AUDIO AND VISUAL SYSTEM (for Radio Receiver Type) Speaker Circuit

DESCRIPTION

The sound signals amplified by the radio receiver assembly are sent to the speakers from the radio receiver assembly via the speaker circuit.

If there is a short in a speaker circuit, the radio receiver assembly detects it and stops output to the speakers.

Thus sound cannot be heard from the speakers even if there is not a malfunction in the radio receiver assembly or speakers.

INSPECTION PROCEDURE

PROCEDURE

1. Click here

   CHECK HARNESS AND CONNECTOR (SPEAKER CIRCUIT)

   
   

   • *1: for RH Side

   • *2: for LH Side

   
   

   1. Disconnect the H27 and H46 radio receiver assembly connectors.

   2. Disconnect the J4*1 and/or K3*2 front No. 1 speaker assembly connector.

   3. Disconnect the H34*1 and/or H35*2 front No. 2 speaker assembly connector.

   4. for 3 Door:

      Disconnect the Q32*1 and/or R37*2 rear speaker set connector.

   5. for 5 Door:

      Disconnect the L1*1 and/or M1*2 rear speaker set connector.

      Standard Resistance
      Table 1. for 3 Door (RH Side) Tester Connection Condition Specified Condition H46-1 (FR+) - H34-3 (TWR+) Always Below 1 Ω H46-5 (FR-) - H34-1 (TWR-) Always Below 1 Ω H34-4 (+) - J4-1 Always Below 1 Ω H34-2 (-) - J4-2 Always Below 1 Ω H27-1 (RR+) - Q32-1 Always Below 1 Ω H27-3 (RR-) - Q32-2 Always Below 1 Ω H46-1 (FR+) - Body ground Always 10 kΩ or higher H46-5 (FR-) - Body ground Always 10 kΩ or higher H34-4 (+) - Body ground Always 10 kΩ or higher H34-2 (-) - Body ground Always 10 kΩ or higher H27-1 (RR+) - Body ground Always 10 kΩ or higher H27-3 (RR-) - Body ground Always 10 kΩ or higher
      Table 2. for 3 Door (LH Side) Tester Connection Condition Specified Condition H46-2 (FL+) - H35-3 (TWL+) Always Below 1 Ω H46-6 (FL-) - H35-1 (TWL-) Always Below 1 Ω H35-4 (+) - K3-1 Always Below 1 Ω H35-2 (-) - K3-2 Always Below 1 Ω H27-2 (RL+) - R37-1 Always Below 1 Ω H27-6 (RL-) - R37-2 Always Below 1 Ω H46-2 (FL+) - Body ground Always 10 kΩ or higher H46-6 (FL-) - Body ground Always 10 kΩ or higher H35-4 (+) - Body ground Always 10 kΩ or higher H35-2 (-) - Body ground Always 10 kΩ or higher H27-2 (RL+) - Body ground Always 10 kΩ or higher H27-6 (RL-) - Body ground Always 10 kΩ or higher
      Table 3. for 5 Door (RH Side) Tester Connection Condition Specified Condition H46-1 (FR+) - H34-3 (TWR+) Always Below 1 Ω H46-5 (FR-) - H34-1 (TWR-) Always Below 1 Ω H34-4 (+) - J4-1 Always Below 1 Ω H34-2 (-) - J4-2 Always Below 1 Ω H27-1 (RR+) - L1-1 Always Below 1 Ω H27-3 (RR-) - L1-2 Always Below 1 Ω H46-1 (FR+) - Body ground Always 10 kΩ or higher H46-5 (FR-) - Body ground Always 10 kΩ or higher H34-4 (+) - Body ground Always 10 kΩ or higher H34-2 (-) - Body ground Always 10 kΩ or higher H27-1 (RR+) - Body ground Always 10 kΩ or higher H27-3 (RR-) - Body ground Always 10 kΩ or higher
      Table 4. for 5 Door (LH Side) Tester Connection Condition Specified Condition H46-2 (FL+) - H35-3 (TWL+) Always Below 1 Ω H46-6 (FL-) - H35-1 (TWL-) Always Below 1 Ω H35-4 (+) - K3-1 Always Below 1 Ω H35-2 (-) - K3-2 Always Below 1 Ω H27-2 (RL+) - M1-1 Always Below 1 Ω H27-6 (RL-) - M1-2 Always Below 1 Ω H46-2 (FL+) - Body ground Always 10 kΩ or higher H46-6 (FL-) - Body ground Always 10 kΩ or higher H35-4 (+) - Body ground Always 10 kΩ or higher H35-2 (-) - Body ground Always 10 kΩ or higher H27-2 (RL+) - Body ground Always 10 kΩ or higher H27-6 (RL-) - Body ground Always 10 kΩ or higher

   
   
   • OKClick here
   • NGClick here
2. Click here

   INSPECT FRONT NO. 1 SPEAKER ASSEMBLY

   
   

   1. Remove the front No. 1 speaker assembly LH and/or RH (Click here).

   2. Inspect the front No. 1 speaker assembly LH and/or RH (Click here).

   
   
   • OKClick here
   • NGClick here
3. Click here

   CHECK FRONT NO. 2 SPEAKER ASSEMBLY

   
   

   1. Replace the front No. 2 speaker LH and/or RH with a known good one (Click here).

   2. Check that the malfunction disappears.

      Tip:
      

      • Connect all the connectors that were disconnected from the front No. 2 speaker assemblies.

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

      • Perform the above inspection on both LH and RH sides.

      OK
      Malfunction disappears.

   
   
   • OKClick here
   • NGClick here
4. Click here

   INSPECT REAR SPEAKER SET

   
   

   1. Remove the rear speaker set LH and/or RH (Click here).

   2. Inspect the rear speaker set LH and/or RH (Click here).

   
   
   • OKClick here
   • NGClick here
5. Click here

   PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLEClick here

6. Click here

   REPAIR OR REPLACE HARNESS OR CONNECTOR

7. Click here

   REPLACE FRONT NO. 1 SPEAKER ASSEMBLYClick here

8. Click here

   END (FRONT NO. 2 SPEAKER ASSEMBLY IS DEFECTIVE)

9. Click here

   REPLACE REAR SPEAKER SETClick here