1. Verify that the throttle valve is closed.
2. Pull the accelerator cable in the directions of A and B, and measure the free play.
Free play
1.0-3.0 mm {0.04-0.11 in}Tightening torpue 9.8-14.7 N·m {100-150 kgf·cm, 87-130 in·lbf}
Mazda 6 Service Manual: Manually Shifting Down
You can shift gears down by operating the selector lever or the steering shift
switches (some models).
M6 → M5 → M4 → M3 → M2→ M1
Using selector lever
To shift down to a lower gear, tap the selector lever forward (-) once.
Using steering shift switch (Some model ...
Mazda 6 Service Manual: No.8 no cool air
When performing an asterisked (*) troubleshooting inspection, shake the
wiring harness and connectors while performing 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 ...