Speaker Circuit [12/2019 - 10/2022]: Procedure

1. Choose the model to be inspected.

   Result

   Result	Proceed to
   w/o Stereo Component Amplifier Assembly	A
   w/ Stereo Component Amplifier Assembly	B

Result: 

B 

See step  10

Result: 

A 

See step  2

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

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Refer to OPERATION CHECK [12/2019 - 10/2022]

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

   HINT: 

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

   Result

   Not Operating Speaker	Proceed to
   Front No. 1 speaker assembly or front No. 2 speaker assembly (w/o Telematics Transceiver)	A
   Front No. 1 speaker assembly or front No. 2 speaker assembly (w/ Telematics Transceiver)	B
   Rear speaker assembly	C

Result: 

B 

See step  4

Result: 

C 

See step  8

Result: 

A 

See step  3

1. Disconnect the H9 radio and display receiver assembly connector.
2. Disconnect the J1 and J17 front No. 1 speaker assembly connectors.
3. Disconnect the H71 and H73 front 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
   H9-1 (FR+) - H71-4 (TWR+)	Always	Below 1 Ω
   H9-6 (FR-) - H71-2 (TWR-)	Always	Below 1 Ω
   H9-2 (FL+) - H73-4 (TWL+)	Always	Below 1 Ω
   H9-7 (FL-) - H73-2 (TWL-)	Always	Below 1 Ω
   J1-2 - H71-3 (+)	Always	Below 1 Ω
   J1-1 - H71-1 (-)	Always	Below 1 Ω
   J17-2 - H73-3 (+)	Always	Below 1 Ω
   J17-1 - H73-1 (-)	Always	Below 1 Ω
   H9-1 (FR+) or H71-4 (TWR+) - Body ground	Always	10 kΩ or higher
   H9-6 (FR-) or H71-2 (TWR-) - Body ground	Always	10 kΩ or higher
   H9-2 (FL+) or H73-4 (TWL+) - Body ground	Always	10 kΩ or higher
   H9-7 (FL-) or H73-2 (TWL-) - Body ground	Always	10 kΩ or higher
   J1-2 or H71-3 (+) - Body ground	Always	10 kΩ or higher
   J1-1 or H71-1 (-) - Body ground	Always	10 kΩ or higher
   J17-2 or H73-3 (+) - Body ground	Always	10 kΩ or higher
   J17-1 or H73-1 (-) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

OK 

See step  6

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

1. Disconnect the H9 radio and display receiver assembly connector.
2. Disconnect the J1 and J17 front No. 1 speaker assembly connectors.
3. Disconnect the H71 and H73 front No. 2 speaker assembly connectors.
4. Disconnect the H12 DCM (telematics transceiver) connector.
5. Measure the resistance according to the value (s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   H9-1 (FR+) - H12-1 (SPI+)	Always	Below 1 Ω
   H9-6 (FR-) - H12-2 (SPI-)	Always	Below 1 Ω
   H12-3 (SPO+) - H71-4 (TWR+)	Always	Below 1 Ω
   H12-4 (SPO-) - H71-2 (TWR-)	Always	Below 1 Ω
   H9-2 (FL+) - H73-4 (TWL+)	Always	Below 1 Ω
   H9-7 (FL-) - H73-2 (TWL-)	Always	Below 1 Ω
   J1-2 - H71-3 (+)	Always	Below 1 Ω
   J1-1 - H71-1 (-)	Always	Below 1 Ω
   J17-2 - H73-3 (+)	Always	Below 1 Ω
   J17-1 - H73-1 (-)	Always	Below 1 Ω
   H9-1 (FR+) or H12-1 (SPI+) - Body ground	Always	10 kΩ or higher
   H9-6 (FR-) or H12-2 (SPI-) - Body ground	Always	10 kΩ or higher
   H9-2 (FL+) or H73-4 (TWL+) - Body ground	Always	10 kΩ or higher
   H9-7 (FL-) or H73-2 (TWL-) - Body ground	Always	10 kΩ or higher
   H12-3 (SPO+) or H71-4 (TWR+) - Body ground	Always	10 kΩ or higher
   H12-4 (SPO-) or H71-2 (TWR-) - Body ground	Always	10 kΩ or higher
   J1-2 or H71-3 (+) - Body ground	Always	10 kΩ or higher
   J1-1 or H71-1 (-) - Body ground	Always	10 kΩ or higher
   J17-2 or H73-3 (+) - Body ground	Always	10 kΩ or higher
   J17-1 or H73-1 (-) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  5

1. Remove the DCM (telematics transceiver).

   Refer to REMOVAL [12/2019 - 10/2022]

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 [12/2019 - 10/2022] 

Result: 

OK 

See step  6

1. Remove the front No. 1 speaker assembly.

   Refer to REMOVAL [12/2019 - ]

2. Inspect the front No. 1 speaker assembly.

   Refer to INSPECTION [12/2019 - ]

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE FRONT NO. 1 SPEAKER ASSEMBLY. Refer to  REMOVAL [12/2019 - ] 

Result: 

OK 

See step  7

1. Remove the front No. 2 speaker assembly.

   Refer to REMOVAL [12/2019 - ]

2. Inspect the front No. 2 speaker assembly.

   Refer to INSPECTION [12/2019 - ]

   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 [12/2019 - 10/2022] 

1. Disconnect the H9 radio and display receiver assembly connector.
2. Disconnect the K1 and K6 rear speaker assembly connectors.
3. Measure the resistance according to the value (s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   H9-4 (RR+) - K1-1	Always	Below 1 Ω
   H9-9 (RR-) - K1-2	Always	Below 1 Ω
   H9-3 (RL+) - K6-1	Always	Below 1 Ω
   H9-8 (RL-) - K6-2	Always	Below 1 Ω
   H9-4 (RR+) or K1-1 - Body ground	Always	10 kΩ or higher
   H9-9 (RR-) or K1-2 - Body ground	Always	10 kΩ or higher
   H9-3 (RL+) or K6-1 - Body ground	Always	10 kΩ or higher
   H9-8 (RL-) or K6-2 - 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 rear speaker assembly.

   Refer to REMOVAL [12/2019 - ]

2. Inspect the rear speaker assembly.

   Refer to INSPECTION [12/2019 - ]

   Result

   Proceed to
   OK
   NG

Result: 

OK 

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE [12/2019 - 10/2022] 

Result: 

NG 

REPLACE REAR SPEAKER ASSEMBLY. Refer to  REMOVAL [12/2019 - ] 

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

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Refer to OPERATION CHECK [12/2019 - 10/2022]

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

   HINT: 

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

   Result

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

Result: 

B 

See step  14

Result: 

C 

See step  16

Result: 

D 

See step  18

Result: 

E 

See step  20

Result: 

A 

See step  11

1. Disconnect the M37 stereo component amplifier assembly connector.
2. Disconnect the J1 and J17 front No. 1 speaker assembly connectors.
3. Disconnect the H13 and H14 front No. 3 speaker assembly connectors.
4. Measure the resistance according to the value (s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   M37-15 (FR+) - H13-4 (+)	Always	Below 1 Ω
   M37-30 (FR-) - H13-2 (-)	Always	Below 1 Ω
   M37-11 (FL+) - H14-4 (+)	Always	Below 1 Ω
   M37-26 (FL-) - H14-2 (-)	Always	Below 1 Ω
   J1-2 - H13-3 (+)	Always	Below 1 Ω
   J1-1 - H13-1 (-)	Always	Below 1 Ω
   J17-2 - H14-3 (+)	Always	Below 1 Ω
   J17-1 - H14-1 (-)	Always	Below 1 Ω
   M37-15 (FR+) or H13-4 (+) - Body ground	Always	10 kΩ or higher
   M37-30 (FR-) or H13-2 (-) - Body ground	Always	10 kΩ or higher
   M37-11 (FL+) or H14-4 (+) - Body ground	Always	10 kΩ or higher
   M37-26 (FL-) or H14-2 (-) - Body ground	Always	10 kΩ or higher
   J1-2 or H13-3 (+) - Body ground	Always	10 kΩ or higher
   J1-1 or H13-1 (-) - Body ground	Always	10 kΩ or higher
   J17-2 or H14-3 (+) - Body ground	Always	10 kΩ or higher
   J17-1 or H14-1 (-) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  12

1. Remove the front No. 1 speaker assembly.

   Refer to REMOVAL [12/2019 - ]

2. Inspect the front No. 1 speaker assembly.

   Refer to INSPECTION [12/2019 - ]

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE FRONT NO. 1 SPEAKER ASSEMBLY. Refer to  REMOVAL [12/2019 - ] 

Result: 

OK 

See step  13

1. Remove the front No. 3 speaker assembly.

   Refer to REMOVAL [12/2019 - ]

2. Inspect the front No. 3 speaker assembly.

   Refer to INSPECTION [12/2019 - ]

   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 [12/2019 - 10/2022] 

1. Disconnect the M37 stereo component amplifier assembly connector.
2. Disconnect the H72 and H74 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
   M37-14 (TWR+) - H72-2 (TWR+)	Always	Below 1 Ω
   M37-29 (TWR-) - H72-1 (TWR-)	Always	Below 1 Ω
   M37-13 (TWL+) - H74-2 (TWL+)	Always	Below 1 Ω
   M37-28 (TWL-) - H74-1 (TWL-)	Always	Below 1 Ω
   M37-14 (TWR+) or H72-2 (TWR+) - Body ground	Always	10 kΩ or higher
   M37-29 (TWR-) or H72-1 (TWR-) - Body ground	Always	10 kΩ or higher
   M37-13 (TWL+) or H74-2 (TWL+) - Body ground	Always	10 kΩ or higher
   M37-28 (TWL-) or H74-1 (TWL-) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  15

1. Remove the front No. 2 speaker assembly.

   Refer to REMOVAL [12/2019 - ]

2. Inspect the front No. 2 speaker assembly.

   Refer to INSPECTION [12/2019 - ]

   Result

   Proceed to
   OK
   NG

Result: 

OK 

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE [12/2019 - 10/2022] 

Result: 

NG 

REPLACE FRONT NO. 2 SPEAKER ASSEMBLY. Refer to  REMOVAL [12/2019 - ] 

1. Disconnect the M37 stereo component amplifier assembly connector.
2. Disconnect the K1 and K6 rear speaker assembly connectors.
3. Measure the resistance according to the value (s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   M37-12 (RR+) - K1-1	Always	Below 1 Ω
   M37-27 (RR-) - K1-2	Always	Below 1 Ω
   M37-4 (RL+) - K6-1	Always	Below 1 Ω
   M37-19 (RL-) - K6-2	Always	Below 1 Ω
   M37-12 (RR+) or K1-1 - Body ground	Always	10 kΩ or higher
   M37-27 (RR-) or K1-2 - Body ground	Always	10 kΩ or higher
   M37-4 (RL+) or K6-1 - Body ground	Always	10 kΩ or higher
   M37-19 (RL-) or K6-2 - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  17

1. Remove the rear speaker assembly.

   Refer to REMOVAL [12/2019 - ]

2. Inspect the rear speaker assembly.

   Refer to INSPECTION [12/2019 - ]

   Result

   Proceed to
   OK
   NG

Result: 

OK 

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE [12/2019 - 10/2022] 

Result: 

NG 

REPLACE REAR SPEAKER ASSEMBLY. Refer to  REMOVAL [12/2019 - ] 

1. Disconnect the M37 stereo component amplifier assembly connector.
2. Disconnect the M36 rear No. 2 speaker assembly connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   M37-8 (WF1+) - M36-4 (WF1+)	Always	Below 1 Ω
   M37-23 (WF1-) - M36-3 (WF1-)	Always	Below 1 Ω
   M37-7 (WF2+) - M36-2 (WF2+)	Always	Below 1 Ω
   M37-22 (WF2-) - M36-1 (WF2-)	Always	Below 1 Ω
   M37-8 (WF1+) or M36-4 (WF1+) - Body ground	Always	10 kΩ or higher
   M37-23 (WF1-) or M36-3 (WF1-) - Body ground	Always	10 kΩ or higher
   M37-7 (WF2+) or M36-2 (WF2+) - Body ground	Always	10 kΩ or higher
   M37-22 (WF2-) or M36-1 (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  19

1. Remove the rear No. 2 speaker assembly.

   Refer to REMOVAL [12/2019 - ]

2. Inspect the rear No. 2 speaker assembly.

   Refer to INSPECTION [12/2019 - ]

   Result

   Proceed to
   OK
   NG

Result: 

OK 

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE [12/2019 - 10/2022] 

Result: 

NG 

REPLACE REAR NO. 2 SPEAKER ASSEMBLY. Refer to  REMOVAL [12/2019 - ] 

1. Disconnect the M37 stereo component amplifier assembly connector.
2. Disconnect the W22 and W23 rear No. 3 speaker assembly connectors.
3. Measure the resistance according to the value (s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   M37-9 (SR+) - W22-2	Always	Below 1 Ω
   M37-24 (SR-) - W22-1	Always	Below 1 Ω
   M37-5 (SL+) - W23-2	Always	Below 1 Ω
   M37-20 (SL-) - W23-1	Always	Below 1 Ω
   M37-9 (SR+) or W22-2 - Body ground	Always	10 kΩ or higher
   M37-24 (SR-) or W22-1 - Body ground	Always	10 kΩ or higher
   M37-5 (SL+) or W23-2 - Body ground	Always	10 kΩ or higher
   M37-20 (SL-) or W23-1 - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  21

1. Remove the rear No. 3 speaker assembly.

   Refer to REMOVAL [12/2019 - ]

2. Inspect the rear No. 3 speaker assembly.

   Refer to INSPECTION [12/2019 - ]

   Result

   Proceed to
   OK
   NG

Result: 

OK 

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE [12/2019 - 10/2022] 

Result: 

NG 

REPLACE REAR NO. 3 SPEAKER ASSEMBLY. Refer to  REMOVAL [12/2019 - ]