Speaker Circuit [10/2014 - ]: Procedure

CONFIRM MODEL

Choose the model to be inspected.

Result

Result	Proceed to
for 9 Speakers	A
for 11 Speakers	B

Result:

See step 21

Result:

See step 2

CHECK SPEAKER

Enter the "System Check Mode" screen. Refer to Check Speaker in Operation Check (Refer to OPERATION CHECK [10/2014 - ] ).

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

Result

Result	Proceed to
Front No. 2 speaker assembly or front No. 3 speaker assembly (w/o Manual (SOS) Switch)	A
Front No. 2 speaker assembly or front No. 3 speaker assembly (w/ Manual (SOS) Switch)	B
Rear No. 2 speaker assembly	C
Front No. 1 speaker assembly	D
Rear speaker assembly	E

HINT:

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

Result:

See step 8

Result:

See step 14

Result:

See step 17

Result:

See step 19

Result:

See step 3

CHECK HARNESS AND CONNECTOR (NAVIGATION ECU SUB-ASSEMBLY - FRONT NO. 3 SPEAKER ASSEMBLY)

Disconnect the I6 navigation ECU sub-assembly connector.
Disconnect the I83 and I1 front No. 2 speaker assembly connectors.
Disconnect the I60 front No. 3 speaker assembly connector.

Measure the resistance between each of the front No. 2 speaker assemblies and the navigation ECU sub-assembly to check for an open circuit in the wire harness.

Standard Resistance

Tester Connection	Condition	Specified Condition
I6-1 (FR+) - I83-4 (TWR+)	Always	Below 1 Ω
I6-5 (FR-) - I83-2 (TWR-)	Always	Below 1 Ω
I6-2 (FL+) - I1-4 (TWL+)	Always	Below 1 Ω
I6-6 (FL-) - I1-2 (TWL-)	Always	Below 1 Ω

Measure the resistance between each of the front No. 2 speaker assemblies and the front No. 3 speaker assembly to check for an open circuit in the wire harness.

Standard Resistance

Tester Connection	Condition	Specified Condition
I83-3 (+) - I60-4 (+)	Always	Below 1 Ω
I83-1 (-) - I60-2 (-)	Always	Below 1 Ω
I1-3 (+) - I60-3 (+)	Always	Below 1 Ω
I1-1 (-) - I60-1 (-)	Always	Below 1 Ω

Measure the resistance between the navigation ECU sub-assembly and body ground to check for a short circuit in the wire harness.

Standard Resistance

Tester Connection	Condition	Specified Condition
I6-1 (FR+) - Body ground	Always	10 kΩ or higher
I6-5 (FR-) - Body ground	Always	10 kΩ or higher
I6-2 (FL+) - Body ground	Always	10 kΩ or higher
I6-6 (FL-) - Body ground	Always	10 kΩ or higher

Measure the resistance between the front No. 3 speaker assembly and body ground to check for a short circuit in the wire harness.

Standard Resistance

Tester Connection	Condition	Specified Condition
I60-4 (+) - Body ground	Always	10 kΩ or higher
I60-2 (-) - Body ground	Always	10 kΩ or higher
I60-3 (+) - Body ground	Always	10 kΩ or higher
I60-1 (-) - Body ground	Always	10 kΩ or higher

Result:

REPAIR OR REPLACE HARNESS OR CONNECTOR

Result:

See step 4

INSPECT FRONT NO. 2 SPEAKER ASSEMBLY

Remove the front No. 2 speaker assembly (Refer to REMOVAL [10/2014 - ] ).

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 (TWR+) - 2 (TWR-)	Always	10 kΩ or higher
3 (+) - 4 (TWR+)	Always	Below 1 Ω
1 (-) - 2 (TWR-)	Always	Below 1 Ω
4 (TWL+) - 2 (TWL-)	Always	10 kΩ or higher
3 (+) - 4 (TWL+)	Always	Below 1 Ω
1 (-) - 2 (TWL-)	Always	Below 1 Ω

TEXT IN ILLUSTRATION

*A	for RH
*B	for LH
*a	Component without harness connected (Front No. 2 Speaker Assembly)

Result:

REPLACE FRONT NO. 2 SPEAKER ASSEMBLY

(Refer to REMOVAL [10/2014 - ] )

Result:

See step 5

REPLACE FRONT NO. 2 SPEAKER ASSEMBLY
1. Check that the malfunction disappears when a new or known good speaker is installed (Refer to REMOVAL [10/2014 - ] ).
  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 speaker is defective, inspect by interchanging the right one with the left one.
  - Perform the above inspection on both the LH and RH side.
Result:

OK

END (FRONT NO. 2 SPEAKER ASSEMBLY WAS DEFECTIVE)

Result:

NG

See step 6

INSPECT FRONT NO. 3 SPEAKER ASSEMBLY

Remove the front No. 3 speaker assembly (Refer to REMOVAL [10/2014 - ] ).

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 (+) - 2 (-)	Always	10 kΩ or higher
3 (+) - 1 (-)	Always	10 kΩ or higher

TEXT IN ILLUSTRATION

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

Result:

REPLACE FRONT NO. 3 SPEAKER ASSEMBLY

(Refer to REMOVAL [10/2014 - ] )

Result:

See step 7

REPLACE FRONT NO. 3 SPEAKER ASSEMBLY
1. Check that the malfunction disappears when a new or known good speaker is installed (Refer to REMOVAL [10/2014 - ] ).
  OK
  
  Malfunction disappears.
Result:

OK

END (FRONT NO. 3 SPEAKER ASSEMBLY WAS DEFECTIVE)

Result:

NG

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

(Refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2014 - 10/2015] or HOW TO PROCEED WITH TROUBLESHOOTING [10/2015 - ] )

CHECK HARNESS AND CONNECTOR (NAVIGATION ECU SUB-ASSEMBLY - DCM (TELEMATICS TRANSCEIVER) - FRONT NO. 2 SPEAKER ASSEMBLY - FRONT NO. 3 SPEAKER ASSEMBLY)

Disconnect the I6 navigation ECU sub-assembly connector.
Disconnect the I83 and I1 front No. 2 speaker assembly connectors.
Disconnect the I60 front No. 3 speaker assembly connector.
Disconnect the I135 DCM (telematics transceiver) connector.

Measure the resistance between the navigation ECU sub-assembly and the DCM (telematics transceiver) to check for an open circuit in the wire harness.

Standard Resistance

Tester Connection	Condition	Specified Condition
I6-1 (FR+) - I135-2 (SPI+)	Always	Below 1 Ω
I6-5 (FR-) - I135-3 (SPI-)	Always	Below 1 Ω

Measure the resistance between the front No. 2 speaker assembly RH and the DCM (telematics transceiver) to check for an open circuit in the wire harness.

Standard Resistance

Tester Connection	Condition	Specified Condition
I83-4 (TWR+) - I135-5 (SPO+)	Always	Below 1 Ω
I83-2 (TWR-) - I135-6 (SPO-)	Always	Below 1 Ω

Measure the resistance between the front No. 2 speaker assembly LH and the navigation ECU sub-assembly to check for an open circuit in the wire harness.

Standard Resistance

Tester Connection	Condition	Specified Condition
I6-2 (FL+) - I1-4 (TWL+)	Always	Below 1 Ω
I6-6 (FL-) - I1-2 (TWL-)	Always	Below 1 Ω

Measure the resistance between each of the front No. 2 speaker assemblies and the front No. 3 speaker assembly to check for an open circuit in the wire harness.

Standard Resistance

Tester Connection	Condition	Specified Condition
I83-3 (+) - I60-4 (+)	Always	Below 1 Ω
I83-1 (-) - I60-2 (-)	Always	Below 1 Ω
I1-3 (+) - I60-3 (+)	Always	Below 1 Ω
I1-1 (-) - I60-1 (-)	Always	Below 1 Ω

Measure the resistance between the navigation ECU sub-assembly and body ground to check for a short circuit in the wire harness.

Standard Resistance

Tester Connection	Condition	Specified Condition
I6-1 (FR+) - Body ground	Always	10 kΩ or higher
I6-5 (FR-) - Body ground	Always	10 kΩ or higher
I6-2 (FL+) - Body ground	Always	10 kΩ or higher
I6-6 (FL-) - Body ground	Always	10 kΩ or higher

Measure the resistance between the front No. 3 speaker assembly and body ground to check for a short circuit in the wire harness.

Standard Resistance

Tester Connection	Condition	Specified Condition
I60-4 (+) - Body ground	Always	10 kΩ or higher
I60-2 (-) - Body ground	Always	10 kΩ or higher
I60-3 (+) - Body ground	Always	10 kΩ or higher
I60-1 (-) - Body ground	Always	10 kΩ or higher

Measure the resistance between the DCM (telematics transceiver) and body ground to check for a short circuit in the wire harness.

Standard Resistance

Tester Connection	Condition	Specified Condition
I135-5 (SPO+) - Body ground	Always	10 kΩ or higher
I135-6 (SPO-) - Body ground	Always	10 kΩ or higher

Result:

REPAIR OR REPLACE HARNESS OR CONNECTOR

Result:

See step 9

INSPECT FRONT NO. 2 SPEAKER ASSEMBLY

Remove the front No. 2 speaker assembly (Refer to REMOVAL [10/2014 - ] ).

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 (TWR+) - 2 (TWR-)	Always	10 kΩ or higher
3 (+) - 4 (TWR+)	Always	Below 1 Ω
1 (-) - 2 (TWR-)	Always	Below 1 Ω
4 (TWL+) - 2 (TWL-)	Always	10 kΩ or higher
3 (+) - 4 (TWL+)	Always	Below 1 Ω
1 (-) - 2 (TWL-)	Always	Below 1 Ω

TEXT IN ILLUSTRATION

*A	for RH
*B	for LH
*a	Component without harness connected (Front No. 2 Speaker Assembly)

Result:

REPLACE FRONT NO. 2 SPEAKER ASSEMBLY

(Refer to REMOVAL [10/2014 - ] )

Result:

See step 10

REPLACE FRONT NO. 2 SPEAKER ASSEMBLY
1. Check that the malfunction disappears when a new or known good speaker is installed (Refer to REMOVAL [10/2014 - ] ).
  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 speaker is defective, inspect by interchanging the right one with the left one.
  - Perform the above inspection on both the LH and RH side.
Result:

OK

END (FRONT NO. 2 SPEAKER ASSEMBLY WAS DEFECTIVE)

Result:

NG

See step 11

INSPECT FRONT NO. 3 SPEAKER ASSEMBLY

Remove the front No. 3 speaker assembly (Refer to REMOVAL [10/2014 - ] ).

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 (+) - 2 (-)	Always	10 kΩ or higher
3 (+) - 1 (-)	Always	10 kΩ or higher

TEXT IN ILLUSTRATION

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

Result:

REPLACE FRONT NO. 3 SPEAKER ASSEMBLY

(Refer to REMOVAL [10/2014 - ] )

Result:

See step 12

REPLACE FRONT NO. 3 SPEAKER ASSEMBLY
1. Check that the malfunction disappears when a new or known good speaker is installed (Refer to REMOVAL [10/2014 - ] ).
  OK
  
  Malfunction disappears.
Result:

OK

END (FRONT NO. 3 SPEAKER ASSEMBLY WAS DEFECTIVE)

Result:

NG

See step 13

INSPECT DCM (TELEMATICS TRANSCEIVER)

Remove the DCM (telematics transceiver) (Refer to REMOVAL [10/2014 - ] ).

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

TEXT IN ILLUSTRATION

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

Result:

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

(Refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2014 - 10/2015] Refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2015 - ] )

Result:

REPLACE DCM (TELEMATICS TRANSCEIVER)

(Refer to REMOVAL [10/2014 - ] )

CHECK HARNESS AND CONNECTOR (NAVIGATION ECU SUB-ASSEMBLY - REAR NO. 2 SPEAKER ASSEMBLY)

Disconnect the I7 navigation ECU sub-assembly connector.
Disconnect the O19 and O20 rear No. 2 speaker assembly connectors.

Measure the resistance between each of the rear No. 2 speaker assemblies and the navigation ECU sub-assembly to check for an open circuit in the wire harness.

Standard Resistance

Tester Connection	Condition	Specified Condition
I7-1 (RR+) - O19-4	Always	Below 1 Ω
I7-3 (RR-) - O19-2	Always	Below 1 Ω
I7-2 (RL+) - O20-4	Always	Below 1 Ω
I7-6 (RL-) - O20-2	Always	Below 1 Ω

Measure the resistance between the navigation ECU sub-assembly and body ground to check for a short circuit in the wire harness.

Standard Resistance

Tester Connection	Condition	Specified Condition
I7-1 (RR+) - Body ground	Always	10 kΩ or higher
I7-3 (RR-) - Body ground	Always	10 kΩ or higher
I7-2 (RL+) - Body ground	Always	10 kΩ or higher
I7-6 (RL-) - Body ground	Always	10 kΩ or higher

Result:

REPAIR OR REPLACE HARNESS OR CONNECTOR

Result:

See step 15

INSPECT REAR NO. 2 SPEAKER ASSEMBLY

Remove the rear No. 2 speaker assembly (Refer to REMOVAL [10/2014 - ] ).

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 - 2	Always	10 kΩ or higher

TEXT IN ILLUSTRATION

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

Result:

See step 30

Result:

See step 16

REPLACE REAR NO. 2 SPEAKER ASSEMBLY
1. Check that the malfunction disappears when a new or known good speaker is installed (Refer to REMOVAL [10/2014 - ] ).
  OK
  
  Malfunction disappears.
  
  HINT:
  - Connect all the connectors to the rear No. 2 speaker assemblies that were disconnected.
  - When there is a possibility that either the right or left speaker is defective, inspect by interchanging the right one with the left one.
  - Perform the above inspection on both the LH and RH side.
Result:

OK

END (REAR NO. 2 SPEAKER ASSEMBLY WAS DEFECTIVE)

Result:

NG

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

(Refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2014 - 10/2015] or HOW TO PROCEED WITH TROUBLESHOOTING [10/2015 - ] )

CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY - FRONT NO. 1 SPEAKER ASSEMBLY)

Disconnect the E7 stereo component amplifier assembly connector.
Disconnect the I84 and I2 front No. 1 speaker assembly connectors.

Measure the resistance between each of the front No. 1 speaker assemblies and the stereo component amplifier assembly to check for an open circuit in the wire harness.

Standard Resistance

Tester Connection	Condition	Specified Condition
E7-1 (R+) - I84-1	Always	Below 1 Ω
E7-5 (R-) - I84-2	Always	Below 1 Ω
E7-2 (L+) - I2-1	Always	Below 1 Ω
E7-6 (L-) - I2-2	Always	Below 1 Ω

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
E7-1 (R+) - Body ground	Always	10 kΩ or higher
E7-5 (R-) - Body ground	Always	10 kΩ or higher
E7-2 (L+) - Body ground	Always	10 kΩ or higher
E7-6 (L-) - Body ground	Always	10 kΩ or higher

Result:

REPAIR OR REPLACE HARNESS OR CONNECTOR

Result:

See step 18

INSPECT FRONT NO. 1 SPEAKER ASSEMBLY

Remove the front No. 1 speaker assembly (Refer to REMOVAL [10/2014 - ] ).

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	1.2 to 2.8 Ω

TEXT IN ILLUSTRATION

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

Result:

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

(Refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2014 - 10/2015] or HOW TO PROCEED WITH TROUBLESHOOTING [10/2015 - ] )

Result:

REPLACE FRONT NO. 1 SPEAKER ASSEMBLY

(Refer to REMOVAL [10/2014 - ] )

CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY - REAR SPEAKER ASSEMBLY)

Disconnect the E8 stereo component amplifier assembly connector.
Disconnect the K13 and K16 rear speaker assembly connectors.

Measure the resistance between each of the rear speaker assemblies and the stereo component amplifier assembly to check for an open circuit in the wire harness.

Standard Resistance

Tester Connection	Condition	Specified Condition
E8-4 (WFR+) - K13-1	Always	Below 1 Ω
E8-11 (WFR-) - K13-2	Always	Below 1 Ω
E8-5 (WFL+) - K16-1	Always	Below 1 Ω
E8-12 (WFL-) - K16-2	Always	Below 1 Ω

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
E8-4 (WFR+) - Body ground	Always	10 kΩ or higher
E8-11 (WFR-) - Body ground	Always	10 kΩ or higher
E8-5 (WFL+) - Body ground	Always	10 kΩ or higher
E8-12 (WFL-) - Body ground	Always	10 kΩ or higher

Result:

REPAIR OR REPLACE HARNESS OR CONNECTOR

Result:

See step 20

INSPECT REAR SPEAKER ASSEMBLY

Remove the rear speaker assembly (Refer to REMOVAL [10/2014 - ] ).

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	1.2 to 2.8 Ω

TEXT IN ILLUSTRATION

*a	Component without harness connected (Rear Speaker Assembly)

Result:

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

(Refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2014 - 10/2015] or HOW TO PROCEED WITH TROUBLESHOOTING [10/2015 - ] )

Result:

REPLACE REAR SPEAKER ASSEMBLY

(Refer to REMOVAL [10/2014 - ] )

CHECK SPEAKER

Enter the "System Check Mode" screen. Refer to Check Speaker in Operation Check (Refer to OPERATION CHECK [10/2014 - ] ).

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

Result

Result	Proceed to
Front No. 2 speaker assembly (w/o Manual (SOS) Switch)	A
Front No. 2 speaker assembly (w/ Manual (SOS) Switch)	B
Front No. 1 speaker assembly	C
Front No. 3 speaker assembly	D
Rear No. 2 speaker assembly, rear header speaker assembly or rear speaker assembly	E

Result:

See step 25

Result:

See step 29

Result:

See step 31

Result:

See step 33

Result:

See step 22

CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY - FRONT NO. 2 SPEAKER ASSEMBLY)

Disconnect the E9 stereo component amplifier assembly connector.
Disconnect the J5 and K5 front No. 2 speaker assembly connectors.

Measure the resistance between each of the front No. 2 speaker assemblies and the stereo component amplifier assembly to check for an open circuit in the wire harness.

Standard Resistance

Tester Connection	Condition	Specified Condition
E9-12 (TWR+) - J5-4 (TWR+)	Always	Below 1 Ω
E9-27 (TWR-) - J5-3 (TWR-)	Always	Below 1 Ω
E9-11 (TWL+) - K5-4 (TWL+)	Always	Below 1 Ω
E9-26 (TWL-) - K5-3 (TWL-)	Always	Below 1 Ω

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
E9-12 (TWR+) - Body ground	Always	10 kΩ or higher
E9-27 (TWR-) - Body ground	Always	10 kΩ or higher
E9-11 (TWL+) - Body ground	Always	10 kΩ or higher
E9-26 (TWL-) - Body ground	Always	10 kΩ or higher

Result:

REPAIR OR REPLACE HARNESS OR CONNECTOR

Result:

See step 23

INSPECT FRONT NO. 2 SPEAKER ASSEMBLY

Remove the front No. 2 speaker assembly (Refer to REMOVAL [10/2014 - ] ).

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 (TWR+) - 3 (TWR-)	Always	10 kΩ or higher
4 (TWL+) - 3 (TWL-)	Always	10 kΩ or higher

TEXT IN ILLUSTRATION

*A	for RH
*B	for LH
*a	Component without harness connected (Front No. 2 Speaker Assembly)

Result:

REPLACE FRONT NO. 2 SPEAKER ASSEMBLY

(Refer to REMOVAL [10/2014 - ] )

Result:

See step 24

REPLACE FRONT NO. 2 SPEAKER ASSEMBLY
1. Check that the malfunction disappears when a new or known good speaker is installed (Refer to REMOVAL [10/2014 - ] ).
  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 speaker is defective, inspect by interchanging the right one with the left one.
  - Perform the above inspection on both the LH and RH side.
Result:

OK

END (FRONT NO. 2 SPEAKER ASSEMBLY WAS DEFECTIVE)

Result:

NG

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

(Refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2014 - 10/2015] or HOW TO PROCEED WITH TROUBLESHOOTING [10/2015 - ] )

CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY - DCM (TELEMATICS TRANSCEIVER) - FRONT NO. 2 SPEAKER ASSEMBLY)

Disconnect the E9 stereo component amplifier assembly connector.
Disconnect the J5 and K5 front No. 2 speaker assembly connectors.
Disconnect the I135 DCM (telematics transceiver) connector.

Measure the resistance between the stereo component amplifier assembly and the DCM (telematics transceiver) to check for an open circuit in the wire harness.

Standard Resistance

Tester Connection	Condition	Specified Condition
E9-12 (TWR+) - I135-2 (SPI+)	Always	Below 1 Ω
E9-27 (TWR-) - I135-3 (SPI-)	Always	Below 1 Ω

Measure the resistance between the front No. 2 speaker assembly RH and the DCM (telematics transceiver) to check for an open circuit in the wire harness.

Standard Resistance

Tester Connection	Condition	Specified Condition
J5-4 (TWR+) - I135-5 (SPO+)	Always	Below 1 Ω
J5-3 (TWR-) - I135-6 (SPO-)	Always	Below 1 Ω

Measure the resistance between the front No. 2 speaker assembly LH and the stereo component amplifier assembly to check for an open circuit in the wire harness.

Standard Resistance

Tester Connection	Condition	Specified Condition
E9-11 (TWL+) - K5-4 (TWL+)	Always	Below 1 Ω
E9-26 (TWL-) - K5-3 (TWL-)	Always	Below 1 Ω

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
E9-12 (TWR+) - Body ground	Always	10 kΩ or higher
E9-27 (TWR-) - Body ground	Always	10 kΩ or higher
E9-11 (TWL+) - Body ground	Always	10 kΩ or higher
E9-26 (TWL-) - Body ground	Always	10 kΩ or higher

Measure the resistance between the DCM (telematics transceiver) and body ground to check for a short circuit in the wire harness.

Standard Resistance

Tester Connection	Condition	Specified Condition
I135-5 (SPO+) - Body ground	Always	10 kΩ or higher
I135-6 (SPO-) - Body ground	Always	10 kΩ or higher

Result:

REPAIR OR REPLACE HARNESS OR CONNECTOR

Result:

See step 26

INSPECT FRONT NO. 2 SPEAKER ASSEMBLY

Remove the front No. 2 speaker assembly (Refer to REMOVAL [10/2014 - ] ).

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 (TWR+) - 3 (TWR-)	Always	10 kΩ or higher
4 (TWL+) - 3 (TWL-)	Always	10 kΩ or higher

TEXT IN ILLUSTRATION

*A	for RH
*B	for LH
*a	Component without harness connected (Front No. 2 Speaker Assembly)

Result:

REPLACE FRONT NO. 2 SPEAKER ASSEMBLY

(Refer to REMOVAL [10/2014 - ] )

Result:

See step 27

REPLACE FRONT NO. 2 SPEAKER ASSEMBLY
1. Check that the malfunction disappears when a new or known good speaker is installed (Refer to REMOVAL [10/2014 - ] ).
  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 speaker is defective, inspect by interchanging the right one with the left one.
  - Perform the above inspection on both the LH and RH side.
Result:

OK

END (FRONT NO. 2 SPEAKER ASSEMBLY WAS DEFECTIVE)

Result:

NG

See step 28

INSPECT DCM (TELEMATICS TRANSCEIVER)

Remove the DCM (telematics transceiver) (Refer to REMOVAL [10/2014 - ] ).

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

TEXT IN ILLUSTRATION

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

Result:

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

(Refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2014 - 10/2015] or HOW TO PROCEED WITH TROUBLESHOOTING [10/2015 - ] )

Result:

REPLACE DCM (TELEMATICS TRANSCEIVER)

(Refer to REMOVAL [10/2014 - ] )

CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY - FRONT NO. 1 SPEAKER ASSEMBLY)

Disconnect the E9 stereo component amplifier assembly connector.
Disconnect the I84 and I2 front No. 1 speaker assembly connectors.

Measure the resistance between each of the front No. 1 speaker assemblies and the stereo component amplifier assembly to check for an open circuit in the wire harness.

Standard Resistance

Tester Connection	Condition	Specified Condition
E9-15 (FR+) - I84-1	Always	Below 1 Ω
E9-30 (FR-) - I84-2	Always	Below 1 Ω
E9-4 (FL+) - I2-1	Always	Below 1 Ω
E9-19 (FL-) - I2-2	Always	Below 1 Ω

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
E9-15 (FR+) - Body ground	Always	10 kΩ or higher
E9-30 (FR-) - Body ground	Always	10 kΩ or higher
E9-4 (FL+) - Body ground	Always	10 kΩ or higher
E9-19 (FL-) - Body ground	Always	10 kΩ or higher

Result:

REPAIR OR REPLACE HARNESS OR CONNECTOR

Result:

See step 30

INSPECT FRONT NO. 1 SPEAKER ASSEMBLY

Remove the front No. 1 speaker assembly (Refer to REMOVAL [10/2014 - ] ).

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

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)

Result:

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

(Refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2014 - 10/2015] or HOW TO PROCEED WITH TROUBLESHOOTING [10/2015 - ] )

Result:

REPLACE FRONT NO. 1 SPEAKER ASSEMBLY

(Refer to REMOVAL [10/2014 - ] )

CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY - FRONT NO. 3 SPEAKER ASSEMBLY)

Disconnect the E9 stereo component amplifier assembly connector.
Disconnect the I60 front No. 3 speaker assembly connector.

Measure the resistance between the front No. 3 speaker assembly and the stereo component amplifier assembly to check for an open circuit in the wire harness.

Standard Resistance

Tester Connection	Condition	Specified Condition
E9-13 (CTR+) - I60-2	Always	Below 1 Ω
E9-28 (CTR-) - I60-1	Always	Below 1 Ω

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
E9-13 (CTR+) - Body ground	Always	10 kΩ or higher
E9-28 (CTR-) - Body ground	Always	10 kΩ or higher

Result:

REPAIR OR REPLACE HARNESS OR CONNECTOR

Result:

See step 32

INSPECT FRONT NO. 3 SPEAKER ASSEMBLY

Remove the front No. 3 speaker assembly (Refer to REMOVAL [10/2014 - ] ).

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

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)

Result:

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

(Refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2014 - 10/2015] or HOW TO PROCEED WITH TROUBLESHOOTING [10/2015 - ] )

Result:

REPLACE FRONT NO. 3 SPEAKER ASSEMBLY

(Refer to REMOVAL [10/2014 - ] )

CHECK SPEAKER

Enter the "System Check Mode" screen. Refer to Check Speaker in Operation Check (Refer to REMOVAL [10/2014 - ] ).

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

Result

Result	Proceed to
Rear No. 2 speaker assembly	A
Rear header speaker assembly	B
Rear speaker assembly	C

Result:

See step 37

Result:

See step 39

Result:

See step 34

CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY - REAR NO. 2 SPEAKER ASSEMBLY)

Disconnect the E9 stereo component amplifier assembly connector.
Disconnect the O19 and O20 rear No. 2 speaker assembly connectors.

Measure the resistance between each of the rear No. 2 speaker assemblies and the stereo component amplifier assembly to check for an open circuit in the wire harness.

Standard Resistance

Tester Connection	Condition	Specified Condition
E9-6 (RR+) - O19-4	Always	Below 1 Ω
E9-21 (RR-) - O19-3	Always	Below 1 Ω
E9-5 (RL+) - O20-4	Always	Below 1 Ω
E9-20 (RL-) - O20-3	Always	Below 1 Ω

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
E9-6 (RR+) - Body ground	Always	10 kΩ or higher
E9-21 (RR-) - Body ground	Always	10 kΩ or higher
E9-5 (RL+) - Body ground	Always	10 kΩ or higher
E9-20 (RL-) - Body ground	Always	10 kΩ or higher

Result:

REPAIR OR REPLACE HARNESS OR CONNECTOR

Result:

See step 35

INSPECT REAR NO. 2 SPEAKER ASSEMBLY

Remove the rear No. 2 speaker assembly (Refer to REMOVAL [10/2014 - ] ).

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

Standard Resistance

Tester Connection	Condition	Specified Condition
4 - 3	Always	10 kΩ or higher

TEXT IN ILLUSTRATION

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

Result:

REPLACE REAR NO. 2 SPEAKER ASSEMBLY

(Refer to REMOVAL [10/2014 - ] )

Result:

See step 36

REPLACE REAR NO. 2 SPEAKER ASSEMBLY
1. Check that the malfunction disappears when a new or known good speaker is installed (Refer to REMOVAL [10/2014 - ] ).
  OK
  
  Malfunction disappears.
  
  HINT:
  - Connect all the connectors to the rear No. 2 speaker assemblies that were disconnected.
  - When there is a possibility that either the right or left speaker is defective, inspect by interchanging the right one with the left one.
  - Perform the above inspection on both the LH and RH side.
Result:

OK

END (REAR NO. 2 SPEAKER ASSEMBLY WAS DEFECTIVE)

Result:

NG

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

(Refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2014 - 10/2015] or HOW TO PROCEED WITH TROUBLESHOOTING [10/2015 - ] )

CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY - REAR HEADER SPEAKER ASSEMBLY)

Disconnect the E9 stereo component amplifier assembly connector.
Disconnect the K14 and K15 rear header speaker assembly connectors.

Measure the resistance between each of the rear header speaker assemblies and the stereo component amplifier assembly to check for an open circuit in the wire harness.

Standard Resistance

Tester Connection	Condition	Specified Condition
E9-10 (SR+) - K14-2	Always	Below 1 Ω
E9-25 (SR-) - K14-1	Always	Below 1 Ω
E9-9 (SL+) - K15-2	Always	Below 1 Ω
E9-24 (SL-) - K15-1	Always	Below 1 Ω

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
E9-10 (SR+) - Body ground	Always	10 kΩ or higher
E9-25 (SR-) - Body ground	Always	10 kΩ or higher
E9-9 (SL+) - Body ground	Always	10 kΩ or higher
E9-24 (SL-) - Body ground	Always	10 kΩ or higher

Result:

REPAIR OR REPLACE HARNESS OR CONNECTOR

Result:

See step 38

INSPECT REAR HEADER SPEAKER ASSEMBLY

Remove the rear header speaker assembly (Refer to REMOVAL [10/2014 - ] ).

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

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 Header Speaker Assembly)

Result:

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

(Refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2014 - 10/2015] or HOW TO PROCEED WITH TROUBLESHOOTING [10/2015 - ] )

Result:

REPLACE REAR HEADER SPEAKER ASSEMBLY

(Refer to REMOVAL [10/2014 - ] )

CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY - REAR SPEAKER ASSEMBLY)

Disconnect the E9 stereo component amplifier assembly connector.
Disconnect the K13 and K16 rear speaker assembly connectors.

Measure the resistance between each of the rear speaker assemblies and the stereo component amplifier assembly to check for an open circuit in the wire harness.

Standard Resistance

Tester Connection	Condition	Specified Condition
E9-7 (WF2+) - K13-1	Always	Below 1 Ω
E9-22 (WF2-) - K13-2	Always	Below 1 Ω
E9-8 (WF1+) - K16-1	Always	Below 1 Ω
E9-23 (WF1-) - K16-2	Always	Below 1 Ω

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
E9-7 (WF2+) - Body ground	Always	10 kΩ or higher
E9-22 (WF2-) - Body ground	Always	10 kΩ or higher
E9-8 (WF1+) - Body ground	Always	10 kΩ or higher
E9-23 (WF1-) - Body ground	Always	10 kΩ or higher

Result:

REPAIR OR REPLACE HARNESS OR CONNECTOR

Result:

See step 40

INSPECT REAR SPEAKER ASSEMBLY

Remove the rear speaker assembly (Refer to REMOVAL [10/2014 - ] ).

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

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)

Result:

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

(Refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2014 - 10/2015] or HOW TO PROCEED WITH TROUBLESHOOTING [10/2015 - ] )

Result:

REPLACE REAR SPEAKER ASSEMBLY

(Refer to REMOVAL [10/2014 - ] )