Speaker Circuit [06/2018 - 01/2019]: Procedure

1. Choose the model to be inspected.

   Result

   Result	Proceed to
   for 6 Speakers	A
   for 8 Speakers	B

Result: 

B 

See step  9

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 [06/2018 - 03/2019]

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. 2 speaker assembly	A
   Rear speaker assembly	B

   HINT: 

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

Result: 

B 

See step  7

Result: 

A 

See step  3

1. Disconnect the I71 radio and display receiver assembly connector.
2. Disconnect the K1 and L1 front No. 1 speaker assembly connectors.
3. Disconnect the I76 and I77 front No. 2 speaker assembly connectors.
4. Disconnect the I72 DCM (telematics transceiver) connector.
5. Measure the resistance according to the value (s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   I71-1 (FR+) - I72-2 (SPI+)	Always	Below 1 Ω
   I71-6 (FR-) - I72-3 (SPI-)	Always	Below 1 Ω
   I72-5 (SPO+) - I76-4 (TWR+)	Always	Below 1 Ω
   I72-6 (SPO-) - I76-2 (TWR-)	Always	Below 1 Ω
   I71-2 (FL+) - I77-4 (TWL+)	Always	Below 1 Ω
   I71-7 (FL-) - I77-2 (TWL-)	Always	Below 1 Ω
   K1-2 - I76-3 (+)	Always	Below 1 Ω
   K1-1 - I76-1 (-)	Always	Below 1 Ω
   L1-2 - I77-3 (+)	Always	Below 1 Ω
   L1-1 - I77-1 (-)	Always	Below 1 Ω
   I71-1 (FR+) or I72-2 (SPI+) - Body ground	Always	10 kΩ or higher
   I71-6 (FR-) or I72-3 (SPI-) - Body ground	Always	10 kΩ or higher
   I72-5 (SPO+) or I76-4 (TWR+) - Body ground	Always	10 kΩ or higher
   I72-6 (SPO-) or I76-2 (TWR-) - Body ground	Always	10 kΩ or higher
   I71-2 (FL+) or I77-4 (TWL+) - Body ground	Always	10 kΩ or higher
   I71-7 (FL-) or I77-2 (TWL-) - Body ground	Always	10 kΩ or higher
   K1-2 or I76-3 (+) - Body ground	Always	10 kΩ or higher
   K1-1 or I76-1 (-) - Body ground	Always	10 kΩ or higher
   L1-2 or I77-3 (+) - Body ground	Always	10 kΩ or higher
   L1-1 or I77-1 (-) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  4

1. Remove the front No. 1 speaker assembly.

   Refer to REMOVAL [06/2018 - ]

2. Inspect the front No. 1 speaker assembly.

   Refer to INSPECTION [06/2018 - 01/2019]

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE FRONT NO. 1 SPEAKER ASSEMBLY. Refer to  REMOVAL [06/2018 - ] 

Result: 

OK 

See step  5

1. Remove the DCM (telematics transceiver).

   Refer to REMOVAL [06/2018 - 01/2019]

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
   2 (SPI+) - 5 (SPO+)	Always	Below 1 Ω
   3 (SPI-) - 6 (SPO-)	Always	Below 1 Ω
   2 (SPI+) - 3 (SPI-)	Always	10 kΩ or higher
   5 (SPO+) - 6 (SPO-)	Always	10 kΩ or higher
   2 (SPI+) or 5 (SPO+) - Body ground	Always	10 kΩ or higher
   3 (SPI-) or 6 (SPO-) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE DCM (TELEMATICS TRANSCEIVER). Refer to  REMOVAL [06/2018 - 01/2019] 

Result: 

OK 

See step  6

1. Remove the front No. 2 speaker assembly.

   Refer to REMOVAL [06/2018 - 01/2019]

2. Inspect the front No. 2 speaker assembly.

   Refer to INSPECTION [06/2018 - 01/2019]

   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 [06/2018 - 01/2019] 

1. Disconnect the I71 radio and display receiver assembly connector.
2. Disconnect the M4 and N4 rear speaker assembly connectors.
3. Measure the resistance according to the value (s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   I71-4 (RR+) - M4-2	Always	Below 1 Ω
   I71-9 (RR-) - M4-1	Always	Below 1 Ω
   I71-3 (RL+) - N4-2	Always	Below 1 Ω
   I71-8 (RL-) - N4-1	Always	Below 1 Ω
   I71-4 (RR+) or M4-2 - Body ground	Always	10 kΩ or higher
   I71-9 (RR-) or M4-1 - Body ground	Always	10 kΩ or higher
   I71-3 (RL+) or N4-2 - Body ground	Always	10 kΩ or higher
   I71-8 (RL-) or N4-1 - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  8

1. Remove the rear speaker assembly.

   Refer to REMOVAL [06/2018 - ]

2. Inspect the rear speaker assembly.

   Refer to INSPECTION [06/2018 - 01/2019]

   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 [06/2018 - 01/2019] 

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

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Refer to OPERATION CHECK [06/2018 - 03/2019]

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
   Rear speaker assembly	C

   HINT: 

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

Result: 

B 

See step  13

Result: 

C 

See step  16

Result: 

A 

See step  10

1. Disconnect the I54 stereo component amplifier assembly connector.
2. Disconnect the K1 and L1 front No. 1 speaker assembly connectors.
3. Disconnect the I74 and I75 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
   I54-15 (FR+) - I74-4 (+TW)	Always	Below 1 Ω
   I54-30 (FR-) - I74-2 (-TW)	Always	Below 1 Ω
   I54-13 (FL+) - I75-4 (+TW)	Always	Below 1 Ω
   I54-28 (FL-) - I75-2 (-TW)	Always	Below 1 Ω
   K1-2 - I74-3 (+)	Always	Below 1 Ω
   K1-1 - I74-1 (-)	Always	Below 1 Ω
   L1-2 - I75-3 (+)	Always	Below 1 Ω
   L1-1 - I75-1 (-)	Always	Below 1 Ω
   I54-15 (FR+) or I74-4 (+TW) - Body ground	Always	10 kΩ or higher
   I54-30 (FR-) or I74-2 (-TW) - Body ground	Always	10 kΩ or higher
   I54-13 (FL+) or I75-4 (+TW) - Body ground	Always	10 kΩ or higher
   I54-28 (FL-) or I75-2 (-TW) - Body ground	Always	10 kΩ or higher
   K1-2 or I74-3 (+) - Body ground	Always	10 kΩ or higher
   K1-1 or I74-1 (-) - Body ground	Always	10 kΩ or higher
   L1-2 or I75-3 (+) - Body ground	Always	10 kΩ or higher
   L1-1 or I75-1 (-) - 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 front No. 1 speaker assembly.

   Refer to REMOVAL [06/2018 - ]

2. Inspect the front No. 1 speaker assembly.

   Refer to INSPECTION [06/2018 - 01/2019]

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE FRONT NO. 1 SPEAKER ASSEMBLY. Refer to  REMOVAL [06/2018 - ] 

Result: 

OK 

See step  12

1. Remove the front No. 3 speaker assembly.

   Refer to REMOVAL [06/2018 - ]

2. Inspect the front No. 3 speaker assembly.

   Refer to INSPECTION [06/2018 - ]

   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 [06/2018 - 01/2019] 

1. Disconnect the I54 stereo component amplifier assembly connector.
2. Disconnect the I6 and I7 front No. 2 speaker assembly connectors.
3. Disconnect the I72 DCM (telematics transceiver) connector.
4. Measure the resistance according to the value (s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   I54-14 (TWR+) - I72-2 (SPI+)	Always	Below 1 Ω
   I54-29 (TWR-) - I72-3 (SPI-)	Always	Below 1 Ω
   I72-5 (SPO+) - I6-2	Always	Below 1 Ω
   I72-6 (SPO-) - I6-1	Always	Below 1 Ω
   I54-12 (TWL+) - I7-2	Always	Below 1 Ω
   I54-27 (TWL-) - I7-1	Always	Below 1 Ω
   I54-14 (TWR+) or I72-2 (SPI+) - Body ground	Always	10 kΩ or higher
   I54-29 (TWR-) or I72-3 (SPI-) - Body ground	Always	10 kΩ or higher
   I72-5 (SPO+) or I6-2 - Body ground	Always	10 kΩ or higher
   I72-6 (SPO-) or I6-1 - Body ground	Always	10 kΩ or higher
   I54-12 (TWL+) or I7-2 - Body ground	Always	10 kΩ or higher
   I54-27 (TWL-) or I7-1 - 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 front No. 2 speaker assembly.

   Refer to REMOVAL [06/2018 - 01/2019]

2. Inspect the front No. 2 speaker assembly.

   Refer to INSPECTION [06/2018 - 01/2019]

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE FRONT NO. 2 SPEAKER ASSEMBLY. Refer to  REMOVAL [06/2018 - 01/2019] 

Result: 

OK 

See step  15

1. Remove the DCM (telematics transceiver).

   Refer to REMOVAL [06/2018 - 01/2019]

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
   2 (SPI+) - 5 (SPO+)	Always	Below 1 Ω
   3 (SPI-) - 6 (SPO-)	Always	Below 1 Ω
   2 (SPI+) - 3 (SPI-)	Always	10 kΩ or higher
   5 (SPO+) - 6 (SPO-)	Always	10 kΩ or higher
   2 (SPI+) or 5 (SPO+) - Body ground	Always	10 kΩ or higher
   3 (SPI-) or 6 (SPO-) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

OK 

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE [06/2018 - 01/2019] 

Result: 

NG 

REPLACE DCM (TELEMATICS TRANSCEIVER). Refer to  REMOVAL [06/2018 - 01/2019] 

1. Disconnect the I54 stereo component amplifier assembly connector.
2. Disconnect the M4 and N4 rear speaker assembly connectors.
3. Measure the resistance according to the value (s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   I54-11 (RR+) - M4-2	Always	Below 1 Ω
   I54-26 (RR-) - M4-1	Always	Below 1 Ω
   I54-9 (RL+) - N4-2	Always	Below 1 Ω
   I54-24 (RL-) - N4-1	Always	Below 1 Ω
   I54-11 (RR+) or M4-2 - Body ground	Always	10 kΩ or higher
   I54-26 (RR-) or M4-1 - Body ground	Always	10 kΩ or higher
   I54-9 (RL+) or N4-2 - Body ground	Always	10 kΩ or higher
   I54-24 (RL-) or N4-1 - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  17

1. Remove the rear speaker assembly.

   Refer to REMOVAL [06/2018 - ]

2. Inspect the rear speaker assembly.

   Refer to INSPECTION [06/2018 - 01/2019]

   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 [06/2018 - 01/2019]