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Last Modified: 11-27-2007 1.6 C
Service Category: Audio/Visual/Telematics Section: Audio/Video
Model Year: 2008 Model: LX570 Doc ID: RM00000182M038X
Title: AUDIO / VIDEO: AUDIO AND VISUAL SYSTEM: DESCRIPTION (2008 LX570)

DTC

01-DF

Master Error

DESCRIPTION

DTC Code

DTC Detection Condition

Trouble Area

01-DF*

When either condition below is met:

  • The device with a display fails and the master is switched to the audio device.
  • A communication error between the sub-master (radio receiver) and master occurs.
  • Display and navigation assembly power source circuit (w/ Navigation System)
  • Multi-display power source circuit (w/o Navigation System)
  • AVC-LAN circuit between multi-display and component which has stored this code
  • AVC-LAN circuit between multi-display and radio receiver
  • Display and navigation module display (w/ Navigation System)
  • Multi-display assembly (w/o Navigation System)
  • Component which has stored this code

HINT:

*: When 210 seconds have elapsed after disconnecting the power supply connector of the master component with the engine switch on (ACC) or on (IG), this code is stored.

NOTICE:

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

WIRING DIAGRAM

INSPECTION PROCEDURE

NOTICE:

Be sure to read the Description before performing the following procedures.

HINT:

If the vehicle has a navigation system, "multi-display" refers to the "display and navigation module display".

PROCEDURE

1.

CHECK POWER SOURCE CIRCUIT

(a) w/ Navigation System: Refer to the Display and Navigation Assembly Power Source Circuit NAVIGATION / MULTI INFO DISPLAY: NAVIGATION SYSTEM: DESCRIPTION (2008 LX570) .

(b) w/o Navigation System: Refer to the Multi-display Power Source Circuit AUDIO / VIDEO: AUDIO AND VISUAL SYSTEM: DESCRIPTION (2008 LX570) .

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

NEXT

2.

INSPECT RADIO RECEIVER ASSEMBLY


(a) Disconnect the F1, F23 and F24 receiver connectors.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

F1-5 (ATX+) - F1-15 (ATX-)

Always

60 to 80 Ω

F23-9 (TX+) - F23-10 (TX-)

Always

60 to 80 Ω

F24-9 (TXM+) - F24-10 (TXM-)

Always

60 to 80 Ω
OK

3.

IDENTIFY COMPONENT WHICH HAS STORED THIS CODE

(a) Enter the diagnostic mode.

(b) Press the "LAN Mon" switch to change to "LAN Monitor" mode.

(c) Identify the component which has stored this code.

Component Table

Display

Component

AUDIO

Radio receiver

DSP-AMP

Stereo component amplifier

EMVN*1

Display and navigation module display

EMV*2

Multi-display

CAMERA-C*3

Parking assist ECU

XM*4

Stereo component tuner

RSE*5

Television display

*1: w/ Navigation System

*2: w/o Navigation System

*3: w/ Wide View Front and Side Monitor System

*4: w/ SDARS System

*5: w/ Rear Seat Entertainment System

HINT:

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

NEXT

4.

CHECK HARNESS AND CONNECTOR (MULTI-DISPLAY - COMPONENT WHICH HAS STORED THIS CODE)

HINT:

For details of the connectors, refer to Terminals of ECU AUDIO / VIDEO: AUDIO AND VISUAL SYSTEM: TERMINALS OF ECU (2008 LX570) .

(a) Referring to the AVC-LAN wiring diagram, 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.

OK

5.

CHECK HARNESS AND CONNECTOR (MULTI-DISPLAY - RADIO RECEIVER)

HINT:

For details of the connectors, refer to Terminals of ECU AUDIO / VIDEO: AUDIO AND VISUAL SYSTEM: TERMINALS OF ECU (2008 LX570) .

(a) Referring to the AVC-LAN wiring diagram, check the AVC-LAN circuit between the multi-display and the radio receiver.

(1) Disconnect all connectors between the multi-display and the radio receiver.

(2) Check for an open or short in the AVC-LAN circuit between the multi-display and the radio receiver.

OK:

There is no open or short circuit.

OK

6.

REPLACE MULTI-DISPLAY WITH NORMAL ONE AND CHECK

(a) w/ Navigation System: Replace the display and navigation module display with a normal one and check if the same problem occurs again NAVIGATION / MULTI INFO DISPLAY: DISPLAY AND NAVIGATION ASSEMBLY (w/ Navigation System): REMOVAL (2008 LX570) .

(b) w/o Navigation System: Replace the multi-display with a normal one and check if the same problem occurs again AUDIO / VIDEO: MULTI-DISPLAY (w/o Navigation System): REMOVAL (2008 LX570) .

OK:

Same problem does not occur.

OK