AUDIO AND VISUAL SYSTEM (for Radio and Display Type with Intuitive Parking Assist System) 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 or speakers.

• If a short is detected in a speaker circuit, no sound can be heard from the speakers.

WIRING DIAGRAM

INSPECTION PROCEDURE

PROCEDURE

1. CHECK HARNESS AND CONNECTOR

   
   

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

   2. 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 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

   3. 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 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 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 I68-13 (CTR+) - I60-2 Always Below 1 Ω I68-28 (CTR-) - I60-1 Always Below 1 Ω

   5. 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 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

   6. Measure the resistance between the rear 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 I68-8 (WF1+) - O22-1 Always Below 1 Ω I68-23 (WF1-) - O22-2 Always Below 1 Ω

   7. 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 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 I68-13 (CTR+) - Body ground Always 10 kΩ or higher I68-28 (CTR-) - Body ground Always 10 kΩ or higher 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 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

2. INSPECT FRONT NO. 1 SPEAKER ASSEMBLY

   
   
   1. 

      Text in Illustration

      *A	for RH
      *B	for LH
      *a	Component without harness connected (Front No. 1 Speaker Assembly)

      Resistance check

      
      

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

         Standard Resistance
         Tester Connection Condition Specified Condition J5-1 (+) - J5-2 (-) Always 4.6 to 6.6 Ω K5-1 (+) - K5-2 (-) Always 4.6 to 6.6 Ω

   
   

   NG

   REPLACE FRONT NO. 1 SPEAKER ASSEMBLY Click here

   OK

3. INSPECT FRONT NO. 2 SPEAKER ASSEMBLY

   
   
   1. 

      Text in Illustration

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

      Resistance check

      
      

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

         Standard Resistance
         Tester Connection Condition Specified Condition I84-4 - I84-3 Always 3.4 to 5.2 Ω I2-4 - I2-3 Always 3.4 to 5.2 Ω

   
   

   NG

   REPLACE FRONT NO. 2 SPEAKER ASSEMBLY Click here

   OK

4. INSPECT FRONT NO. 3 SPEAKER ASSEMBLY

   
   
   1. 

      Text in Illustration

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

      Resistance check

      
      

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

         Standard Resistance
         Tester Connection Condition Specified Condition I60-1 - I60-2 Always 6.8 to 10.2 Ω

   
   

   NG

   REPLACE FRONT NO. 3 SPEAKER ASSEMBLY Click here

   OK

5. INSPECT REAR NO. 2 SPEAKER ASSEMBLY

   
   
   1. 

      Text in Illustration

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

      Resistance check

      
      

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

         Standard Resistance
         Tester Connection Condition Specified Condition O19-1 - O19-2 Always 6.8 to 10.2 Ω O20-1 - O20-2 Always 6.8 to 10.2 Ω

   
   

   NG

   REPLACE REAR NO. 2 SPEAKER ASSEMBLY Click here

   OK

6. INSPECT REAR SPEAKER ASSEMBLY

   
   
   1. 

      Text in Illustration

      *a	Component without harness connected (Rear Speaker Assembly)

      Resistance check

      
      

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

         Standard Resistance
         Tester Connection Condition Specified Condition O22-1 - O22-2 Always 4.8 to 6.8 Ω

   
   

   NG

   REPLACE REAR SPEAKER ASSEMBLY Click here

   OK

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