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.
  •  A communication error between sub-master (radio receiver) and master occurs
  • Radio and navigation assembly power source circuit
  •  AVC-LAN circuit between the radio and navigation assembly and the component which has stored this code
  •  AVC-LAN circuit between the radio and navigation assembly and the radio receiver
  •  Radio and navigation assembly
  •  Component which has stored this

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 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 CONNECTOR

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.
  1.  Disconnect all connectors between the radio and navigation assembly and the component which has stored this code.
  2.  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 CONNECTOR

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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