Mazda CX-9 Grand Touring 2007 Manual page 815

Fig. 14: Inspecting Continuity Between Terminal S And Body Using Tester
3. Verify that there is no continuity between terminals M and B using a tester.
If there is continuity, replace the magnetic switch.
Fig. 15: Checking Continuity Between Terminals M And B Using Tester
Brush and brush holder
1. Verify that there is no continuity between each insulated brush and plate using a tester.
If there is continuity, replace the brush holder.
Fig. 16: Checking Continuity Between Insulated Brush And Plate Using Tester
2. Measure the brush length.
If any brush is worn almost to or beyond the minimum specification, replace all of the brushes.
Starter brush length
Standard: 12.3 mm {0.48 in}
Minimum: 5.5 mm {0.22 in}
2007 Mazda CX-9 Grand Touring
2007 ENGINE Starting System (MZI-3.5) - CX-9