Speaker Circuit [08/2020 - ]: Procedure

1. Enter the "System Check Mode" screen. Refer to Check Speaker in Operation Check.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Refer to OPERATION CHECK [08/2020 - ]

2. Perform the operation check above and determine the speaker that is not operating.

   Result

   Not Operating Speaker	Proceed to
   Front No. 1 speaker assembly or front No. 3 speaker assembly	A
   Front No. 2 speaker assembly	B
   Front No. 4 speaker assembly	C
   Rear speaker assembly or rear No. 2 speaker assembly	D
   Speaker assembly with bracket	E
   Rear No. 3 speaker assembly	F

   HINT: 

   If sound cannot be heard from any speaker, inspect all of them.

Result: 

B 

See step  6

Result: 

C 

See step  8

Result: 

D 

See step  10

Result: 

E 

See step  13

Result: 

F 

See step  15

Result: 

A 

See step  2

1. Disconnect the G10 stereo component amplifier assembly connector.
2. Disconnect the I1 and I15 front No. 1 speaker assembly connectors.
3. Disconnect the G78 and G79 front No. 3 speaker assembly connectors.
4. Disconnect the G123 DCM (telematics transceiver) connector.
5. Measure the resistance according to the value (s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   G10-13 (FR+) - G123-1 (SPI+)	Always	Below 1 Ω
   G10-28 (FR-) - G123-2 (SPI-)	Always	Below 1 Ω
   G123-3 (SPO+) - G78-4 (+TW)	Always	Below 1 Ω
   G123-4 (SPO-) - G78-2 (-TW)	Always	Below 1 Ω
   G10-12 (FL+) - G79-4 (+TW)	Always	Below 1 Ω
   G10-27 (FL-) - G79-2 (-TW)	Always	Below 1 Ω
   I1-2 - G78-3 (+)	Always	Below 1 Ω
   I1-1 - G78-1 (-)	Always	Below 1 Ω
   I15-2 - G79-3 (+)	Always	Below 1 Ω
   I15-1 - G79-1 (-)	Always	Below 1 Ω
   G10-13 (FR+) or G123-1 (SPI+) - Body ground	Always	10 kΩ or higher
   G10-28 (FR-) or G123-2 (SPI-) - Body ground	Always	10 kΩ or higher
   G123-3 (SPO+) or G78-4 (+TW) - Body ground	Always	10 kΩ or higher
   G123-4 (SPO-) or G78-2 (-TW) - Body ground	Always	10 kΩ or higher
   G10-12 (FL+) or G79-4 (+TW) - Body ground	Always	10 kΩ or higher
   G10-27 (FL-) or G79-2 (-TW) - Body ground	Always	10 kΩ or higher
   I1-2 or G78-3 (+) - Body ground	Always	10 kΩ or higher
   I1-1 or G78-1 (-) - Body ground	Always	10 kΩ or higher
   I15-2 or G79-3 (+) - Body ground	Always	10 kΩ or higher
   I15-1 or G79-1 (-) - 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. Remove the front No. 1 speaker assembly.

   Refer to REMOVAL [04/2018 - ]

2. Inspect the front No. 1 speaker assembly.

   Refer to INSPECTION [04/2018 - ]

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE FRONT NO. 1 SPEAKER ASSEMBLY. Refer to  REMOVAL [04/2018 - ] 

Result: 

OK 

See step  4

1. Remove the DCM (telematics transceiver).

   Refer to REMOVAL [08/2020 - ]

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

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

   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+) or 3 (SPO+) - Body ground	Always	10 kΩ or higher
   2 (SPI-) or 4 (SPO-) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE DCM (TELEMATICS TRANSCEIVER). Refer to  REMOVAL [08/2020 - ] 

Result: 

OK 

See step  5

1. Remove the front No. 3 speaker assembly.

   Refer to REMOVAL [04/2018 - ]

2. Inspect the front No. 3 speaker assembly.

   Refer to INSPECTION [04/2018 - ]

   OK

   Malfunction disappears.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

END 

Result: 

NG 

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE [08/2020 - ] 

1. Disconnect the G10 stereo component amplifier assembly connector.
2. Disconnect the G70 and G71 front No. 2 speaker assembly connectors.
3. Measure the resistance according to the value (s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   G10-9 (TWR+) - G70-2	Always	Below 1 Ω
   G10-24 (TWR-) - G70-1	Always	Below 1 Ω
   G10-8 (TWL+) - G71-2	Always	Below 1 Ω
   G10-23 (TWL-) - G71-1	Always	Below 1 Ω
   G10-9 (TWR+) or G70-2 - Body ground	Always	10 kΩ or higher
   G10-24 (TWR-) or G70-1 - Body ground	Always	10 kΩ or higher
   G10-8 (TWL+) or G71-2 - Body ground	Always	10 kΩ or higher
   G10-23 (TWL-) or G71-1 - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  7

1. Remove the front No. 2 speaker assembly.

   Refer to REMOVAL [04/2018 - ]

2. Inspect the front No. 2 speaker assembly.

   Refer to INSPECTION [04/2018 - ]

   Result

   Proceed to
   OK
   NG

Result: 

OK 

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE [08/2020 - ] 

Result: 

NG 

REPLACE FRONT NO. 2 SPEAKER ASSEMBLY. Refer to  REMOVAL [04/2018 - ] 

1. Disconnect the G10 stereo component amplifier assembly connector.
2. Disconnect the G72 front No. 4 speaker assembly connector.
3. Measure the resistance according to the value (s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   G10-7 (CTR+) - G72-2	Always	Below 1 Ω
   G10-22 (CTR-) - G72-1	Always	Below 1 Ω
   G10-7 (CTR+) or G72-2 - Body ground	Always	10 kΩ or higher
   G10-22 (CTR-) or G72-1 - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  9

1. Remove the front No. 4 speaker assembly.

   Refer to REMOVAL [04/2018 - ]

2. Inspect the front No. 4 speaker assembly.

   Refer to INSPECTION [04/2018 - ]

   Result

   Proceed to
   OK
   NG

Result: 

OK 

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE [08/2020 - ] 

Result: 

NG 

REPLACE FRONT NO. 4 SPEAKER ASSEMBLY. Refer to  REMOVAL [04/2018 - ] 

1. Disconnect the G10 stereo component amplifier assembly connector.
2. Disconnect the J11 and J12 rear speaker assembly connectors.
3. Disconnect the J3 and J4 rear No. 2 speaker assembly connectors.
4. Measure the resistance according to the value (s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   G10-15 (RR+) - J3-4 (+TW)	Always	Below 1 Ω
   G10-30 (RR-) - J3-2 (-TW)	Always	Below 1 Ω
   G10-14 (RL+) - J4-4 (+TW)	Always	Below 1 Ω
   G10-29 (RL-) - J4-2 (-TW)	Always	Below 1 Ω
   J11-2 - J3-3 (+)	Always	Below 1 Ω
   J11-1 - J3-1 (-)	Always	Below 1 Ω
   J12-2 - J4-3 (+)	Always	Below 1 Ω
   J12-1 - J4-1 (-)	Always	Below 1 Ω
   G10-15 (RR+) or J3-4 (+TW) - Body ground	Always	10 kΩ or higher
   G10-30 (RR-) or J3-2 (-TW) - Body ground	Always	10 kΩ or higher
   G10-14 (RL+) or J4-4 (+TW) - Body ground	Always	10 kΩ or higher
   G10-29 (RL-) or J4-2 (-TW) - Body ground	Always	10 kΩ or higher
   J11-2 or J3-3 (+) - Body ground	Always	10 kΩ or higher
   J11-1 or J3-1 (-) - Body ground	Always	10 kΩ or higher
   J12-2 or J4-3 (+) - Body ground	Always	10 kΩ or higher
   J12-1 or J4-1 (-) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  11

1. Remove the rear speaker assembly.

   Refer to REMOVAL [04/2018 - ]

2. Inspect the rear speaker assembly.

   Refer to INSPECTION [08/2019 - ]

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE REAR SPEAKER ASSEMBLY. Refer to  REMOVAL [04/2018 - ] 

Result: 

OK 

See step  12

1. Remove the rear No. 2 speaker assembly.

   Refer to REMOVAL [04/2018 - ]

2. Inspect the rear No. 2 speaker assembly.

   Refer to INSPECTION [08/2019 - ]

   OK

   Malfunction disappears.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

END 

Result: 

NG 

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE [08/2020 - ] 

1. Disconnect the G10 stereo component amplifier assembly connector.
2. Disconnect the K2 and K3 speaker assembly with bracket connectors.
3. Measure the resistance according to the value (s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   G10-11 (SR+) - K2-2	Always	Below 1 Ω
   G10-26 (SR-) - K2-1	Always	Below 1 Ω
   G10-10 (SL+) - K3-2	Always	Below 1 Ω
   G10-25 (SL-) - K3-1	Always	Below 1 Ω
   G10-11 (SR+) or K2-2 - Body ground	Always	10 kΩ or higher
   G10-26 (SR-) or K2-1 - Body ground	Always	10 kΩ or higher
   G10-10 (SL+) or K3-2 - Body ground	Always	10 kΩ or higher
   G10-25 (SL-) or K3-1 - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  14

1. Remove the speaker assembly with bracket.

   Refer to REMOVAL [04/2018 - 08/2021] , or refer to REMOVAL [08/2021 - ]

2. Inspect the speaker assembly with bracket.

   Refer to INSPECTION [04/2018 - ]

   Result

   Proceed to
   OK
   NG

Result: 

OK 

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE [08/2020 - ] 

Result: 

NG 

REPLACE SPEAKER ASSEMBLY WITH BRACKET. Refer to  REMOVAL [04/2018 - 08/2021]  , or refer to  REMOVAL [08/2021 - ] 

1. Disconnect the G10 stereo component amplifier assembly connector.
2. Disconnect the K1 rear No. 3 speaker assembly connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   G10-6 (WF1+) - K1-4 (WF1+)	Always	Below 1 Ω
   G10-21 (WF1-) - K1-3 (WF1-)	Always	Below 1 Ω
   G10-5 (WF2+) - K1-2 (WF2+)	Always	Below 1 Ω
   G10-20 (WF2-) - K1-1 (WF2-)	Always	Below 1 Ω
   G10-6 (WF1+) or K1-4 (WF1+) - Body ground	Always	10 kΩ or higher
   G10-21 (WF1-) or K1-3 (WF1-) - Body ground	Always	10 kΩ or higher
   G10-5 (WF2+) or K1-2 (WF2+) - Body ground	Always	10 kΩ or higher
   G10-20 (WF2-) or K1-1 (WF2-) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  16

1. Remove the rear No. 3 speaker assembly.

   Refer to REMOVAL [04/2018 - 08/2021] , or refer to REMOVAL [08/2021 - ]

2. Inspect the rear No. 3 speaker assembly.

   Refer to INSPECTION [04/2018 - ]

   Result

   Proceed to
   OK
   NG

Result: 

OK 

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE [08/2020 - ] 

Result: 

NG 

REPLACE REAR NO. 3 SPEAKER ASSEMBLY. Refer to  REMOVAL [04/2018 - 08/2021]  , or refer to  REMOVAL [08/2021 - ]