1. Turn the ignition switch to ON (engine OFF).
2. With the brake pedal depressed, verify that there is a "click" at each range when shifted.
3. Verify that the selector lever can be shifted.
4. Verify that there is a "click" at each position when shifted from P position to L range.

5. Verify that the positions of the selector lever and the indicator are aligned.
6. Verify that the vehicle operates in each selected range.
Interlock cable inspection
Selector cable adjustmentMazda 6 Service Manual: Driving Tips
WARNING
Do not let the vehicle move in a direction opposite to the direction selected
by the selector lever: Do not let the vehicle move backward with the selector
lever in a forward position, or do not let the vehicle move forward with the selector
lever in the reverse position. Otherwise, t ...
Mazda 6 Service Manual: Manual Transaxle Shift Pattern
The shift pattern of the transaxle is conventional, as shown.
Depress the clutch pedal all the way down while shifting; then release it slowly.
Your vehicle is equipped with a device to prevent shifting to R (reverse) by mistake. Push the shift lever downward and shift to R.
...