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Home >> Kia >> 2003 >> Rio Base, Automatic >> Repair and Diagnosis >> Electrical >> Starters >> On-Vehicle Testing >> Battery Voltage Drop Test

Battery Voltage Drop Test

NOTE: The voltage drop test will determine if there is excessive resistance in the battery terminal connections or the battery cables. When performing these tests, remember that the voltage drop is giving an indication of the resistance between the two points at which the DVOM (Digital Voltage and Ohm Meter) probes are attached.
  1. Connect the positive lead of the DVOM to the negative battery terminal post.
  2. Connect the negative lead of the DVOM to the negative battery terminal cable clamp.
  3. Turn the ignition switch to START position and observe DVOM. If voltage is detected, correct the poor contact between the cable clamp and the terminal post.
  4. Connect the positive lead of the DVOM to the positive battery terminal post.
  5. Connect the negative lead of the DVOM to the positive battery cable clamp.
  6. Turn the ignition switch to START position and observe DVOM. If voltage is detected, correct the poor contact between the cable clamp and the terminal post.
  7. Connect the voltmeter to measure between the positive battery terminal post and the starter solenoid battery terminal stud.
  8. Turn the ignition switch to START position and observe the DVOM. If the reading is more than 0.2V, clean and tighten the battery cable connection at the solenoid and repeat the test. If the reading is still more than 0.2V, replace the faulty positive battery cable.
  9. Connect the DVOM to measure between the negative battery terminal post and a good clean ground on the engine block.
  10. Turn the ignition switch to START position and observe DVOM. If the reading is more than 0.2V, clean and tighten the battery cable connection on the engine block and repeat the test. If the reading is still more than 0.2V, correct the faulty negative battery cable.
  11. Connect the DVOM positive lead to the starter housing. Connect the DVOM negative lead to the negative battery terminal post.
  12. Turn the ignition switch to START position and observe the DVOM. If the reading is more than 0.2V, correct the poor starter to engine block ground contact.
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