Toyota RAV4 manuals

Toyota Sienna Service Manual: Master Reset/ Voice Processing Device ON Error

DTC 01-DD Master Reset

DTC 01-E1 Voice Processing Device ON Error

DESCRIPTION

DESCRIPTION

HINT:
*1: This code may be stored if the engine is started and the ignition switch is turned to START position again.
*2: Even if no fault is present, this trouble code may be stored depending on the battery condition or engine start voltage.

NOTICE:

INSPECTION PROCEDURE

NOTICE: Be sure to read DESCRIPTION before performing the following procedures.

1 CHECK RADIO RECEIVER POWER SOURCE CIRCUIT

Refer to the radio receiver power source circuit.

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

2 INSPECT RADIO RECEIVER

INSPECT RADIO RECEIVER

  1. Disconnect the radio receiver connector.
  2.  Measure the resistance according to the value(s) in the table below.

Standard resistance

Standard resistance

*1: 10 Speaker System

3 IDENTIFY THE COMPONENT WHICH HAS STORED THIS CODE

  1. Enter the diagnostic mode.

IDENTIFY THE COMPONENT WHICH HAS STORED THIS CODE

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

Component Table

Component Table

HINT:

4 CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - COMPONENT WHICH HAS STORED THIS CODE)

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.  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.

CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - COMPONENT WHICH HAS STORED THIS CODE)

5 REPLACE RADIO RECEIVER

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

OK: Same problem does not occur.

END

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