A/T Control system
A/T Control system : component parts location
1. IPDM E/R 2. TCM 3. Transmission range switch
4. A/T unit 5. Output speed sensor 6. Stop lamp switch
7. A/T shift selector 8. Overdrive control switch 9. Combination meter (type B)
A/T Control system : component description
Name
...
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 ...