A cable can pass a low-current resistance test yet lose significant voltage during cranking, fan operation, or charging load.
Why this matters
Tool value depends on the question it can answer safely, the vehicles and systems it truly supports, and the repeatability of the result.
Evidence to capture first
- Load current and operating state
- Voltage across each cable or connection
- Battery terminal voltage and load voltage
- Temperature at suspect joints
A disciplined path
- Choose the real operating load
- Place leads across one section
- Run the load briefly
- Compare both power and ground sides and repair the excessive drop
Decision point
Keep leads clear of moving parts and never select resistance mode on a powered circuit.
Source desk
Use current model-specific service information for specifications, connector locations, disabling procedures, and tightening values. The following public resources support the broader safety or system context used in this guide.
KEEP EXPLORING
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