Check if the treadwear indicators are showing on the tires. Also check the tires for uneven wear, such as excessive wear on one side of the tread. Check the spare tire condition and pressure if not rotated.

The location of treadwear indicators is shown by a “TWI” or “
” marks,
etc., molded into the sidewall of each tire.
Replace the tires if the treadwear indicators are showing on a tire.
Tires
Tire rotationVIN not Programmed or Mismatch - ECM / PCM
DESCRIPTION
DTC P0630 is set when the Vehicle Identification Number (VIN) is not stored
in the Engine Control Module
(ECM) or the input VIN is not accurate. Input the VIN with the intelligent
tester.
MONITOR STRATEGY
TYPICAL ENABLING CONDITIONS
TYPICAL MALFUNCTION THRESHOLDS ...
Symptom simulation
HINT:
The most difficult case in troubleshooting is when no
problem symptoms occur. In such a case, a thorough
problem analysis must be carried out. A simulation of the
same or similar conditions and environment in which the
problem occurred in the customer's vehicle should be
carried out. No ...
Access monitor result
(A) select the following menus on the intelligent tester:
diagnosis, enhanced obdii, monitor info
and monitor result. The monitor status
appears after the component name.
INCMP: The component has not been monitored
yet.
PASS: The component is functioning normally.
FAIL: The component is ...