AUDIO AND VISUAL SYSTEM (w/o Navigation System) Radio Receiver Communication Error

WIRING DIAGRAM

INSPECTION PROCEDURE

PROCEDURE

1. IDENTIFY COMPONENT SHOWN BY SUB-CODE

   
   

   1. Enter the diagnostic mode.

      

   2. Press the preset switch "channel 3" to change to "Detailed Information Mode".

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

      Tech Tips

      
      

      • "190 (radio receiver assembly)" is the component shown by the sub-code in the example shown in the illustration.

      
      

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

   
   

   NEXT

2. CHECK COMPONENT SHOWN BY SUB-CODE

   
   

   1. Select the component which has stored this code.

      Tech Tips

      The "Bluetooth" handsfree module is built into the radio receiver assembly. If there is a problem between the "Bluetooth" handsfree module and radio receiver assembly, replace the radio receiver assembly.

      Component Table

      Component	Proceed to
      Except "Bluetooth" handsfree module and satellite radio tuner	A
      "Bluetooth" handsfree module (19D) (w/o Accessory Meter)	B
      "Bluetooth" handsfree module (19D) (w/ Accessory Meter)	C

   
   

   B

   REPLACE RADIO RECEIVER ASSEMBLY Click here

   C

   REPLACE RADIO RECEIVER ASSEMBLY Click here

   A

3. CHECK POWER SOURCE CIRCUIT OF COMPONENT SHOWN BY SUB-CODE

   
   

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

      Tech Tips

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

      Component Table

      Component	Proceed to
      Stereo component amplifier assembly (440)*	Stereo Component Amplifier Power Source Circuit Click here
      Multi-media interface ECU (388)	Multi-media Interface ECU Power Source Circuit Click here

      
      

      • *: for 9 Speakers

   
   

   NEXT

4. INSPECT RADIO RECEIVER ASSEMBLY

   
   
   1. 

      Text in illustration

      *A	for 9 Speakers

      Disconnect the H38* and H36 radio receiver assembly connectors.

      
      

      • *: for 9 Speakers

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

      Standard Resistance
      Tester Connection Condition Specified Condition H38-5 (ATX+) - H38-15 (ATX-)* Always 60 to 80 Ω H36-9 (TXM+) - H36-10 (TXM-) Always 60 to 80 Ω

      
      

      • *: for 9 Speakers

      Result

      Result	Proceed to
      OK	A
      NG (w/o Accessory Meter)	B
      NG (w/ Accessory Meter)	C

   
   

   B

   REPLACE RADIO RECEIVER ASSEMBLY Click here

   C

   REPLACE RADIO RECEIVER ASSEMBLY Click here

   A

5. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - COMPONENT SHOWN BY SUB-CODE)

   Tech Tips

   
   

   • 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 wiring diagram below, check the AVC-LAN circuit between the radio receiver assembly and the component shown by the sub-code.

      
      

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

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

         OK
         There is no open or short circuit.

   
   

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR

   OK

6. REPLACE COMPONENT SHOWN BY SUB-CODE

   
   

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

      OK
      The same problem does not occur.

      Result

      Result	Proceed to
      OK	A
      NG (w/o Accessory Meter)	B
      NG (w/ Accessory Meter)	C

   
   

   B

   REPLACE RADIO RECEIVER ASSEMBLY Click here

   C

   REPLACE RADIO RECEIVER ASSEMBLY Click here

   A

   END