Brush and brush holder: Notes

WARNING: This page is about a different car, the 2017 Mazda 3. However, it is still accessible from the selected car via links, so may be relevant.

Verify that there is no continuity between each insulated brush and plate using a tester.

Fig 1: Checking Continuity Between Insulated Brush And Plate Using Tester
Courtesy of MAZDA MOTORS CORP.
- If there is continuity, replace the brush holder.
Measure the brush length.

Fig 2: Brush Length Measurement
Courtesy of MAZDA MOTORS CORP.
- If any brush is worn almost to or beyond the minimum specification, replace all of the brushes.
  Starter brush length
  
  Standard: 12.3 mm {0.484 in}
  
  Minimum: 5.5 mm {0.22 in}
Measure the brush spring force using a spring balance.

Fig 3: Measuring Brush Spring Force Using Spring Balance
Courtesy of MAZDA MOTORS CORP.

If not within the minimum specification, replace the brush and brush holder component.