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 unitPower door lock system
Wiring Diagram
...
Automatic door locks
System Diagram
System Description
DOOR LOCK FUNCTION
The door lock and unlock switch (driver side) is build into power
window main switch.
The door lock and unlock switch (passenger side) is on door trim.
Interlocked with the locking operation of door lock and unlock
switch ...
A-bag branch line circuit
Diagnosis Procedure
WARNING:
Always observe the following items for preventing accidental
activation.
- Before servicing, turn ignition switch OFF, disconnect battery negative
terminal, and wait 3 minutes
or more. (To discharge backup capacitor.)
- Never use unspecified tester or other ...