U0073 Communication bus a off
DTC Logic
DTC
Trouble diagnosis name
DTC detecting condition
Possible causes
U0073
Control Module Communication
Bus "A" Off
When the ignition switch is ON,
TCM detects a bus-off error
continuously for 2 seconds or
more.
Harness or connector
(CA ...
Parking brake switch
Component Function Check
1.CHECK PARKING BRAKE SWITCH OPERATION
Check that brake warning lamp in combination meter turns ON/OFF when parking
brake is actuated.
Is the inspection result normal?
YES >> Inspection End.
NO >> Proceed to diagnosis procedure. Refer to BRC "Diagno ...