Speaker Circuit [08/2015 - ]: Procedure

1. Enter the "System Check Mode" screen.

   Refer to Check Speaker in Operation Check. Refer to OPERATION CHECK [08/2015 - ] .

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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	A
   Front No. 3 speaker assembly	B
   Front No. 2 speaker assembly	C
   Rear No. 2 speaker assembly or rear speaker assembly	D

   HINT: 

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

B → See step   4 

C → See step   6 

D → See step   9 

A: Go to next step 

1. Disconnect the I68 stereo component amplifier assembly connector.
2. Disconnect the J5 and K5 front No. 1 speaker assembly connectors.
3. Measure the resistance between the stereo component amplifier assembly and each of the front No. 1 speaker assemblies to check for an open circuit in the wire harness.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   I68-15 (FR+) - J5-1 (+)	Always	Below 1 Ω
   I68-30 (FR-) - J5-2 (-)	Always	Below 1 Ω
   I68-11 (FL+) - K5-1 (+)	Always	Below 1 Ω
   I68-26 (FL-) - K5-2 (-)	Always	Below 1 Ω

4. Measure the resistance between the stereo component amplifier assembly and body ground to check for a short circuit in the wire harness.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   I68-15 (FR+) - Body ground	Always	10 kΩ or higher
   I68-30 (FR-) - Body ground	Always	10 kΩ or higher
   I68-11 (FL+) - Body ground	Always	10 kΩ or higher
   I68-26 (FL-) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Remove the front No. 1 speaker assembly. Refer to REMOVAL [08/2015 - ] .
2. Measure the resistance according to the value(s) in the table below.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   1 (+) - 2 (-)	Always	4.6 to 6.6 Ω

   TEXT IN ILLUSTRATION
   
   

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

NG → See step   16 

OK → See step   15 

1. Disconnect the I68 stereo component amplifier assembly connector.
2. Disconnect the I60 front No. 3 speaker assembly connector.
3. Measure the resistance between the stereo component amplifier assembly and the front No. 3 speaker assembly to check for an open circuit in the wire harness.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   I68-13 (CTR+) - I60-2	Always	Below 1 Ω
   I68-28 (CTR-) - I60-1	Always	Below 1 Ω

4. Measure the resistance between the stereo component amplifier assembly and body ground to check for a short circuit in the wire harness.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   I68-13 (CTR+) - Body ground	Always	10 kΩ or higher
   I68-28 (CTR-) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Remove the front No. 3 speaker assembly. Refer to REMOVAL [08/2015 - ] .
2. Measure the resistance according to the value(s) in the table below.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   1 - 2	Always	6.8 to 10.2 Ω

   TEXT IN ILLUSTRATION
   
   

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

NG → See step   18 

OK → See step   15 

1. Disconnect the I68 stereo component amplifier assembly connector.
2. Disconnect the I84 and I2 front No. 2 speaker assembly connectors.
3. Measure the resistance between the stereo component amplifier assembly and each of the front No. 2 speaker assemblies to check for an open circuit in the wire harness.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   I68-12 (TWR+) - I84-4	Always	Below 1 Ω
   I68-27 (TWR-) - I84-3	Always	Below 1 Ω
   I68-14 (TWL+) - I2-4	Always	Below 1 Ω
   I68-29 (TWL-) - I2-3	Always	Below 1 Ω

4. Measure the resistance between the stereo component amplifier assembly and body ground to check for a short circuit in the wire harness.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   I68-12 (TWR+) - Body ground	Always	10 kΩ or higher
   I68-27 (TWR-) - Body ground	Always	10 kΩ or higher
   I68-14 (TWL+) - Body ground	Always	10 kΩ or higher
   I68-29 (TWL-) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Remove the front No. 2 speaker assembly. Refer to REMOVAL [08/2015 - ] .
2. Measure the resistance according to the value(s) in the table below.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   4 - 3	Always	3.4 to 5.2 Ω

   TEXT IN ILLUSTRATION
   
   

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

NG → See step   14 

OK: Go to next step 

1. Check that the malfunction disappears when a known good speaker is installed. Refer to REMOVAL [08/2015 - ] .

   OK

   Malfunction disappears.

   HINT: 

   • Connect all the connectors to the front No. 2 speaker assemblies that were disconnected.
   • When there is a possibility that either the right or left front No. 2 speaker assembly is defective, inspect by interchanging the right one with the left one.
   • Perform the above inspection on both the LH and RH side.

NG → See step   15 

OK → END 

1. Enter the "System Check Mode" screen.

   Refer to Check Speaker in Operation Check. Refer to OPERATION CHECK [08/2015 - ] .

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

   Result

   Not Operating Speaker	Proceed to
   Rear No. 2 speaker assembly	A
   Rear speaker assembly	B

   HINT: 

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

B → See step   12 

A: Go to next step 

1. Disconnect the I68 stereo component amplifier assembly connector.
2. Disconnect the O19 and O20 rear No. 2 speaker assembly connectors.
3. Measure the resistance between the stereo component amplifier assembly and each of the rear No. 2 speaker assemblies to check for an open circuit in the wire harness.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   I68-10 (SR+) - O19-2	Always	Below 1 Ω
   I68-25 (SR-) - O19-1	Always	Below 1 Ω
   I68-9 (SL+) - O20-2	Always	Below 1 Ω
   I68-24 (SL-) - O20-1	Always	Below 1 Ω

4. Measure the resistance between the stereo component amplifier assembly and body ground to check for a short circuit in the wire harness.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   I68-10 (SR+) - Body ground	Always	10 kΩ or higher
   I68-25 (SR-) - Body ground	Always	10 kΩ or higher
   I68-9 (SL+) - Body ground	Always	10 kΩ or higher
   I68-24 (SL-) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Remove the rear No. 2 speaker assembly. Refer to REMOVAL [08/2015 - ] .
2. Measure the resistance according to the value(s) in the table below.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   1 - 2	Always	6.8 to 10.2 Ω

   TEXT IN ILLUSTRATION
   
   

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

NG → See step   19 

OK → See step   15 

1. Disconnect the I68 stereo component amplifier assembly connector.
2. Disconnect the O22 rear speaker assembly connector.
3. Measure the resistance between the stereo component amplifier assembly and the rear speaker assembly to check for an open circuit in the wire harness.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   I68-8 (WF1+) - O22-1	Always	Below 1 Ω
   I68-23 (WF1-) - O22-2	Always	Below 1 Ω

4. Measure the resistance between the stereo component amplifier assembly and body ground to check for a short circuit in the wire harness.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   I68-8 (WF1+) - Body ground	Always	10 kΩ or higher
   I68-23 (WF1-) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Remove the rear speaker assembly. Refer to REMOVAL [08/2015 - ] .
2. Measure the resistance according to the value(s) in the table below.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   1 - 2	Always	4.8 to 6.8 Ω

   TEXT IN ILLUSTRATION
   
   

   *a	Component without harness connected (Rear Speaker Assembly)

NG → See step   17 

OK → See step   15