1. With the vehicle parked, pull the release handle to unlock the hood.

2. Insert your hand into the hood opening, slide the latch lever to the right, and lift up the hood.

NOTE
The lever is located a little to the left of center when facing the vehicle.
3. Grasp the support rod in the padded area and secure it in the support rod hole indicated by the arrow to hold the hood open.

Hood
Closing the HoodMazda 6 Owners Manual: Pcv valve inspection
1. Disconnect the negative battery cable.
2. Remove the intake maniforld.(see INTAKE-AIR SYSTEM REMOVAL/INSTALLATION.)
3. Remove the PCV valve.
4. Blow through the valve and verify that air flows as specified.
If not as specified, replace the PCV valve.
Specification
...
Mazda 6 Owners Manual: No. 1 one or more on-board diagnostic functions inoperative
When performing an asterisked (*) troubleshooting inspection, shake the
wiring harness and connectors while doing the inspection to discover whether
poor contact points are the cause of any intermittent malfunctions. If there
is a problem, check to make sure connectors, terminals and wir ...