Mazda 6 Service Manual: No.13 knocking/pinging-acceleration/cruise

No.12 lack/loss of power-acceleration/cruise

No.14 poor fuel economy

Other materials:

Mazda 6 Service Manual: Side air bag sensor removal/installation
Warning Handling the side air bag sensor improperly can accidentally deploy the side air bag module, which may seriously injure you. Read AIR BAG SYSTEM SERVICE WARNINGS before handling the side air bag sensor. (See SERVICE WARNINGS.) 1. Turn the ignition switch to LOCK position. 2. ...

Mazda 6 Service Manual: Front door speaker inspection
1. Inspect for resistance between the front door speaker terminals using an ohmmeter. If not as specified, replace the front door speaker. 2. To verify that the front door speaker outputs sound, apply voltage to the front door speaker and release using a 1.5-V battery. If not outp ...