01-DD

DESCRIPTION

DTC No.	DTC Detection Condition	Trouble Area
01-DD	The device that should be the master has been disconnected after the engine starts.	Multi-display power source circuit AVC-LAN circuit between the multi-display and the component which has stored this code Multi-display Component which has stored this code
01-E1 *1	The AMP device records that the AMP output does not function even while the source device is operating.

HINT:

*1: Even if no fault is present, this trouble code may be stored depending on the battery condition or engine start voltage.

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. INSPECT 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

3. 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

4. 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

5. REPLACE MULTI-DISPLAY

1. Replace the multi-display with a normal one and check if the same problem occurs again.

   OK:

   Same problem does not occur.
   

NG	REPLACE COMPONENT WHICH HAS STORED THIS CODE

OK
END