DTC    01-D6    No Master

DTC    01-D7    Connection Check Error

for Preparation Click here


DESCRIPTION


DTC No.
DTC Detection Condition
Trouble Area
01-D6
*1
When either of the following conditions is met:
  1. The component which has stored the code has (had) been disconnected when the ignition switch is in the ACC or ON position
  1. The master device has (had) been disconnected when this code is stored
  1. Multi-display power source circuit
  1. Power source circuit of the component which has stored this code
  1. AVC-LAN circuit between the multi-display and the component which has stored this code
  1. Component which has stored this code
  1. Multi-display
01-D7
*2
When either of the following conditions is met:
  1. The component which has stored the code has (had) been disconnected after the engine starts (started)
  1. The master device has (had) been disconnected when this code is (was) stored

HINT:
  1. *1: Even if no failure is detected, a trouble code may be recorded depending on the battery condition or engine start voltage.
  2. *2: 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:
  1. Be sure to clear and recheck DTCs and perform inspection according to the result to avoid the conditions shown in "HINT" above.
  2. The multi-display is the master unit.
  3. 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 MULTI-DISPLAY POWER SOURCE CIRCUIT
Refer to the multi-display power source circuit (Click here).
If the power source circuit is operating normally, proceed to the next step.

NEXT


2.IDENTIFY THE COMPONENT WHICH HAS STORED THIS CODE


    E111829E04

  1. Enter the diagnostic mode.

  1. Press the "LAN Mon" switch to change to "LAN Monitor" mode.

  1. Identify the component which has stored this code.

    Component Table 
    Display
    		Component
    AUDIO H/U
    		Radio Receiver
    DSP-AMP
    		Stereo Component Amplifier
    G/W
    		Gateway ECU
    NAVI
    		Navigation ECU
    CAMERA
    		Television Camera ECU

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


NEXT


3.CHECK POWER SOURCE CIRCUIT OF THE COMPONENT WHICH HAS STORED THIS CODE

  1. Inspect the power source circuit of the component which has stored this code.
    If the power source circuit is operating normally, proceed to the next step.

    Component Table 
    Component
    		Proceed to
    Radio receiver (AUDIO H/U)
    		Radio receiver power source circuit (Click here)
    Stereo Component Amplifier (DSP-AMP)
    		Stereo component amplifier power source circuit (Click here)
    Gateway ECU (G/W)
    		Gateway ECU power source circuit (Click here)
    Navigation ECU (NAVI)
    		Navigation ECU power source circuit (Click here)
    Television Camera ECU (CAMERA)
    		Television camera ECU power source circuit (Click here)


NEXT


4.CHECK RADIO RECEIVER
E110926E01

  1. Disconnect the radio receiver connectors.

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

    Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    ATX+ (R2-5) -
    ATX- (R2-15)
    		Always
    		60 to 80 Ω
    TX+ (R3-9) -
    TX- (R3-10)
    		Always
    		60 to 80 Ω



NG
REPLACE RADIO RECEIVER
OK


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


  1. Referring to the AVC-LAN wiring diagram below, check the AVC-LAN circuit between the multi-display and the component which has stored this code.



    1. 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.

      HINT:
      For details of the connectors, refer to the "Terminals of ECU" (Click here).


      E111828E02



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


6.REPLACE COMPONENT WHICH HAS STORED THIS CODE

  1. Replace the component which has stored this code with a normal one and check if the same problem occurs again.

    OK:
    Same problem does not occur.



NG
REPLACE MULTI-DISPLAY
OK

END