Check spark plugs and ignition system
Inspect your spark plugs as described in section 7 and replace them if necessary.
Also check all ignition wiring and components to be sure they are not cracked, worn
or damaged in any way. ...
Knock Sensor (KS) Schematic Diagrams
Circuit Diagram
...
Snowy or icy conditions
To drive your vehicle in deep snow, it may be necessary to use snow tires or
to install tire chains on your tires. If snow tires are needed, it is necessary
to select tires equivalent in size and ty ...