AUDIO AND VISUAL SYSTEM Speaker Circuit

DESCRIPTION

The sound signal that has been amplified by the radio receiver (built-in amplifier) is sent to the speakers from the radio receiver through this circuit.

WIRING DIAGRAM

INSPECTION PROCEDURE

PROCEDURE

1. CHECK HARNESS AND CONNECTOR

   
   

   1. 

      Disconnect the connectors shown in the illustration from the radio receiver, and speakers.

   2. Measure the resistance between the speaker and the radio receiver to check for an open circuit in the wire harness.

      Standard resistance
      Below 1 Ω

   3. Measure the resistance between the speaker and body ground to check for a short circuit in the wire harness.

      Standard resistance
      10 kΩ or higher

   
   

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR

   OK

2. INSPECT FRONT NO.1 SPEAKER

   
   

   1. Resistance check.

      
      

      1. Measure the resistance between the terminals of the speaker.

         Standard resistance
         Approximately 4 Ω

   
   

   NG

   REPLACE FRONT NO.1 SPEAKER

   OK

3. INSPECT REAR SPEAKER

   
   

   1. Resistance check.

      
      

      1. Measure the resistance between the terminals of the speaker.

         Standard resistance
         Approximately 4 Ω

   
   

   NG

   REPLACE REAR SPEAKER

   OK

4. CONFIRM MODEL

   Result
   Result Proceed to 6 Speaker A 4 Speaker B

   
   

   B

   RETURN TO THE ORIGINAL INSPECTION FLOW BECAUSE THE CHECK RESULT IS NORMAL

   A

5. INSPECT ROOF SPEAKER

   
   

   1. Resistance check.

      
      

      1. Measure the resistance between the terminals of the speaker.

         Standard resistance
         Approximately 6 Ω

   
   

   NG

   REPLACE ROOF SPEAKER

   OK

   RETURN TO THE ORIGINAL INSPECTION FLOW BECAUSE THE CHECK RESULT IS NORMAL