Toyota RAV4 manuals

Toyota Sienna Service Manual: Master Error

DTC 01-DF Master Error

DESCRIPTION

DTC No.

DTC Detection Condition

Trouble Area

01-DF *1

The device with a display fails and the master is switched to the audio device.

Also when a communication error between sub-master (audio) and master occurs, this code is stored

  • Radio receiver power source circuit
  • AVC-LAN circuit between the radio receiver and the component which has stored this code
  • Radio receiver
  •  Component which has stored this code

HINT: *1: When 210 seconds have elapsed after disconnecting the power supply connector of the master component with the ignition switch in the ACC or ON position, this code is stored.

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

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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