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 unitHorn function
Description
Perform answer-back for each operation with horn.
Component Function Check
1. CHECK FUNCTION
Select HORN in "ACTIVE TEST" mode with CONSULT.
Check the horn (high/low) operation.
Diagnosis Procedure
1. CHECK HORN FUNCTION
Check horn function with horn switch
2. CHECK ...
Exhaust gas (carbon monoxide)
WARNING
Do not breathe exhaust gases; they
contain colorless and odorless carbon
monoxide. Carbon monoxide is dangerous.
It can cause unconsciousness or
death.
If you suspect that exhaust fumes are
entering the vehicle, drive with all windows
fully open, and have the vehicle
in ...
Cooling fan
Removal and Installation
Radiator cooling fan assembly
WARNING:
Do not remove the radiator cap when the engine is hot. Serious burns could occur
from high pressure
coolant escaping from the radiator. Wrap a thick cloth around the radiator cap.
Slowly turn it a quarter
turn to allow ...