AUDIO AND VISUAL SYSTEM, Diagnostic DTC:B15C3

DESCRIPTION

This DTC is stored when a malfunction occurs in the speakers.

WIRING DIAGRAM

PROCEDURE

1. CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - BODY GROUND)

   
   

   1. Disconnect the L167 and L166 radio and display receiver assembly connectors.

   2. Disconnect the I2 and I3 front No. 2 speaker assembly connectors.

   3. Disconnect the P3 and Q3 rear speaker assembly connectors.

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

      Standard Resistance

      Tester Connection Condition Specified Condition L167-1 (FR+) - Body ground Always 10 kΩ or higher L167-5 (FR-) - Body ground Always 10 kΩ or higher L167-2 (FL+) - Body ground Always 10 kΩ or higher L167-6 (FL-) - Body ground Always 10 kΩ or higher L166-1 (RR+) - Body ground Always 10 kΩ or higher L166-3 (RR-) - Body ground Always 10 kΩ or higher L166-2 (RL+) - Body ground Always 10 kΩ or higher L166-6 (RL-) - Body ground Always 10 kΩ or higher

   
   

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR

   OK

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

   
   

   1. Disconnect the N1 and O1 front No. 1 speaker assembly connectors.

   2. Disconnect the I2 and I3 front No. 2 speaker assembly connectors.

   3. Measure the resistance between each of the front No. 2 speaker assemblies and body ground to check for a short circuit in the wire harness.

      Standard Resistance
      Tester Connection Condition Specified Condition I2-1 (+) - Body ground Always 10 kΩ or higher I2-3 (-) - Body ground Always 10 kΩ or higher I3-1 (+) - Body ground Always 10 kΩ or higher I3-3 (-) - Body ground Always 10 kΩ or higher

   
   

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR

   OK

3. INSPECT FRONT NO. 1 SPEAKER ASSEMBLY

   
   

   1. Remove the front No. 1 speaker assembly Click here.

   2. 

      Text in Illustration

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

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

      Standard Resistance
      Tester Connection Condition Specified Condition 1 - 2 Always 3.2 to 4.8 Ω

   
   

   NG

   REPLACE FRONT NO. 1 SPEAKER ASSEMBLY Click here

   OK

4. INSPECT FRONT NO. 2 SPEAKER ASSEMBLY

   
   

   1. Remove the front No. 2 speaker assembly Click here.

   2. 

      Text in Illustration

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

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

      Standard Resistance
      Tester Connection Condition Specified Condition 2 (+) - 4 (-) Always 10 kΩ or higher 3 (-) - 4 (-) Always Below 1 Ω 1 (+) - 2 (+) Always Below 1 Ω

   
   

   NG

   REPLACE FRONT NO. 2 SPEAKER ASSEMBLY Click here

   OK

5. REPLACE FRONT NO. 2 SPEAKER ASSEMBLY

   
   

   1. Replace the front No. 2 speaker assembly with a new or known good one Click here.

   2. Clear the DTCs Click here.

   3. Recheck for DTCs and check that no DTCs are output.

      OK
      No DTCs are output.

      Tech Tips

      
      

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

      • When there is a possibility that either the right or left front No. 2 speaker assembly is defective, inspect by interchanging the right one with the left one.

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

   
   

   OK

   END

   NG

6. INSPECT REAR SPEAKER ASSEMBLY

   
   

   1. Remove the rear speaker assembly Click here.

   2. 

      Text in Illustration

      *a	Component without harness connected (Rear Speaker Assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition 1 - 2 Always 3.2 to 4.8 Ω

   
   

   OK

   REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY Click here

   NG

   REPLACE REAR SPEAKER ASSEMBLY Click here