01-D6

DESCRIPTION

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

HINT:

1. *1: Even if no fault is present, this trouble code may be stored 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 engine switch on (ACC or IG), this code is stored.
   

NOTICE:

1. 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.
   
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

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: 

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

NEXT

4. CHECK RADIO RECEIVER

1. Disconnect the radio receiver connectors.

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

   Standard resistance:

   Tester Connection	Condition	Specified Condition
   ATX+ (J66-5) - ATX- (J66-15)	Always	60 to 80 Ω
   TX+ (J63-9) - TX- (J63-10)	Always	60 to 80 Ω

NG	REPLACE RADIO RECEIVER

OK

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

HINT:

For details of the connectors, refer to "TERMINALS OF ECU" (Click here).

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. 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.
      

      
      

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