Toyota Sienna Quiz
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Master Reset/ Voice Processing Device ON Error

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Introduction — 55Service specifications — 7Maintenance — 7Engine — 264U151e automatic transaxle — 108Transfer — 19Propeller shaft — 8Drive shaft — 14Differential — 16Axle — 18Suspension — 37Tire and wheel — 54Brake control — 141Parking brake — 16Steering Column — 11Power steering — 18Air conditioning — 106Supplemental restraint system — 146Seat belt — 22Theft deterrent — 14Engine immobiliser — 17Cruise control — 65Lighting — 61Wiper and washer — 13Door lock — 42Meter — 28Audio / visual — 94Navigation — 108Park assist / monitoring — 33Horn — 5Garage door opener — 42GR-FE Engine control system — 126Supplemental restraint system — 147Other system — 14Windshield / windowglass — 43Mirror — 23Instrument panel — 6Seat belt — 22Seat — 92Engine hood / door — 104Exterior — 39Interior — 5Sliding roof — 9Multiplex communication — 18Can communication — 23
8steps
~48min
2/5difficulty
Done 0 of 8

DTC 01-DD Master Reset

DTC 01-E1 Voice Processing Device ON

DESCRIPTION

DTC No.

DTC Detection Condition

Trouble Area
01-DD *1 The device that should be the master has been disconnected after the engine starts.
  • Radio and navigation assembly power source circuit
  • AVC-LAN circuit between the radio and navigation assembly and the component which has stored this code
  • Radio and navigation assembly
  • Component which has stored this code
01-E1 *2 The AMP device records that the AMP output does not function even while the source device is operating.

HINT:

  • *1: This code may be stored if the engine is started and the ignition switch is turned to the 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:

  • Before starting troubleshooting, be sure to clear DTCs to erase codes stored due to the reasons described in the HINT above. Then, check for DTCs and troubleshoot according to the output DTCs.
  • The radio and navigation assembly is the master unit.
  • Be sure to clear and recheck DTCs after the inspection is completed to confirm that no DTCs are output.

INSPECTION PROCEDURE

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

1 CHECK RADIO AND NAVIGATION ASSEMBLY POWER SOURCE CIRCUIT

Refer to the radio and navigation assembly power source circuit.

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

2 INSPECT RADIO AND NAVIGATION ASSEMBLY

INSPECT RADIO AND NAVIGATION ASSEMBLY
  1. Disconnect the radio and navigation assembly connectors.
  2. Measure the resistance according to the value(s) in the table below.

Standard resistance

Standard resistance

3 IDENTIFY THE COMPONENT WHICH HAS STORED THIS CODE

IDENTIFY THE COMPONENT WHICH HAS STORED THIS CODE
  1. Enter the diagnostic mode.
  2. Press the "LAN Mon" switch to change to "LAN Monitor" mode.
  3. Identify the component which has stored this code.

Component Table:

Component Table

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

4 CHECK HARNESS AND CONNECT

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

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

OK: There is no open or short circuit.

CHECK HARNESS AND CONNEC

5 REPLACE RADIO AND NAVIGATION ASSEMBLY

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

OK: Same problem does not occur.

END

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