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

Refer to 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 connector.
   Fig 1: Identifying E40 Radio Receiver Connector

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   E40-5 (ATX+) - E40-15 (ATX-)	Always	60 to 80 Ω

NG → See step   6 

OK: Go to next step 

1. Enter diagnostic mode.
   Fig 2: Service Check Mode Flow Chart - Diagnostic Mode

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

   Component	Physical Address
   Stereo component amplifier	440

   HINT: 

   • "P440" set by the stereo component amplifier is shown in the preceding illustration as an example.
   • 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 Terminals of ECU. Refer to TERMINALS OF ECU .

1. Referring to the following AVC-LAN Wiring Diagram, 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 known good one and check if the same problem occurs again.

   OK

   Malfunction disappears.

NG → REPLACE COMPONENT WHICH HAS STORED THIS CODE 

OK → END