Free PDF guide
Battery, Alternator and Starter: Tests and Voltages
Normal voltages and multimeter tests to tell whether the battery, alternator, starter or wiring is at fault.
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- Available in English and Spanish
Battery, alternator, starter or wiring? With a multimeter and this guide you will know in minutes. It includes a visual voltage scale, the battery state-of-charge chart and how to remove the surface charge so you do not get fooled.
It also explains the alternator and ripple test, voltage drop testing with a drawing of where to put the probes, how to find a parasitic draw and what to check by symptom when the engine will not crank.
What the guide covers
- Voltage scale: resting, charging and cranking
- Battery state of charge
- Battery and alternator tests
- Voltage drop and parasitic draw
- The engine will not start: what to check by symptom
- Related codes
