Mazda 6 Service Manual: No.9 abnormal shifting

No.8 does not shift to fourth gear (4gr)

No.10 frequent shifting

Other materials:

Mazda 6 Service Manual: Air intake actuator inspection
1. Connect battery positive voltage to terminal D or F and ground to terminal F or D of the air intake actuator. 2. Verify that the air intake actuator operates as shown below. If not as specified, replace the air intake actuator. ...

Mazda 6 Service Manual: Battery Maintenance
To get the best service from a battery: Keep it securely mounted. Keep the top clean and dry. Keep terminals and connections clean, tight, and coated with petroleum jelly or terminal grease. Rinse off spilled electrolyte immediately with a solution of water and baking soda. If th ...