AUDIO AND VISUAL SYSTEM (for Radio and Display Type) Speaker Circuit

DESCRIPTION

The radio receiver assembly sends sound signals to the speakers.

INSPECTION PROCEDURE

PROCEDURE

1. Click here

   CHECK SPEAKER

   
   

   1. Check the malfunctioning speakers.

      Table 1. Result

      Result	Proceed to
      Malfunction in front speaker area	A
      Malfunction in rear speaker area	B

   
   
   • AClick here
   • BClick here
2. Click here

   CHECK FRONT SIDE SPEAKER

   
   

   1. Check the malfunctioning speakers.

      Table 2. Result

      Result	Proceed to
      Front No. 2 speaker assembly	A
      Front No. 1 speaker assembly	B

   
   
   • AClick here
   • BClick here
3. Click here

   INSPECT FRONT NO. 2 SPEAKER ASSEMBLY

   
   

   1. Temporarily replace the front No. 2 speaker assembly with a new or normally functioning one (Click here).

   2. Check that the malfunction disappears.

      Tip:
      

      • Connect all speaker connectors to the speakers.

      • When there is a possibility that either the right or left speaker is defective, inspect by interchanging the right one with the left one.

      Table 3. Result

      Result	Proceed to
      Malfunction disappears	A
      Malfunction does not disappear	B

   
   
   • AClick here
   • BClick here
4. Click here

   CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - FRONT NO. 2 SPEAKER ASSEMBLY)

   
   

   1. Disconnect the H107 radio and display receiver assembly connector.

   2. Disconnect the H41*1 and/or H42*2 front No. 2 speaker assembly connector.

      *1: for RH Side

      *2: for LH Side

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

      Standard Resistance
      for RH Side
      Tester Connection Condition Specified Condition H107-1 (FR+) - H41-4 (+) Always Below 1 Ω H107-5 (FR-) - H41-2 (-) H107-1 (FR+) - Body ground Always 10 kΩ or higher H107-5 (FR-) - Body ground
      for LH Side
      Tester Connection Condition Specified Condition H107-2 (FL+) - H42-4 (+) Always Below 1 Ω H107-6 (FL-) - H42-2 (-) H107-2 (FL+) - Body ground Always 10 kΩ or higher H107-6 (FL-) - Body ground

   
   
   • OKClick here
   • NGClick here
5. Click here

   INSPECT FRONT NO. 1 SPEAKER ASSEMBLY

   
   
   1. 

      Disconnect the J1*1 and/or K1*2 front No. 1 speaker assembly connector.

      *1: for RH Side

      *2: for LH Side

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

      Standard Resistance
      Tester Connection Condition Specified Condition 1 - 2 Always 4 Ω

   
   
   • OKClick here
   • NGClick here
6. Click here

   CHECK HARNESS AND CONNECTOR (FRONT NO. 2 SPEAKER ASSEMBLY - FRONT NO. 1 SPEAKER ASSEMBLY)

   *1: for RH Side

   *2: for LH Side

   
   

   1. Disconnect the H41*1 and/or H42*2 front No. 2 speaker assembly connector.

   2. Disconnect the J1*1 and/or K1*2 front No. 1 speaker assembly connector.

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

      Standard Resistance
      for RH Side
      Tester Connection Condition Specified Condition H41-3 (TWR+) - J1-1 Always Below 1 Ω H41-1 (TWR-) - J1-2 H41-3 (TWR+) - Body ground Always 10 kΩ or higher H41-1 (TWR-) - Body ground
      for LH Side
      Tester Connection Condition Specified Condition H42-3 (TWL+) - K1-1 Always Below 1 Ω H42-1 (TWL-) - K1-2 H42-3 (TWL+) - Body ground Always 10 kΩ or higher H42-1 (TWL-) - Body ground

   
   
   • OKClick here
   • NGClick here
7. Click here

   INSPECT REAR SPEAKER ASSEMBLY

   
   
   1. 

      Disconnect the L2*1 and/or M2*2 rear speaker assembly connector.

      *1: for RH Side

      *2: for LH Side

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

      Standard Resistance
      Tester Connection Condition Specified Condition 1 - 2 Always 4 Ω

   
   
   • OKClick here
   • NGClick here
8. Click here

   CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - REAR SPEAKER ASSEMBLY)

   
   

   1. Disconnect the H108 radio and display receiver assembly connector.

   2. Disconnect the L2*1 and/or M2*2 rear speaker assembly connector.

      *1: for RH Side

      *2: for LH Side

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

      Standard Resistance
      for RH Side
      Tester Connection Condition Specified Condition H108-1 (RR+) - L2-1 Always Below 1 Ω H108-3 (RR-) - L2-2 H108-1 (RR+) - Body ground Always 10 kΩ or higher H108-3 (RR-) - Body ground
      for LH Side
      Tester Connection Condition Specified Condition H108-2 (RL+) - M2-1 Always Below 1 Ω H108-6 (RL-) - M2-2 H108-2 (RL+) - Body ground Always 10 kΩ or higher H108-6 (RL-) - Body ground

   
   
   • OKClick here
   • NGClick here
9. Click here

   END (FRONT NO. 2 SPEAKER ASSEMBLY IS DEFECTIVE)

10. Click here

    REPAIR OR REPLACE HARNESS OR CONNECTOR

11. Click here

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLYClick here

12. Click here

    REPLACE FRONT NO. 1 SPEAKER ASSEMBLYClick here

13. Click here

    REPAIR OR REPLACE HARNESS OR CONNECTOR

14. Click here

    REPLACE FRONT NO. 2 SPEAKER ASSEMBLYClick here

15. Click here

    REPLACE REAR SPEAKER ASSEMBLYClick here

16. Click here

    REPAIR OR REPLACE HARNESS OR CONNECTOR

17. Click here

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLYClick here