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Meter setup to measure voltage drop:
•
Set the rotary switch to voltage ( ) setting.
•
Press the "DC/AC" button until " " appears on the display.
•
Insert the black lead in the "COM" jack.
•
Insert the red lead in the "
Touch the black test probe to the negative (-) battery post and the red test probe to the positive (+) battery post
to establish the base voltage to compare the test voltage against.
Connect:
•
Black test probe direct to the positive (+) terminal on the starter motor.
•
Red test probe to the positive (+) battery post.
Press the "REC" button (selects the MAX.MIN.AVG function).
Disable the ignition so the engine can't start and crank the engine for four to five seconds.
This connection has four connectors, two wires, and two solenoid connections; a voltage drop of more than
0.8mV indicates a poor circuit.
Clean and inspect the battery, starter cables, solenoid, and cable connections and test again.
A defective starter solenoid may cause an excessive voltage drop. Check the cables and connections before
replacing the solenoid.
NOTE:
Repeat the test after the engine has thoroughly warmed up. Heat expansion may change voltage drop.
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" jack.
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