Diagnostic procedure

WARNING: This page is about a different car, the 2004 Mazda 3. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: DTC P0301, P0302, P0303, P0304: Diagnostic Procedure Chart (Steps 1-5)

Courtesy of MAZDA MOTORS CORP.

Fig 2: DTC P0301, P0302, P0303, P0304: Diagnostic Procedure Chart (Steps 6-14)

Courtesy of MAZDA MOTORS CORP.

Fig 3: DTC P0301, P0302, P0303, P0304: Diagnostic Procedure Chart (Step 15)

Courtesy of MAZDA MOTORS CORP.