Inspection Procedure

1. Check if the component shown by the sub-code is displayed in the check result of the other components.
   1. Check if "01-DC" is output for the other components.
   2. If "01-DC" is output for any other components, check if the same physical address is displayed.

      Result 

      RESULT
      
      

      Result	Proceed to
      "01-DC" is output and same physical address is displayed	A
      "01-DC" is not output or same physical address is not displayed	B

      HINT:

      For the list of the components shown by sub-codes, refer to the table in the step below.

B: Go to step  4

A: Go to next step 

1. Enter the diagnostic mode.
2. Press the "LAN Mon" switch to change to "LAN Monitor" mode.
3. Identify the component which has stored this code.

   Component table: 

   COMPONENT DISPLAY
   
   

   Display	Component
   G/W	Gateway ECU
   DSP-AMP	Stereo component amplifier
   EMV	Multi-display
   AUDIO H/U	Radio receiver
   HINT: "G/W" is the component which has stored this code in the example shown in the illustration.

   Fig 1: Identifying Component Shown By Sub-Code

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Select the component which has stored this code.

   Component table: 

   COMPONENT DISPLAY
   
   

   Component	Proceed to
   Gateway ECU (G/W)	GATEWAY ECU COMMUNICATION ERROR
   Stereo component amplifier (DSP-AMP)	STEREO COMPONENT AMPLIFIER COMMUNICATION ERROR
   Multi-display (EMV)	MULTI-DISPLAY COMMUNICATION ERROR
   Radio receiver (AUDIO H/U)	RADIO RECEIVER COMMUNICATION ERROR

NEXT: END 

1. Clear the DTCs (see DTC CHECK / CLEAR  ).

   HINT:

   If "01 -DC" is output for only one component, this may not indicate a malfunction.

1. Recheck for DTCs and check if the same trouble code occurs again.

   OK: 

   Malfunction disappears. 

NG: Go to step  3

OK: END