When installing a CB, ham radio or car phone in your vehicle, be sure to observe the following precautions; otherwise, the new equipment may adversely affect the engine control system and other electronic parts.
WARNING
Some jurisdictions prohibit the use of cellular phones while driving.
CAUTION
NissanConnectSM Mobile Apps (if so equipped)This vehicle is equipped with Smartphone Integration technology. This allows many compatible Smartphone applications to be displayed and easily controlled through the vehicle's touchscreen. NOTE: ...

WARNING Use a phone after stopping your vehicle in a safe location. If you have to use a phone while driving, exercise extreme caution at all times so full attention may be given to vehicl ...
Diagnosis and repair work flow
Work Flow
OVERALL SEQUENCE
DETAILED FLOW
1.GET INFORMATION FOR SYMPTOM
Get detailed information from the customer about the symptom (the
condition and the environment when
the incident/malfunction occurs).
Check operation condition of the function that is malfunctioning.
>& ...
U1000 CAN COMM
DTC Logic
DTC DETECTION LOGIC
NOTE: U1000 can be set if a module harness was disconnected and
reconnected, perhaps during a repair. Confirm that there are actual CAN
diagnostic symptoms and a present DTC by performing the Self Diagnostic Result
procedure.   ...