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AUDIO AND VISUAL SYSTEM (w/ Navigation System) > Speaker Circuit

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DESCRIPTION

If there is a short in a speaker circuit, the stereo component amplifier assembly detects the short 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 or speakers.

WIRING DIAGRAM


for 10 Speakers

E223335E01


E221502E02


for 13 Speakers

E223335E01


E221503E02


INSPECTION PROCEDURE

1.CONFIRM MODEL

  1. Choose the model to be inspected.

    Result:
    Model
    		Proceed to
    for 10 Speakers
    		A
    for 13 Speakers
    		B



B
Go to step 3
A


2.CHECK HARNESS AND CONNECTOR

  1. Disconnect the connectors from the stereo component amplifier assembly and speakers.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    H57-10 (FR+) - J1-1
    		Always
    		Below 1 Ω
    H57-9 (FR-) - J1-2
    		Always
    		Below 1 Ω

  1. Measure the resistance between the front No. 1 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
    H57-3 (FL+) - K1-1
    		Always
    		Below 1 Ω
    H57-8 (FL-) - K1-2
    		Always
    		Below 1 Ω

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    H58-4 (MR+) - I3-2
    		Always
    		Below 1 Ω
    H58-10 (MR-) - I3-1
    		Always
    		Below 1 Ω

  1. 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
    H58-3 (ML+) - I5-2
    		Always
    		Below 1 Ω
    H58-9 (ML-) - I5-1
    		Always
    		Below 1 Ω

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    H58-4 (MR+) - I4-2
    		Always
    		Below 1 Ω
    H58-10 (MR-) - I4-1
    		Always
    		Below 1 Ω

  1. Measure the resistance between the front No. 3 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
    H58-3 (ML+) - I6-2
    		Always
    		Below 1 Ω
    H58-9 (ML-) - I6-1
    		Always
    		Below 1 Ω

  1. Measure the resistance between the front No. 4 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
    H58-8 (CTR+) - I2-2
    		Always
    		Below 1 Ω
    H58-7 (CTR-) - I2-1
    		Always
    		Below 1 Ω

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    H57-5 (RR+) - L4-1
    		Always
    		Below 1 Ω
    H57-12 (RR-) - L4-2
    		Always
    		Below 1 Ω

  1. Measure the resistance between the rear 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
    H57-4 (RL+) - M4-1
    		Always
    		Below 1 Ω
    H57-11 (RL-) - M4-2
    		Always
    		Below 1 Ω

  1. Measure the resistance between the No. 1 speaker assembly with box and the stereo component amplifier assembly to check for an open circuit in the wire harness.

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    H58-1 (WF1+) - P15-2 (WF1+)
    		Always
    		Below 1 Ω
    H58-2 (WF2+) - P15-4 (WF2+)
    		Always
    		Below 1 Ω

  1. 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
    H57-10 (FR+) - Body ground
    		Always
    		10 kΩ or higher
    H57-9 (FR-) - Body ground
    		Always
    		10 kΩ or higher
    H57-3 (FL+) - Body ground
    		Always
    		10 kΩ or higher
    H57-8 (FL-) - Body ground
    		Always
    		10 kΩ or higher
    H57-5 (RR+) - Body ground
    		Always
    		10 kΩ or higher
    H57-12 (RR-) - Body ground
    		Always
    		10 kΩ or higher
    H57-4 (RL+) - Body ground
    		Always
    		10 kΩ or higher
    H57-11 (RL-) - Body ground
    		Always
    		10 kΩ or higher
    H58-4 (MR+) - Body ground
    		Always
    		10 kΩ or higher
    H58-10 (MR-) - Body ground
    		Always
    		10 kΩ or higher
    H58-3 (ML+) - Body ground
    		Always
    		10 kΩ or higher
    H58-9 (ML-) - Body ground
    		Always
    		10 kΩ or higher
    H58-8 (CTR+) - Body ground
    		Always
    		10 kΩ or higher
    H58-7 (CTR-) - Body ground
    		Always
    		10 kΩ or higher
    H58-1 (WF1+) - Body ground
    		Always
    		10 kΩ or higher
    H58-2 (WF2+) - Body ground
    		Always
    		10 kΩ or higher

  1. Proceed to the next step based on the inspection result.

    Result:
    Condition
    		Proceed to
    NG
    		A
    OK
    		B



B
Go to step 4
A

REPAIR OR REPLACE HARNESS OR CONNECTOR 

3.CHECK HARNESS AND CONNECTOR

  1. Disconnect the connectors from the stereo component amplifier assembly and speakers.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    H57-10 (FR+) - J1-1
    		Always
    		Below 1 Ω
    H57-9 (FR-) - J1-2
    		Always
    		Below 1 Ω

  1. Measure the resistance between the front No. 1 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
    H57-3 (FL+) - K1-1
    		Always
    		Below 1 Ω
    H57-8 (FL-) - K1-2
    		Always
    		Below 1 Ω

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    H58-4 (MR+) - I3-2
    		Always
    		Below 1 Ω
    H58-10 (MR-) - I3-1
    		Always
    		Below 1 Ω

  1. 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
    H58-3 (ML+) - I5-2
    		Always
    		Below 1 Ω
    H58-9 (ML-) - I5-1
    		Always
    		Below 1 Ω

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    H58-4 (MR+) - I4-2
    		Always
    		Below 1 Ω
    H58-10 (MR-) - I4-1
    		Always
    		Below 1 Ω

  1. Measure the resistance between the front No. 3 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
    H58-3 (ML+) - I6-2
    		Always
    		Below 1 Ω
    H58-9 (ML-) - I6-1
    		Always
    		Below 1 Ω

  1. Measure the resistance between the front No. 4 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
    H58-8 (CTR+) - I2-2
    		Always
    		Below 1 Ω
    H58-7 (CTR-) - I2-1
    		Always
    		Below 1 Ω

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    H57-5 (RR+) - Q10-2 (+)
    		Always
    		Below 1 Ω
    H57-12 (RR-) - Q10-1 (-)
    		Always
    		Below 1 Ω

  1. Measure the resistance between the rear 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
    H57-4 (RL+) - P14-2 (+)
    		Always
    		Below 1 Ω
    H57-11 (RL-) - P14-1 (-)
    		Always
    		Below 1 Ω

  1. Measure the resistance between the No. 1 speaker assembly with box and the stereo component amplifier assembly to check for an open circuit in the wire harness.

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    H58-1 (WF1+) - P15-2 (WF1+)
    		Always
    		Below 1 Ω
    H58-2 (WF2+) - P15-4 (WF2+)
    		Always
    		Below 1 Ω

  1. 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
    H57-10 (FR+) - Body ground
    		Always
    		10 kΩ or higher
    H57-9 (FR-) - Body ground
    		Always
    		10 kΩ or higher
    H57-3 (FL+) - Body ground
    		Always
    		10 kΩ or higher
    H57-8 (FL-) - Body ground
    		Always
    		10 kΩ or higher
    H57-5 (RR+) - Body ground
    		Always
    		10 kΩ or higher
    H57-12 (RR-) - Body ground
    		Always
    		10 kΩ or higher
    H57-4 (RL+) - Body ground
    		Always
    		10 kΩ or higher
    H57-11 (RL-) - Body ground
    		Always
    		10 kΩ or higher
    H58-4 (MR+) - Body ground
    		Always
    		10 kΩ or higher
    H58-10 (MR-) - Body ground
    		Always
    		10 kΩ or higher
    H58-3 (ML+) - Body ground
    		Always
    		10 kΩ or higher
    H58-9 (ML-) - Body ground
    		Always
    		10 kΩ or higher
    H58-8 (CTR+) - Body ground
    		Always
    		10 kΩ or higher
    H58-7 (CTR-) - Body ground
    		Always
    		10 kΩ or higher
    H58-1 (WF1+) - Body ground
    		Always
    		10 kΩ or higher
    H58-2 (WF2+) - Body ground
    		Always
    		10 kΩ or higher



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


4.INSPECT FRONT NO. 1 SPEAKER ASSEMBLY


    E219303E03

  1. Resistance check

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

      Standard Resistance:
      for 10 Speakers 
      Tester Connection
      		Condition
      		Specified Condition
      J1-1 - J1-2
      		Always
      		3.2 to 4.8 Ω
      K1-1 - K1-2
      		Always
      		3.2 to 4.8 Ω
      for 13 Speakers 
      Tester Connection
      		Condition
      		Specified Condition
      J1-1 - J1-2
      		Always
      		5 to 7 Ω
      K1-1 - K1-2
      		Always
      		5 to 7 Ω

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



NG
REPLACE FRONT NO. 1 SPEAKER ASSEMBLY (Click here)
OK


5.INSPECT FRONT NO. 2 SPEAKER ASSEMBLY


    E222247E01

  1. Resistance check

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

      Standard Resistance:
      for 10 Speakers 
      Tester Connection
      		Condition
      		Specified Condition
      I3-2 - I3-1
      		Always
      		3.2 to 4.8 Ω
      I5-2 - I5-1
      		Always
      		3.2 to 4.8 Ω
      for 13 Speakers 
      Tester Connection
      		Condition
      		Specified Condition
      I3-2 - I3-1
      		Always
      		4.6 to 7 Ω
      I5-2 - I5-1
      		Always
      		4.6 to 7 Ω

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



NG
REPLACE FRONT NO. 2 SPEAKER ASSEMBLY (Click here)
OK


6.INSPECT FRONT NO. 3 SPEAKER ASSEMBLY


    E222272E01

  1. Resistance check

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

      Standard Resistance:
      Tester Connection
      		Condition
      		Specified Condition
      I4-2 - I4-1
      		Always
      		10 kΩ or higher
      I6-2 - I6-1
      		Always
      		10 kΩ or higher

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



NG
REPLACE FRONT NO. 3 SPEAKER ASSEMBLY (Click here)
OK


7.REPLACE FRONT NO. 3 SPEAKER ASSEMBLY

  1. Check that the malfunction disappears when a known good speaker is installed (Click here).

    OK:
    Malfunction disappears.

    HINT:
    1. Connect all the connectors to the front No. 3 speaker assemblies that were disconnected.
    2. When there is a possibility that either the right or left speaker is defective, inspect by interchanging the right one with the left one.
    3. Perform the above inspection on both LH and RH sides.



NG
Go to step 8
OK

END (FRONT NO. 3 SPEAKER ASSEMBLY WAS DEFECTIVE) 

8.INSPECT FRONT NO. 4 SPEAKER ASSEMBLY


    E222247E05

  1. Resistance check

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

      Standard Resistance:
      for 10 Speakers 
      Tester Connection
      		Condition
      		Specified Condition
      I2-1 - I2-2
      		Always
      		3.2 to 4.8 Ω
      for 13 Speakers 
      Tester Connection
      		Condition
      		Specified Condition
      I2-1 - I2-2
      		Always
      		4.6 to 7 Ω

      Text in Illustration 
      *a
      		Component without harness connected
      (Front No. 4 Speaker Assembly)



NG
REPLACE FRONT NO. 4 SPEAKER ASSEMBLY (Click here)
OK


9.CONFIRM MODEL

  1. Choose the model to be inspected.

    Result:
    Model
    		Proceed to
    for 10 Speakers
    		A
    for 13 Speakers
    		B



B
Go to step 11
A


10.INSPECT REAR SPEAKER ASSEMBLY


    E219303E06

  1. Resistance check

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

      Standard Resistance:
      Tester Connection
      		Condition
      		Specified Condition
      L4-1 - L4-2
      		Always
      		3.2 to 4.8 Ω
      M4-1 - M4-2
      		Always
      		3.2 to 4.8 Ω

      Text in Illustration 
      *a
      		Component without harness connected
      (Rear Speaker Assembly)

  1. Proceed to the next step based on the inspection result.

    Result:
    Condition
    		Proceed to
    NG
    		A
    OK
    		B



B
Go to step 12
A

REPLACE REAR SPEAKER ASSEMBLY (Click here)  

11.INSPECT REAR NO. 2 SPEAKER ASSEMBLY


    E222247E03

  1. Resistance check

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

      Standard Resistance:
      Tester Connection
      		Condition
      		Specified Condition
      Q10-1 (-) - Q10-2 (+)
      		Always
      		4.6 to 7 Ω
      P14-1 (-) - P14-2 (+)
      		Always
      		4.6 to 7 Ω

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



NG
REPLACE REAR NO. 2 SPEAKER ASSEMBLY (Click here)
OK


12.INSPECT NO. 1 SPEAKER ASSEMBLY WITH BOX


    E222275E01

  1. Resistance check

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

      Standard Resistance:
      for 10 Speakers 
      Tester Connection
      		Condition
      		Specified Condition
      P15-2 (WF1+) - P15-4 (WF2+)
      		Always
      		1.6 to 2.4 Ω
      for 13 Speakers 
      Tester Connection
      		Condition
      		Specified Condition
      P15-2 (WF1+) - P15-4 (WF2+)
      		Always
      		11.6 to 12.4 Ω

      Text in Illustration 
      *a
      		Component without harness connected
      (No. 1 Speaker Assembly with Box)



NG
REPLACE NO. 1 SPEAKER ASSEMBLY WITH BOX (Click here)
OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE (Click here)