U1300 AV comm circuit
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 DISPL ...
Shifting
After starting the engine, fully depress the brake
pedal and move the shift lever from P (Park) to
any of the desired shift positions.
WARNING
Apply the parking brake if the shift lever is
in any position while the engine is not
running. Failure to do so could cause the
vehicle to move unexpe ...
P0172, P0175 fuel injection system function
DTC Logic
DTC DETECTION LOGIC
With the Air/Fuel Mixture Ratio Self-Learning Control, the actual mixture
ratio can be brought closely to the
theoretical mixture ratio based on the mixture ratio feedback signal from A/F
sensor 1. The ECM calculates
the necessary compensation to correct the o ...