher
   Q6-1 (-) - Body ground	Always	10 kΩ or higher
   Q6-3 (-) - Body ground*3	Always	10 kΩ or higher
   Q6-4 (+) - Body ground*3	Always	10 kΩ or higher
   P134-1 (SPI+) - Body ground	Always	10 kΩ or higher
   P134-2 (SPI-) - Body ground	Always	10 kΩ or higher
   R1-2 (WF+) - Body ground	Always	10 kΩ or higher
   R1-1 (WF-) - Body ground	Always	10 kΩ or higher
   X40-2 (+) - Body ground	Always	10 kΩ or higher
   X40-1 (-) - Body ground	Always	10 kΩ or higher

   FOR CENTER SIDE
   
   

   Tester Connection	Condition	Specified Condition
   Q7-4 (CTR+) - X49-10 (MR+)*3	Always	Below 1 Ω
   Q7-3 (CTR-) - X49-25 (MR-)*3	Always	Below 1 Ω
   Q7-2 (+) - X49-7 (CTR+)	Always	Below 1 Ω
   Q7-1 (-) - X49-22 (CTR-)	Always	Below 1 Ω
   X11-2 (WF1+) - X49-6 (WF1+)	Always	Below 1 Ω
   X11-1 (WF1-) - X49-21 (WF1-)	Always	Below 1 Ω
   Q7-4 (CTR+) - Body ground*3	Always	10 kΩ or higher
   Q7-3 (CTR-) - Body ground*3	Always	10 kΩ or higher
   Q7-2 (+) - Body ground	Always	10 kΩ or higher
   Q7-1 (-) - Body ground	Always	10 kΩ or higher
   X11-2 (WF1+) - Body ground	Always	10 kΩ or higher
   X11-1 (WF1-) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  3

1. Check the vehicle type.

   Result

   Result	Proceed to
   for 12 Speakers	A
   for 13 Speakers	B

Result: 

B 

See step  10

Result: 

A 

See step  4

1. Remove the No. 1 speaker with box assembly.

   Refer to REMOVAL [03/2017 - ]

2. Inspect the No. 1 speaker with box assembly.

   Refer to INSPECTION [03/2017 - 05/2023]

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE NO. 1 SPEAKER WITH BOX ASSEMBLY. Refer to  REMOVAL [03/2017 - ] 

Result: 

OK 

See step  5

1. Remove the No. 3 speaker with box assembly.

   Refer to REMOVAL [03/2017 - ]

2. Inspect the No. 3 speaker with box assembly.

   Refer to INSPECTION [03/2017 - ]

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE NO. 3 SPEAKER WITH BOX ASSEMBLY. Refer to  REMOVAL [03/2017 - ] 

Result: 

OK 

See step  6

1. Remove the front No. 2 speaker assembly.

   Refer to REMOVAL [03/2017 - ]

2. Inspect the front No. 2 speaker assembly.

   Refer to INSPECTION [03/2017 - ]

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE FRONT NO. 2 SPEAKER ASSEMBLY. Refer to  REMOVAL [03/2017 - ] 

Result: 

OK 

See step  7

1. Remove the DCM (telematics transceiver).

   Refer to REMOVAL [04/2020 - 05/2023]

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

2. 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

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE DCM (TELEMATICS TRANSCEIVER). Refer to  REMOVAL [04/2020 - 05/2023] 

Result: 

OK 

See step  8

1. Replace the front No. 1 speaker assembly with a new or known good one.

   Refer to REMOVAL [03/2017 - ]

2. Clear the DTCs.

   Refer to DTC CHECK / CLEAR [10/2022 - 05/2023]

   Body Electrical > Navigation System > Clear DTCs 

3. Recheck for DTCs and check that no DTCs are output.

   Refer to DTC CHECK / CLEAR [10/2022 - 05/2023]

   Body Electrical > Navigation System > Trouble Codes 

   OK

   No DTCs are output.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

END (FRONT NO. 1 SPEAKER ASSEMBLY IS DEFECTIVE) 

Result: 

NG 

See step  9

1. Replace the No. 2 speaker with box assembly with a new or known good one.

   Refer to REMOVAL [03/2017 - 05/2023]

2. Clear the DTCs.

   Refer to DTC CHECK / CLEAR [10/2022 - 05/2023]

   Body Electrical > Navigation System > Clear DTCs 

3. Recheck for DTCs and check that no DTCs are output.

   Refer to DTC CHECK / CLEAR [10/2022 - 05/2023]

   Body Electrical > Navigation System > Trouble Codes 

   OK

   No DTCs are output.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

END (NO. 2 SPEAKER WITH BOX ASSEMBLY IS DEFECTIVE) 

Result: 

NG 

REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY. Refer to  REMOVAL [03/2017 - 05/2023] 

1. Remove the No. 1 speaker with box assembly.

   Refer to REMOVAL [03/2017 - ]

2. Inspect the No. 1 speaker with box assembly.

   Refer to INSPECTION [03/2017 - 05/2023]

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE NO. 1 SPEAKER WITH BOX ASSEMBLY. Refer to  REMOVAL [03/2017 - ] 

Result: 

OK 

See step  11

1. Remove the No. 3 speaker with box assembly.

   Refer to REMOVAL [03/2017 - ]

2. Inspect the No. 3 speaker with box assembly.

   Refer to INSPECTION [03/2017 - ]

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE NO. 3 SPEAKER WITH BOX ASSEMBLY. Refer to  REMOVAL [03/2017 - ] 

Result: 

OK 

See step  12

1. Remove the DCM (telematics transceiver).

   Refer to REMOVAL [04/2020 - 05/2023]

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

2. 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

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE DCM (TELEMATICS TRANSCEIVER). Refer to  REMOVAL [04/2020 - 05/2023] 

Result: 

OK 

See step  13

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

   Refer to REMOVAL [03/2017 - ]

2. Clear the DTCs.

   Refer to DTC CHECK / CLEAR [10/2022 - 05/2023]

   Body Electrical > Navigation System > Clear DTCs 

3. Recheck for DTCs and check that no DTCs are output.

   Refer to DTC CHECK / CLEAR [10/2022 - 05/2023]

   Body Electrical > Navigation System > Trouble Codes 

   OK

   No DTCs are output.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

END (FRONT NO. 2 SPEAKER ASSEMBLY IS DEFECTIVE) 

Result: 

NG 

See step  14

1. Replace the front No. 1 speaker assembly with a new or known good one.

   Refer to REMOVAL [03/2017 - ]

2. Clear the DTCs.

   Refer to DTC CHECK / CLEAR [10/2022 - 05/2023]

   Body Electrical > Navigation System > Clear DTCs 

3. Recheck for DTCs and check that no DTCs are output.

   Refer to DTC CHECK / CLEAR [10/2022 - 05/2023]

   Body Electrical > Navigation System > Trouble Codes 

   OK

   No DTCs are output.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

END (FRONT NO. 1 SPEAKER ASSEMBLY IS DEFECTIVE) 

Result: 

NG 

See step  15

1. Replace the No. 2 speaker with box assembly with a new or known good one.

   Refer to REMOVAL [03/2017 - 05/2023]

2. Clear the DTCs.

   Refer to DTC CHECK / CLEAR [10/2022 - 05/2023]

   Body Electrical > Navigation System > Clear DTCs 

3. Recheck for DTCs and check that no DTCs are output.

   Refer to DTC CHECK / CLEAR [10/2022 - 05/2023]

   Body Electrical > Navigation System > Trouble Codes 

   OK

   No DTCs are output.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

END (NO. 2 SPEAKER WITH BOX ASSEMBLY IS DEFECTIVE) 

Result: 

NG 

REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY. Refer to  REMOVAL [03/2017 - 05/2023]