Posts Tagged: voltage drop testing
How To Diagnose Automotive Wiring Faults Like a Pro
How to Read an Auto Wiring Diagram and Find Electrical Problems Fast Quick Summary If you can read an auto wiring diagram and understand how a circuit is supposed to work, you can diagnose almost any electrical problem. Most wiring faults fall into three categories: 1) A short circuit, 2) An open circuit, or 3) Excessive resistance causing a voltage drop. The key is testing correctly—using proper back probing techniques, voltage drop testing under load, and continuity checks without damaging connectors. Done right, you protect sensitive modules and avoid creating … Read More
Bad Starter or Battery? How to Know for Sure
The Right Way to Diagnose Bad Starter Problems Quick Summary A starter clicks condition can mean low voltage, high resistance, or an internal solenoid failure. Before replacing anything, verify the battery condition and the integrity of the battery cable/terminal connections. Next, perform a voltage drop at the battery and starter connections. Finally, test the control circuit operation. That’s the correct way to diagnose a bad starter Article How to Diagnose a Bad Starter Like a Pro (Before You Replace It) I’ve seen too many perfectly good starters replaced because someone … Read More