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

1. Refer to Radio Receiver Power Source Circuit .

   If the power source circuit is operating normally, proceed to the next step 2.

NEXT: Go to next step 

1. Disconnect the E62 receiver connector.
   Fig 1: Identifying E62 Radio Receiver Connector Terminals

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

   Standard Resistance

   Tester Connection	Specified Condition
   5 (ATX+) - 15 (ATX-)	60 to 80 Ω

NG → REPLACE RADIO RECEIVER ASSEMBLY 

OK: Go to next step 

1. Enter the diagnostic mode.
   Fig 2: Diagnostic Mode - Service Check Mode And Detailed Information Mode

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2. Press the preset switch "2" to change to "Detailed Information Mode".
3. Identify the component which has stored this code.
   COMPONENT TABLE:
   
   

   Component	Physical address
   Stereo component amplifier	440

   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 .

NEXT: Go to next step 

HINT: 

For details of the connectors, refer to the 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. 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: Identifying 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