1. Remove the air filter.
2. Inspect the air filter.
Note

Air filter removal/installation
A/c unit removal/installationMazda 6 Service Manual: Traction Control System (TCS)
The Traction Control System (TCS) enhances traction and safety by controlling
engine torque and braking. When the TCS detects driving wheel slippage, it lowers
engine torque and operates the brakes to prevent loss of traction.
This means that on a slick surface, the engine adjusts automatically ...
Mazda 6 Service Manual: Egr valve inspection
Operation Test
Carry out the EGR Control Inspection. (See EGR Control System
Inspection.
If not as specified, perform the further inspection for the EGR valve.
Resistance Inspection
Note
Perform the following test only when directed.
1. Disconnect the negative battery cable.
2. In ...