01-DC

DESCRIPTION

DTC No.	DTC Detection Condition	Trouble Areas
01-DC *1	Transmission to component shown by sub-code failed (Detecting this DTC does not always mean actual failure)	If the same sub-code is recorded in other components, check harness for power supply and communication system of all components shown by code

HINT:

*1: This code may be stored if the engine is started, idled for 60 seconds and then started again.

NOTICE:

1. Be sure to clear and recheck DTCs and perform inspection according to the result to avoid the condition shown in "HINT" above.
   
2. The multi-display is the master unit.
   
3. Be sure to clear and recheck DTCs after the inspection is completed to confirm that no DTCs are output.
   

INSPECTION PROCEDURE

NOTICE:

Be sure to read DESCRIPTION before performing the following procedures.

1. CHECK FOR DTC OF OTHER COMPONENTS

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.

      HINT:

      For the list of the components shown by sub-codes, refer to the table in step 2.

      Result:

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

B	Go to step 4

A

2. IDENTIFY THE COMPONENT WHICH HAS STORED THIS CODE

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 

   Display	Component
   AUDIO H/U (190)	Radio Receiver
   DSP-AMP (440)	Stereo Component Amplifier
   G/W (1C6)	Gateway ECU
   NAVI (178)	Navigation ECU
   CAMERA (280)	Television Camera ECU
   EMV (110)	Multi-display

   HINT:

   "NAVI" is the component which has stored this code in the example shown in the illustration.

NEXT

3. CHECK COMPONENT WHICH HAS STORED THIS CODE

1. Select the component which has stored this code.

   Component Table 

   Component	Proceed to
   Network gateway ECU (G/W)	Gateway ECU communication error (Click here)
   Radio receiver (AUDIO H/U)	Radio receiver communication error (Click here)
   Stereo component amplifier (DSP-AMP)	Stereo component amplifier communication error (Click here)
   Navigation ECU (NAVI)	Navigation ECU communication error (Click here)
   Television camera ECU (CAMERA)	Television camera ECU communication error (Click here)
   Multi-display (EMV)	Multi-display communication error (Click here)

NEXT
END

4. CLEAR DTC

1. Clear the DTC (Click here).

   HINT:

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

NEXT

5. RECHECK DTC

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

OK:

Malfunction disappears.

NG	Go to step 3

OK
END