AUDIO AND VISUAL SYSTEM Radio Receiver Communication Error

INSPECTION PROCEDURE

PROCEDURE

1. Click here

   IDENTIFY COMPONENT SHOWN BY SUB-CODE

   
   
   1. 

      Enter diagnostic mode.

   2. Press preset switch "2" to change the mode to "Detailed Information Mode".

   3. Identify the component shown by the sub-code.

      Tip:
      

      • The sub-code "P190" shown in the above example indicates the radio receiver assembly.

      • For details of the DTC display, refer to DTC Check/Clear (Click here).

   
   
   • NEXTClick here
2. Click here

   CHECK POWER SOURCE CIRCUIT OF COMPONENT SHOWN BY SUB-CODE

   
   

   1. Inspect the power source circuit of the component shown by the sub-code.

      If the power source circuit is operating normally, proceed to the next step.

      Table 1. Component Table

      Component	Proceed to
      Television display assembly (1B0)	Television display power source circuit (Click here)

   
   
   • NEXTClick here
3. Click here

   INSPECT RADIO RECEIVER ASSEMBLY

   
   
   1. 

      Disconnect the radio receiver assembly connectors.

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

      Standard Resistance
      Tester Connection Condition Specified Condition F13-9 (TXM+) - F13-10 (TXM-) Always 60 to 80 Ω

      Table 2. Text in Illustration

      *a	Component without harness connected (Radio Receiver Assembly)

   
   
   • OKClick here
   • NGClick here
4. Click here

   CHECK HARNESS AND CONNECTOR

   Tip:
   

   • Start the check from the circuit that is near the component shown by the sub-code first.

   • For details of the connectors, refer to Terminals of ECU (Click here).

   
   

   1. Referring to the following AVC-LAN wiring diagram, check the AVC-LAN circuit between the radio receiver assembly and component shown by the sub-code.

      
      

      1. Disconnect all connectors between the radio receiver assembly and component shown by the sub-code.

      2. 

         Check for an open or short in the AVC-LAN circuit between the radio receiver assembly and component shown by the sub-code.

         OK
         There is no open or short circuit.

   
   
   • OKClick here
   • NGClick here
5. Click here

   REPLACE COMPONENT SHOWN BY SUB-CODE

   
   

   1. Replace the component shown by the sub-code with a known good one and check if the same problem occurs again.

      OK
      Malfunction disappears.

   
   
   • OKClick here
   • NGClick here
6. Click here

   END

7. Click here

   REPLACE RADIO RECEIVER ASSEMBLYClick here

8. Click here

   REPAIR OR REPLACE HARNESS OR CONNECTOR