AUDIO AND VISUAL SYSTEM(for Radio and Display Type), Diagnostic DTC:B1579

DESCRIPTION

The radio and display assembly and amplifier microphone assembly are connected to each other using the microphone connection detection signal lines.

This DTC is stored when the microphone connection detection signal is disconnected.

WIRING DIAGRAM

PROCEDURE

1. INSPECT RADIO AND DISPLAY ASSEMBLY

   
   
   1. 

      Text in Illustration

      *a	Component with harness connected (Radio and Display Assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition F115-19 (MIN-) - Body ground Always Below 1 Ω

   
   

   NG

   REPLACE RADIO AND DISPLAY ASSEMBLY Click here

   OK

2. CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY ASSEMBLY - AMPLIFIER MICROPHONE ASSEMBLY)

   
   

   1. Disconnect the F115 radio and display assembly connector.

   2. Disconnect the F95 amplifier microphone assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition F115-6 (SNS2) - F95-4 (SNS2) Always Below 1 Ω F115-19 (MIN-) - F95-3 (MCO-) Always Below 1 Ω F115-6 (SNS2) - Body ground Always 10 kΩ or higher F115-19 (MIN-) - Body ground Always 10 kΩ or higher

   
   

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR

   OK

3. INSPECT AMPLIFIER MICROPHONE ASSEMBLY

   
   
   1. 

      Text in Illustration

      *a	Component with harness connected (Amplifier Microphone Assembly)

      Remove the amplifier microphone assembly Click here.

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

      Standard Resistance
      Tester Connection Condition Specified Condition 4 (SNS2) - 3 (MCO-) Always Below 1 Ω

   
   

   OK

   REPLACE RADIO AND DISPLAY ASSEMBLY Click here

   NG

   REPLACE AMPLIFIER MICROPHONE ASSEMBLY Click here