How do states use OBD II for emission inspections?

Many states connect a computer directly to a vehicle's OBD II system. The inspector can then read "faults." In some states, this type of inspection has replaced the tailpipe emission test.
See also:
Connecting a device to the A/V-AUX socket
The A/V-AUX socket is located under the center armrest in the tunnel console
1. Connect the device's video cable to the
yellow connector.
2. Connect the left audio cable to the white
connector ...
Engine compartment
1 Brake fluid reservoir
2 Relay/fuse box
3 Air cleaner
4 Radiator
5 Dipstick-engine oil
6 Filler cap-engine oil
7 Washer fluid reservoir
8 Power steering fluid reservoir
9 Expansion tank-coo ...
Disabling the remote control (front)
The IR transceiver for the front screen can be
switched off, which means that the remote
control cannot be used on the front screen.
This function can be activated under RSE
settings
Disabl ...
