Operation CHARM: Car repair manuals for everyone.

Performance Test

CAUTION: Each test must be performed within 3 - 5 seconds to avoid coil from burning.

Pull-in Test




Connect battery to magnetic switch as shown.
Check that plunger and pinion move outward.
If plunger and pinion don't move, replace magnetic switch.

Hold-in Test




While connected with plunger out, disconnect negative lead from terminal "M".
Check that plunger and pinion remain out.
If plunger and pinion return inward, replace magnetic switch.

Plunger and Pinion Return Test




Disconnect negative lead from switch body.
Check that plunger and pinion return inward.
If plunger and pinion don't return, replace magnetic switch.

No-Load Performance Test




1. Connect battery and ammeter to starter as shown.
2. Check that starter rotates smoothly and steadily with pinion moving out. Check that ammeter indicates specified current.