DTC 01-DF

AUDIO / VISUAL: AUDIO AND VISUAL SYSTEM (w/o Multi-display): 01-DF: Master Error
01-DF - Master Error

DESCRIPTION





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

NOTICE:
* 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.
* The radio receiver is the master unit.
* 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.

PROCEDURE

1. CHECK RADIO RECEIVER POWER SOURCE CIRCUIT

(a) Refer to the radio receiver power source circuit Radio Receiver Power Source Circuit.

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

NEXT -- Continue to next step.

2. INSPECT RADIO RECEIVER ASSEMBLY

(a) Disconnect the L51 and L52 receiver connectors.





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

Standard resistance:





NG -- REPLACE RADIO RECEIVER ASSEMBLY Removal
OK -- Continue to next step.

3. IDENTIFY COMPONENT WHICH HAS STORED THIS CODE

(a) Enter the diagnostic mode.





(b) Press the preset switch "2" to change to "Detailed Information Mode".

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

Component table





HINT
* "440 (Stereo component amplifier)" is the component which has stored this code in the example shown in the illustration.
* For details of the DTC display, refer to the "DTC CHECK/CLEAR" Audio and Visual System (w/o Multi-Display).

NEXT -- Continue to next step.

4. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - COMPONENT WHICH HAS STORED THIS CODE)

HINT
For details of the connectors, refer to the "Terminals of ECU" Audio and Visual System (w/o Multi-Display).

(a) Referring to the AVC-LAN wiring diagram, check the AVC-LAN circuit between the radio receiver and the component which has stored this code.

(1) Check for an open or short in the AVC-LAN circuit between the radio receiver and the component which has stored this code.

OK:

There is no open or short circuit.





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

5. REPLACE RADIO RECEIVER ASSEMBLY

(a) Replace the radio receiver with a normal one and check if the same problem occurs again Removal.

OK:

Same problem does not occur.

NG -- REPLACE COMPONENT WHICH HAS STORED THIS CODE

OK -- END