Clean throttle plate . How to Clean an Electronic Throttle Body Safely Of course you don't have a IDLE AIR CONTROL valve . You have electronic throttle control .
rough idle is a sign of air /fuel mixture wrong
check for vacuum leaks in all vacuum hoses including those under the dash and the transmission shift actuator
check for loos inlet manifold
it can also be from insufficient fuel pressure all of which will not produce a code
Not having an IAC would only affect idle speed. A rough idle could be a weak coil, or injector among other things. It takes more spark and fuel to fire a cylinder when the engine is cold.
Are you getting a trouble code for any one cylinder ?
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