Home › Audio/Visual/Telematics › AUDIO / VIDEO › AUDIO AND VISUAL SYSTEM (w/o Navigation System)

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

for Preparation Click here


DESCRIPTION

for 10 Speakers:
  1. If there is a short in a speaker circuit, the stereo component amplifier assembly detects it and stops output to the speakers.
  2. Thus sound cannot be heard from the speakers even if there is no malfunction in the stereo component amplifier assembly or speakers.
  3. If a short is detected in a speaker circuit, no sound can be heard from the speakers.
for 6 Speakers:
  1. If there is a short in this circuit, the radio receiver assembly detects it and stops output to the speakers.
  2. Thus sound cannot be heard from the speakers even if there is no malfunction in the radio receiver assembly or speakers.
  3. If a short is detected in a speaker circuit, no sound can be heard from the speakers.

WIRING DIAGRAM


for 10 Speakers

E223335E01


E221502E02


for 6 Speakers

E223338E01


INSPECTION PROCEDURE

1.CONFIRM MODEL

  1. Choose the model to be inspected.

    Result:
    Model
    		Proceed to
    for 10 Speakers
    		A
    for 6 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 radio receiver assembly and speakers.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    H48-1 (FR+) - J1-1
    		Always
    		Below 1 Ω
    H48-5 (FR-) - J1-2
    		Always
    		Below 1 Ω

  1. Measure the resistance between the front No. 1 speaker assembly LH and the radio receiver assembly to check for an open circuit in the wire harness.

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    H48-2 (FL+) - K1-1
    		Always
    		Below 1 Ω
    H48-6 (FL-) - K1-2
    		Always
    		Below 1 Ω

  1. Measure the resistance between the radio setting condenser and the radio receiver assembly to check for an open circuit in the wire harness.

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    H48-1 (FR+) - H46-3 (RIN)
    		Always
    		Below 1 Ω
    H48-5 (FR-) - H46-6 (ROUT)
    		Always
    		Below 1 Ω

  1. Measure the resistance between the front No. 2 speaker assembly RH and the radio setting condenser to check for an open circuit in the wire harness.

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    H46-8 (RI+) - I3-2
    		Always
    		Below 1 Ω
    H46-7 (RI-) - I3-1
    		Always
    		Below 1 Ω

  1. Measure the resistance between the radio setting condenser and the radio receiver assembly to check for an open circuit in the wire harness.

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    H48-2 (FL+) - H46-1 (LIN)
    		Always
    		Below 1 Ω
    H48-6 (FL-) - H46-2 (LOUT)
    		Always
    		Below 1 Ω

  1. Measure the resistance between the front No. 2 speaker assembly LH and the radio setting condenser to check for an open circuit in the wire harness.

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    H46-4 (LI+) - I5-2
    		Always
    		Below 1 Ω
    H46-5 (LI-) - I5-1
    		Always
    		Below 1 Ω

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    H49-1 (RR+) - L4-1
    		Always
    		Below 1 Ω
    H49-3 (RR-) - L4-2
    		Always
    		Below 1 Ω

  1. Measure the resistance between the rear speaker assembly LH and the radio receiver assembly to check for an open circuit in the wire harness.

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    H49-2 (RL+) - M4-1
    		Always
    		Below 1 Ω
    H49-6 (RL-) - M4-2
    		Always
    		Below 1 Ω

  1. Measure the resistance between the radio receiver assembly and body ground to check for a short circuit in the wire harness.

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    H48-1 (FR+) - Body ground
    		Always
    		10 kΩ or higher
    H48-5 (FR-) - Body ground
    		Always
    		10 kΩ or higher
    H48-2 (FL+) - Body ground
    		Always
    		10 kΩ or higher
    H48-6 (FL-) - Body ground
    		Always
    		10 kΩ or higher
    H49-1 (RR+) - Body ground
    		Always
    		10 kΩ or higher
    H49-3 (RR-) - Body ground
    		Always
    		10 kΩ or higher
    H49-2 (RL+) - Body ground
    		Always
    		10 kΩ or higher
    H49-6 (RL-) - Body ground
    		Always
    		10 kΩ or higher

  1. Measure the resistance between the radio setting condenser and body ground to check for a short circuit in the wire harness.

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    H46-8 (RI+) - Body ground
    		Always
    		10 kΩ or higher
    H46-7 (RI-) - Body ground
    		Always
    		10 kΩ or higher
    H46-4 (LI+) - Body ground
    		Always
    		10 kΩ or higher
    H46-5 (LI-) - 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 11
A

REPAIR OR REPLACE HARNESS OR CONNECTOR 

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:
      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

      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:
      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

      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:
      Tester Connection
      		Condition
      		Specified Condition
      I2-1 - I2-2
      		Always
      		3.2 to 4.8 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.INSPECT REAR SPEAKER ASSEMBLY


    E219303E04

  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)



NG
REPLACE REAR SPEAKER ASSEMBLY (Click here)
OK


10.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:
      Tester Connection
      		Condition
      		Specified Condition
      P15-2 (WF1+) - P15-4 (WF2+)
      		Always
      		1.6 to 2.4 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)  

11.INSPECT FRONT NO. 1 SPEAKER ASSEMBLY


    E219303E05

  1. Resistance check

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

      Standard Resistance:
      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

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



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


12.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:
      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

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



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


13.REPLACE RADIO SETTING CONDENSER

  1. Check that the malfunction disappears when a known good radio setting condenser is installed.

    OK:
    Malfunction disappears.



NG
Go to step 14
OK

END (RADIO SETTING CONDENSER WAS DEFECTIVE) 

14.INSPECT REAR SPEAKER ASSEMBLY


    E219303E04

  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)



NG
REPLACE REAR SPEAKER ASSEMBLY (Click here)
OK

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