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

Refer to Multi-display Power Source Circuit. Refer to Multi-display 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 Connector Terminals Of Radio Receiver

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   J66-5 (ATX+) - J66-15 (ATX-)	Always	60 to 80 Ω
   J63-9 (TX+) - J63-10 (TX-)	Always	60 to 80 Ω

NG → See step   6 

OK: Go to next step 

1. Enter the diagnostic mode.
   Fig 2: Diagnosis Display - Lan Monitor Screen

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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	Radio receiver
   DSP-AMP	Stereo component amplifier
   G/W	Gateway ECU
   NAVI	Navigation ECU

   HINT: 

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

NEXT: Go to next step 

HINT: 

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

1. Referring to AVC-LAN Wiring Diagram below, check the AVC-LAN circuit between the multi-display and the component which has stored this code.
   1. Disconnect all connectors between the multi-display and the component which has stored this code.
   2. Check for an open or short in the AVC-LAN circuit between the multi-display 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 multi-display with a known good 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