Mazda 6 Service Manual: On-board diagnostic

Barometric pressure (baro) sensor inspection

Note Perform the following inspection only when directed. The following vacuum values are indicated by relative pressure from the barometric pressure sensor. 1. Connect the SSTs (WDS or eq ...

Foreword

When the customer reports a vehicle malfunction, check the malfunction indicator lamp (MIL) indication and diagnostic trouble code (DTC), then diagnose the malfunction according to following ...

Other materials:

Mazda 6 Service Manual: Fuel Gauge (Without Multiinformation Display)
The fuel gauge shows approximately how much fuel is remaining in the tank when the ignition is switched ON. We recommend keeping the tank over 1/4 full. If the low fuel warning light illuminates or the fuel level is very low, refuel as soon as possible. Refer to Warning Lights. NOTE ...

Mazda 6 Service Manual: Intermittent concern troubleshooting
  Vibration Method 1. If malfunction occurs or becomes worse while driving on a rough road or when engine is vibrating, perform the steps below. Note There are several reasons vehicle or engine vibration could cause an electrical malfunction. Some of the things to check for are: ...