DTC 01-D7

AUDIO / VIDEO: AUDIO AND VISUAL SYSTEM (w/o Navigation System): 01-D6,01-D7: No Master
01-D7 - Connection Check Error

DESCRIPTION





HINT
* *1: Even if no fault is present, this DTC may be stored depending on the battery condition or engine start voltage.
* *2: When 210 seconds have elapsed after disconnecting the power supply connector of the master component with the power switch on (IG) or (ACC), this DTC is stored.

NOTICE:
* Before starting troubleshooting, be sure to clear the DTCs stored due to the reasons described in the HINT above. Then, check for DTCs and troubleshoot according to the output DTCs.
* The radio receiver assembly is the master unit.
* Be sure to clear and recheck for the 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 procedure.

PROCEDURE

1. CHECK RADIO RECEIVER ASSEMBLY POWER SOURCE CIRCUIT

HINT
Refer to 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. IDENTIFY COMPONENT WHICH HAS STORED THIS CODE

(a) Enter diagnostic mode.





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

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

Component Table





HINT
* "P440" set by the stereo component amplifier assembly shown in the preceding illustration as an example.
* For details of the DTC display, refer to DTC Check/Clear Audio and Visual System (w/o Navigation System).

NEXT -- Continue to next step.

3. CHECK COMPONENT SHOWN BY SUB-CODE

(a) Select the component shown by the sub-code.

HINT
The satellite radio tuner is built into the radio receiver assembly. If there is a problem between the satellite radio tuner and radio receiver assembly, replace the radio receiver assembly.

Component Table





B -- REPLACE RADIO RECEIVER ASSEMBLY Removal
A -- Continue to next step.

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

(a) 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





NEXT -- Continue to next step.

5. INSPECT RADIO RECEIVER ASSEMBLY

(a) Disconnect the radio receiver assembly connectors.





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

Standard Resistance:





Text in Illustration





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

6. CHECK HARNESS AND CONNECTOR

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

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

(1) Disconnect all connectors between the radio receiver assembly and component which has stored this code.

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

7. REPLACE COMPONENT WHICH HAS STORED THIS CODE

(a) Replace the component which has stored this code with a known good one.

NEXT -- Continue to next step.

8. CLEAR DTC

(a) Clear the DTCs Audio and Visual System (w/o Navigation System).

NEXT -- Continue to next step.

9. RECHECK FOR DTC

(a) Recheck for DTCs and check if the same problem occurs again.

OK:

Malfunction disappears.

NG -- REPLACE RADIO RECEIVER ASSEMBLY Removal

OK -- END