Speaker Circuit: Procedure

1. Check the malfunctioning speakers.
   RESULT
   
   

   Result	Proceed to
   Malfunction in front speaker area	A
   Malfunction in rear speaker area	B

B → See step   11 

A: Go to next step 

1. Check the malfunctioning speakers.
   RESULT
   
   

   Result	Proceed to
   Front No. 1 speaker assembly	A
   Front No. 2 speaker assembly	B
   Front No. 3 speaker assembly	C

B → See step   5 

C → See step   9 

A: Go to next step 

1. Disconnect the G8*1 and/or H6*2 front No. 1 speaker assembly connector.
   Fig 1: Measuring Resistance Of Front No. 1 Speaker Assembly

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   • *1: for RH
   • *2: for LH
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   1 - 2	Always	1.65 to 2.15 Ω

   TEXT IN ILLUSTRATION
   
   

   *1	Component without harness connected (Front No. 1 Speaker Assembly)

NG → See step   18 

OK: Go to next step 

1. Disconnect the L3 stereo component amplifier assembly connector.
2. Disconnect the G8*1 and/or H6*2 front No. 1 speaker assembly connector.
   • *1: for RH
   • *2: for LH
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   for RH 

   for LH 

   Tester Connection	Condition	Specified Condition
   L3-2 (WFR+) - G8-1	Always	Below 1 Ω
   L3-6 (WFR-) - G8-2	Always	Below 1 Ω
   L3-2 (WFR+) - Body ground	Always	10 kΩ or higher
   L3-6 (WFR-) - Body ground	Always	10 kΩ or higher

   Tester Connection	Condition	Specified Condition
   L3-1 (WFL+) - H6-1	Always	Below 1 Ω
   L3-5 (WFL-) - H6-2	Always	Below 1 Ω
   L3-1 (WFL+) - Body ground	Always	10 kΩ or higher
   L3-5 (WFL-) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   19 

1. Disconnect the D80*1 and/or D11*2 front No. 2 speaker assembly connector.
   Fig 2: Measuring Resistance Of Front No. 2 Speaker Assembly

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   • *1: for RH
   • *2: for LH
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   1 - 2	Always	1.5 to 2.5 Ω

   TEXT IN ILLUSTRATION
   
   

   *1	Component without harness connected (Front No. 2 Speaker Assembly)

NG → See step   20 

OK: Go to next step 

1. Check the vehicle specifications.
   RESULT
   
   

   Result	Proceed to
   w/ Safety Connect System	A
   w/o Safety Connect System	B

B → See step   8 

A: Go to next step 

1. Disconnect the D73 telematics transceiver connector.
   Fig 3: Checking Telematics Transceiver

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   D73-2 (SPI+) - D73-5 (SPO+)	Always	Below 1 Ω
   D73-3 (SPI-) - D73-6 (SPO-)	Always	Below 1 Ω
   D73-2 (SPI+) - Body ground	Always	10 kΩ or higher
   D73-3 (SPI-) - Body ground	Always	10 kΩ or higher

   TEXT IN ILLUSTRATION
   
   

   *1	Component without harness connected (Telematics Transceiver)

3. Reconnect the telematics transceiver connector.

NG → See step   21 

OK: Go to next step 

1. Disconnect the L4 stereo component amplifier assembly connector.
2. Disconnect the D80*1 and/or D11*2 front No. 2 speaker assembly connector.
   • *1: for RH
   • *2: for LH
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   for RH 

   for LH 

   Tester Connection	Condition	Specified Condition
   L4-10 (FR+) - D80-1	Always	Below 1 Ω
   L4-9 (FR-) - D80-2	Always	Below 1 Ω
   L4-10 (FR+) - Body ground	Always	10 kΩ or higher
   L4-9 (FR-) - Body ground	Always	10 kΩ or higher

   Tester Connection	Condition	Specified Condition
   L4-3 (FL+) - D11-1	Always	Below 1 Ω
   L4-8 (FL-) - D11-2	Always	Below 1 Ω
   L4-3 (FL+) - Body ground	Always	10 kΩ or higher
   L4-8 (FL-) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   22 

1. Disconnect the D48 front No. 3 speaker assembly connector.
   Fig 4: Checking Front No. 3 Speaker Assembly

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   3 - 4	Always	1.5 to 2.5 Ω

   TEXT IN ILLUSTRATION
   
   

   *1	Component without harness connected (Front No. 3 Speaker Assembly)

NG → See step   23 

OK: Go to next step 

1. Disconnect the L3 stereo component amplifier assembly connector.
2. Disconnect the D48 front 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
   L3-3 (CTR+) - D48-3	Always	Below 1 Ω
   L3-9 (CTR-) - D48-4	Always	Below 1 Ω
   L3-3 (CTR+) - Body ground	Always	10 kΩ or higher
   L3-9 (CTR-) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   24 

1. Check the malfunctioning speakers.
   RESULT
   
   

   Result	Proceed to
   Quarter side speaker assembly	A
   Rear No. 2 speaker assembly	B
   Rear No. 3 speaker assembly	C

B → See step   14 

C → See step   16 

A: Go to next step 

1. Disconnect the S2*1 and/or O2*2 quarter side speaker assembly connector.
   Fig 5: Measuring Resistance Of Front No. 2 Speaker Assembly

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   • *1: for RH
   • *2: for LH
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   1 - 2	Always	1.5 to 2.5 Ω

   TEXT IN ILLUSTRATION
   
   

   *1	Component without harness connected (Quarter Side Speaker Assembly)

NG → See step   25 

OK: Go to next step 

1. Disconnect the L4 stereo component amplifier assembly connector.
2. Disconnect the S2*1 and/or O2*2 quarter side speaker assembly connector.
   • *1: for RH
   • *2: for LH
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   for RH 

   for LH 

   Tester Connection	Condition	Specified Condition
   L4-2 (SR+) - S2-1	Always	Below 1 Ω
   L4-7 (SR-) - S2-2	Always	Below 1 Ω
   L4-2 (SR+) - Body ground	Always	10 kΩ or higher
   L4-7 (SR-) - Body ground	Always	10 kΩ or higher

   Tester Connection	Condition	Specified Condition
   L4-1 (SL+) - O2-1	Always	Below 1 Ω
   L4-6 (SL-) - O2-2	Always	Below 1 Ω
   L4-1 (SL+) - Body ground	Always	10 kΩ or higher
   L4-6 (SL-) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   26 

1. Disconnect the I2*1 and/or J2*2 rear No. 2 speaker assembly connector.
   Fig 6: Measuring Resistance Of Front No. 2 Speaker Assembly

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   • *1: for RH
   • *2: for LH
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   1 - 2	Always	1.5 to 2.5 Ω

   TEXT IN ILLUSTRATION
   
   

   *1	Component without harness connected (Rear No. 2 Speaker Assembly)

NG → See step   27 

OK: Go to next step 

1. Disconnect the L4 stereo component amplifier assembly connector.
2. Disconnect the I2*1 and/or J2*2 rear No. 2 speaker assembly connector.
   • *1: for RH
   • *2: for LH
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   for RH 

   for LH 

   Tester Connection	Condition	Specified Condition
   L4-5 (RR+) - I2-1	Always	Below 1 Ω
   L4-12 (RR-) - I2-2	Always	Below 1 Ω
   L4-5 (RR+) - Body ground	Always	10 kΩ or higher
   L4-12 (RR-) - Body ground	Always	10 kΩ or higher

   Tester Connection	Condition	Specified Condition
   L4-4 (RL+) - J2-1	Always	Below 1 Ω
   L4-11 (RL-) - J2-2	Always	Below 1 Ω
   L4-4 (RL+) - Body ground	Always	10 kΩ or higher
   L4-11 (RL-) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   28 

1. Disconnect the W16 rear No. 3 speaker assembly connector.
   Fig 7: Checking Rear No. 3 Speaker Assembly

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   1 - 2	Always	1.5 to 2.5 Ω
   3 - 4	Always	1.5 to 2.5 Ω

   TEXT IN ILLUSTRATION
   
   

   *1	Component without harness connected (Rear No. 3 Speaker Assembly)

NG → See step   29 

OK: Go to next step 

1. Disconnect the L3 stereo component amplifier assembly connector.
2. Disconnect the W16 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
   L3-8 (WF1+) - W16-2	Always	Below 1 Ω
   L3-7 (WF1-) - W16-1	Always	Below 1 Ω
   L3-4 (WF2+) - W16-4	Always	Below 1 Ω
   L3-10 (WF2-) - W16-3	Always	Below 1 Ω
   L3-8 (WF1+) - Body ground	Always	10 kΩ or higher
   L3-7 (WF1-) - Body ground	Always	10 kΩ or higher
   L3-4 (WF2+) - Body ground	Always	10 kΩ or higher
   L3-10 (WF2-) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   30