Description
U1300 is indicated when a communication signal malfunction occurs. U1300 is indicated along with DTCs that identify components connected to the AV control unit through communication lines. Determine the possible malfunction cause from the table below.
SELF-DIAGNOSIS RESULTS DISPLAY ITEM

U1255 satellite radio tuner
U1310 AV control unitRear door speaker
Description
The AV control unit sends audio signals to the rear door speakers using the
rear door speaker circuits.
Diagnosis Procedure
1.CONNECTOR CHECK
Check the AV control unit and speaker connectors for the following:
Proper connection
Damage
Disconnected or loose terminals
2.HA ...
Preparation
PREPARATION
Special Service Tool
The actual shape of the tools may differ from those illustrated here.
Commercial Service Tools
...
Display unit
Reference Value
TERMINAL LAYOUT
PHYSICAL VALUES
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