DTC 01-DD: Master Reset; DTC 01-E1: Voice Processing Device ON Error: Procedure

Refer to the radio receiver power source circuit. Refer to Radio Receiver Power Source Circuit .

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

NEXT: Go to next step 

1. Disconnect the radio receiver connectors.
   Fig 1: Identifying Radio Receiver Connectors And Terminals

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

   Standard resistance

   Tester Connection	Condition	Specified Condition
   ATX+ - ATX-	Always	60 to 80 Ω
   TXM+ - TXM-	Always	60 to 80 Ω
   TX+ - TX-	Always	60 to 80 Ω

NG → REPLACE RADIO RECEIVER 

OK: Go to next step 

1. Enter the diagnostic mode.
   Fig 2: Identifying Diagnostic Flow Diagram

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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
   Integration control & panel assembly	1D8

   HINT: 

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

NEXT: Go to next step 

HINT: 

For details of the connectors, refer to the "TERMINALS OF ECU". Refer to TERMINALS OF ECU .

1. Referring to the AVC-LAN wiring diagram below, check the AVC-LAN circuit between the radio receiver and the component which has stored this code.
   1. Disconnect all connectors between the radio receiver and the component which has stored this code.
   2. Check for an open or short in the AVC-LAN circuit between the radio receiver and the component which has stored this code.

      OK

      There is no open or short circuit.

      Fig 3: AVC-LAN - Wiring Diagram

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NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Replace the radio receiver with a normal one and check if the same problem occurs again.

   OK

   Same problem does not occur.

NG → REPLACE COMPONENT WHICH HAS STORED THIS CODE 

OK → END