Mazda MX-5 Miata / Grand Touring. Manual — part 43

Fig. 11: Verifying There Is No Continuity Between Slip Ring & Core
Courtesy of MAZDA MOTORS CORP.

3. Inspect the slip ring surface condition.



If the slip ring surface is rough, use a lathe or fine sandpaper to repair it.

Stator Coil

1. Verify that the continuity is as indicated in Fig. 12 .

2008 Mazda MX-5 Miata Grand Touring

2008 ELECTRICAL Charging System - MX-5 Miata

Fig. 12: Stator Coil Terminal Continuity Check Table
Courtesy of MAZDA MOTORS CORP.

2008 Mazda MX-5 Miata Grand Touring

2008 ELECTRICAL Charging System - MX-5 Miata

Fig. 13: Identifying Stator Coil Terminals
Courtesy of MAZDA MOTORS CORP.



If there is any malfunction, replace the stator.

2. Verify that there is no continuity between the stator coil leads and core using a tester.



If there is continuity, replace the stator coil.

2008 Mazda MX-5 Miata Grand Touring

2008 ELECTRICAL Charging System - MX-5 Miata

Fig. 14: Inspecting Continuity Between Stator Coil Leads And Core
Courtesy of MAZDA MOTORS CORP.

Brush

1. Inspect brushes for wear.



If any brush is worn almost to or beyond the limit, replace all of the brushes.

Generator brush length

Standard: 22.5 mm {0.89 in}

Minimum: 5.0 mm {0.20 in}

2008 Mazda MX-5 Miata Grand Touring

2008 ELECTRICAL Charging System - MX-5 Miata