Three-way catalytic converter (twc) inspection
Pcm removal/installationMazda 6 Service Manual: Inspection of dtcs for condition detection mode
   Note
	The cruise set indicator light will illuminate for 3 seconds, 
	when condition detection mode is on.
	If the RESUME/ACCEL switch on the cruise control switch is 
	malfunctioning, the cruise set indicator light will not give a correct 
	indication when you inspect the system.
1. Drive ...
   
Mazda 6 Service Manual: Scheduled Maintenance (U.S.A., Canada, and Puerto Rico)
   Follow Schedule 1 if the vehicle is operated mainly where none of the following 
conditions (severe driving conditions) apply.
	Repeated short-distance driving
	Driving in dusty conditions
	Driving with extended use of brakes
	Driving in areas where salt or other corrosive materials are used
 ...