Audio and Visual System

AUDIO / VIDEO: AUDIO AND VISUAL SYSTEM: 01-D6: No Master

DTC 01-D6 - No Master

DTC 01-D7 - Connection Check Error

DESCRIPTION





HINT:
*1: Even if no fault is present, this trouble code 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 engine switch on (ACC) or on (IG), this code is stored.
NOTICE:
- Before starting troubleshooting, be sure to clear DTCs to clear codes stored due to the reasons described in the Hint above. Then, check for DTCs and troubleshoot according to the output DTCs.
- The multi-display or display and navigation module display is the master unit.
- Be sure to clear and recheck for DTCs after the inspection is completed to confirm that no DTCs are output.

WIRING DIAGRAM





INSPECTION PROCEDURE
NOTICE:
Be sure to read the Description before performing the following procedures.
HINT:
If the vehicle has a navigation system, "multi-display" refers to the "display and navigation module display".

PROCEDURE

1. CHECK POWER SOURCE CIRCUIT
(a) w/ Navigation System: Refer to the Display and Navigation Assembly Power Source Circuit Display and Navigation Assembly Power Source Circuit.
(b) w/o Navigation System: Refer to the Multi-display Power Source Circuit Multi-display Power Source Circuit.
NEXT -- Continue to next step.
2. IDENTIFY COMPONENT WHICH HAS STORED THIS CODE





(a) Enter the diagnostic mode.
(b) Press the "LAN Mon" switch to change to "LAN Monitor" mode.
(c) Identify the component which has stored this code.

Component Table





- *1: w/ Wide View Front and Side Monitor System
- *2: w/ SDARS System
- *3: w/ Rear Seat Entertainment System
HINT:
"NAVI" is the component which has stored this code in the example shown in the illustration.

NEXT -- Continue to next step.
3. 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.

Component Table





If the power source circuit is operating normally, proceed to the next step.
- *1: w/ Wide View Front and Side Monitor System
- *2: w/ SDARS System
- *3: w/ Rear Seat Entertainment System

NEXT -- Continue to next step.
4. INSPECT RADIO RECEIVER ASSEMBLY





(a) Disconnect the F1, F23 and F24 receiver connectors.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:






NG -- REPLACE RADIO RECEIVER ASSEMBLY
OK -- Continue to next step.
5. CHECK HARNESS AND CONNECTOR (MULTI-DISPLAY - COMPONENT WHICH HAS STORED THIS CODE)
HINT:
For details of the connectors, refer to Terminals of ECU Pinout Values and Diagnostic Parameters.
(a) 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 -- Continue to next step.
6. REPLACE COMPONENT WHICH HAS STORED THIS CODE
(a) 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.

Result





C -- REPLACE MULTI-DISPLAY ASSEMBLY
B -- REPLACE DISPLAY AND NAVIGATION MODULE DISPLAY
A -- END