Toyota Camry owners & service manuals

Toyota Camry: Speaker Circuit

DESCRIPTION

If there is a short in a speaker circuit, the stereo component amplifier assembly detects it and stops output to the speakers.

Thus sound cannot be heard from the speakers even if there is no malfunction in the stereo component amplifier assembly, DCM (telematics transceiver)* or speakers.

  • *: w/ Manual (SOS) Switch

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

  • Depending on the parts that are replaced during vehicle inspection or maintenance, performing initialization, registration or calibration may be needed. Refer to Precaution for Navigation System.

    Click here

  • Before replacing the DCM (telematics transceiver), refer to Registration.

    Click here

PROCEDURE

1.

CHECK SPEAKER (OPERATION CHECK)

(a) Enter the "System Check Mode" screen. Refer to Check Speaker in Operation Check.

Click here

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

Not Operating Speaker

Proceed to

Front No. 1 speaker assembly or front No. 3 speaker assembly

A

Front No. 2 speaker assembly

(w/ Manual (SOS) Switch)

B

Front No. 2 speaker assembly

(w/o Manual (SOS) Switch)

C

Rear speaker assembly

D

Rear stereo component speaker assembly

E

HINT:

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

B

GO TO STEP 5

C

GO TO STEP 8

D

GO TO STEP 10

E

GO TO STEP 12

A

2.

CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY - FRONT NO. 1 SPEAKER ASSEMBLY - FRONT NO. 3 SPEAKER ASSEMBLY)

(a) Disconnect the K14 stereo component amplifier assembly connector.

(b) Disconnect the N1 and O1 front No. 1 speaker assembly connectors.

(c) Disconnect the K109 and K110 front No. 3 speaker assembly connectors.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

K14-15 (FR+) - K109-4 (+TW)

Always

Below 1 Ω

K14-30 (FR-) - K109-2 (-TW)

Always

Below 1 Ω

K14-13 (FL+) - K110-4 (+TW)

Always

Below 1 Ω

K14-28 (FL-) - K110-2 (-TW)

Always

Below 1 Ω

N1-2 - K109-3 (+)

Always

Below 1 Ω

N1-1 - K109-1 (-)

Always

Below 1 Ω

O1-2 - K110-3 (+)

Always

Below 1 Ω

O1-1 - K110-1 (-)

Always

Below 1 Ω

K14-15 (FR+) or K109-4 (+TW) - Body ground

Always

10 kΩ or higher

K14-30 (FR-) or K109-2 (-TW) - Body ground

Always

10 kΩ or higher

K14-13 (FL+) or K110-4 (+TW) - Body ground

Always

10 kΩ or higher

K14-28 (FL-) or K110-2 (-TW) - Body ground

Always

10 kΩ or higher

N1-2 or K109-3 (+) - Body ground

Always

10 kΩ or higher

N1-1 or K109-1 (-) - Body ground

Always

10 kΩ or higher

O1-2 or K110-3 (+) - Body ground

Always

10 kΩ or higher

O1-1 or K110-1 (-) - Body ground

Always

10 kΩ or higher

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

3.

INSPECT FRONT NO. 1 SPEAKER ASSEMBLY

(a) Remove the front No. 1 speaker assembly.

Click here

(b) Inspect the front No. 1 speaker assembly.

Click here

NG

REPLACE FRONT NO. 1 SPEAKER ASSEMBLY

OK

4.

REPLACE FRONT NO. 3 SPEAKER ASSEMBLY

(a) Remove the front No. 3 speaker assembly.

Click here

(b) Inspect the front No. 3 speaker assembly.

Click here

OK:

Malfunction disappears.

OK

END

NG

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

5.

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

(a) Disconnect the K14 stereo component amplifier assembly connector.

(b) Disconnect the K94 and K95 front No. 2 speaker assembly connectors.

(c) Disconnect the K139 DCM (telematics transceiver) connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

K14-14 (TWR+) - K139-1 (SPI+)

Always

Below 1 Ω

K14-29 (TWR-) - K139-2 (SPI-)

Always

Below 1 Ω

K139-3 (SPO+) - K94-2 (TWR+)

Always

Below 1 Ω

K139-4 (SPO-) - K94-1 (TWR-)

Always

Below 1 Ω

K14-12 (TWL+) - K95-2 (TWL+)

Always

Below 1 Ω

K14-27 (TWL-) - K95-1 (TWL-)

Always

Below 1 Ω

K14-14 (TWR+) or K139-1 (SPI+) - Body ground

Always

10 kΩ or higher

K14-29 (TWR-) or K139-2 (SPI-) - Body ground

Always

10 kΩ or higher

K14-12 (TWL+) or K95-2 (TWL+) - Body ground

Always

10 kΩ or higher

K14-27 (TWL-) or K95-1 (TWL-) - Body ground

Always

10 kΩ or higher

K139-3 (SPO+) or K94-2 (TWR+) - Body ground

Always

10 kΩ or higher

K139-4 (SPO-) or K94-1 (TWR-) - Body ground

Always

10 kΩ or higher

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

6.

INSPECT FRONT NO. 2 SPEAKER ASSEMBLY

(a) Remove the front No. 2 speaker assembly.

Click here

(b) Inspect the front No. 2 speaker assembly.

Click here

NG

REPLACE FRONT NO. 2 SPEAKER ASSEMBLY

OK

7.

INSPECT DCM (TELEMATICS TRANSCEIVER)

(a) Remove the DCM (telematics transceiver).

Click here

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

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

*a

Component without harness connected

(DCM (Telematics Transceiver))

OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

NG

REPLACE DCM (TELEMATICS TRANSCEIVER)

8.

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

(a) Disconnect the K14 stereo component amplifier assembly connector.

(b) Disconnect the K94 and K95 front No. 2 speaker assembly connectors.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

K14-14 (TWR+) - K94-2 (TWR+)

Always

Below 1 Ω

K14-29 (TWR-) - K94-1 (TWR-)

Always

Below 1 Ω

K14-12 (TWL+) - K95-2 (TWL+)

Always

Below 1 Ω

K14-27 (TWL-) - K95-1 (TWL-)

Always

Below 1 Ω

K14-14 (TWR+) or K94-2 (TWR+) - Body ground

Always

10 kΩ or higher

K14-29 (TWR-) or K94-1 (TWR-) - Body ground

Always

10 kΩ or higher

K14-12 (TWL+) or K95-2 (TWL+) - Body ground

Always

10 kΩ or higher

K14-27 (TWL-) or K95-1 (TWL-) - Body ground

Always

10 kΩ or higher

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

9.

INSPECT FRONT NO. 2 SPEAKER ASSEMBLY

(a) Remove the front No. 2 speaker assembly.

Click here

(b) Inspect the front No. 2 speaker assembly.

Click here

OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

NG

REPLACE FRONT NO. 2 SPEAKER ASSEMBLY

10.

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

(a) Disconnect the K14 stereo component amplifier assembly connector.

(b) Disconnect the P7 and Q7 rear speaker assembly connectors.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

K14-11 (RR+) - P7-2

Always

Below 1 Ω

K14-26 (RR-) - P7-1

Always

Below 1 Ω

K14-9 (RL+) - Q7-2

Always

Below 1 Ω

K14-24 (RL-) - Q7-1

Always

Below 1 Ω

K14-11 (RR+) or P7-2 - Body ground

Always

10 kΩ or higher

K14-26 (RR-) or P7-1 - Body ground

Always

10 kΩ or higher

K14-9 (RL+) or Q7-2 - Body ground

Always

10 kΩ or higher

K14-24 (RL-) or Q7-1 - Body ground

Always

10 kΩ or higher

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

11.

INSPECT REAR SPEAKER ASSEMBLY

(a) Remove the rear speaker assembly.

Click here

(b) Inspect the rear speaker assembly.

Click here

OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

NG

REPLACE REAR SPEAKER ASSEMBLY

12.

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

(a) Disconnect the K14 stereo component amplifier assembly connector.

(b) Disconnect the R1 rear stereo component speaker assembly connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

K14-10 (WF1+) - R1-4 (WF1+)

Always

Below 1 Ω

K14-25 (WF1-) - R1-3 (WF1-)

Always

Below 1 Ω

K14-8 (WF2+) - R1-2 (WF2+)

Always

Below 1 Ω

K14-23 (WF2-) - R1-1 (WF2-)

Always

Below 1 Ω

K14-10 (WF1+) or R1-4 (WF1+) - Body ground

Always

10 kΩ or higher

K14-25 (WF1-) or R1-3 (WF1-) - Body ground

Always

10 kΩ or higher

K14-8 (WF2+) or R1-2 (WF2+) - Body ground

Always

10 kΩ or higher

K14-23 (WF2-) or R1-1 (WF2-) - Body ground

Always

10 kΩ or higher

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

13.

INSPECT REAR STEREO COMPONENT SPEAKER ASSEMBLY

(a) Remove the rear stereo component speaker assembly.

Click here

(b) Inspect the rear stereo component speaker assembly.

Click here

OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

NG

REPLACE REAR STEREO COMPONENT SPEAKER ASSEMBLY

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