Automotive Technology/Battery and Starting System Diagnosis and Repair

Usually a multimeter tell you battery voltage
 * 1) Perform battery state-of-charge test; determine needed service.

If the battery puts out half of the CCA, then it's considered good
 * 1) Perform battery tests (load and capacitance) determine needed service.

Resetting the clock can be difficult. Resetting a stereo or alarm system is worse. Put in a battery in the Power Jack and have at least nine volts(9v) to keep the modules alive
 * 1) Maintain or restore electronic memory functions.

Observe safety precautions and use this battery charging technique
 * 1) Perform slow/fast battery charge in accordance with manufacturer’s recommendations.

Inspecting for damage takes a moment of your time to do right
 * 1) Inspect, clean, repair and/or replace battery(ies), battery cables, connectors, clamps hold downs, and vent tubes.

Using this battery charging technique
 * 1) Jump-start a vehicle using jumper cables, a booster battery or auxiliary power supply.

Best done with an ammeter
 * 1) Perform starter current draw test; determine needed repairs.

A loss of half a volt is the maximum for a starter draw circuit
 * 1) Perform starter circuit voltage drop tests; determine needed repairs.

Knowing basic starter operation will tell you if the solenoid or motor fails. Otherwise, you should be able to test the relays, wires, and safety switches.
 * 1) Inspect, test, repair and/or replace starter, relays, solenoids, modules, switches, connectors, and wires of starter circuits.

Automotive No Crank Condition
 * 1) Differentiate between electrical and engine mechanical problems that cause a slow crank, no crank, extended cranking, or a cranking noise condition.