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 conditions shown in the "HINT" above.
   
2. The radio receiver 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.

      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

HINT:

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

B	Go to step 4

A

2. IDENTIFY THE COMPONENT WHICH HAS STORED THIS CODE

1. Enter the diagnostic mode.
   

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

3. Identify the component which has stored this code.

   Component Table 

   Component	Physical address
   Gateway ECU	1C6
   Stereo Component Amplifier	440
   Radio receiver	190

HINT:

1. The "440 (stereo component amplifier)" is the component which has stored this code in the example shown in the illustration.
   
2. For details of the DTC display, refer to the "DTC CHECK/CLEAR" (Click here).
   

NEXT

3. CHECK COMPONENT WHICH HAS STORED THIS CODE

1. Select the component which has stored this code.

   Component Table 

   Component	Proceed to
   Gateway ECU	Gateway ECU communication error (Click here)
   Stereo Component Amplifier	Stereo component amplifier communication error (Click here)
   Radio receiver	Radio receiver 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 the DTC and check if the same trouble code occurs again.

   OK:

   Malfunction disappears.
   

NG	Go to step 3

OK
END