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Starters: Diagnosis Kia Optima I

Starter 1 illustration ~370 words

TROUBLE SHOOTING

Note. See TROUBLE SHOOTING article in GENERAL INFORMATION.

ON-VEHICLE TESTING

Note. Before testing, ensure battery is fully charged, battery cables and terminals are clean and tight, and engine grounds are okay.

CIRCUIT TEST

  1. If starter does not operate, check voltage at starter solenoid "S" terminal with ignition switch in START position, transmission in Park or Neutral (A/T) or clutch depressed (M/T). (Scheme 6) If battery voltage is present, replace starter. If battery voltage is not present, check ignition switch, transmission range switch (A/T), clutch pedal position switch (M/T) and wiring.
  2. If starter motor runs and engine does not crank, remove starter for visual inspection and testing. Inspect flywheel and ring gear for damaged or missing teeth.

Scheme 6

Scheme 6
Scheme 6

ARMATURE TEST

  1. Using ohmmeter, check continuity between commutator and core. If continuity exists, replace armature. Check for continuity between commutator and shaft. If continuity exists, replace armature.
  2. Place armature on "V" blocks. Using a dial indicator, measure runout at commutator. Normal runout is .002" (.05 mm). Maximum runout is .016" (.4 mm). If runout is not within specification, resurface commutator or replace armature.
  3. Wipe commutator clean. Measure commutator outer diameter. See «STARTER SPECIFICATIONS»(ref-99681-S15594706812001072600000) . If commutator is at, or less than limit, replace armature. Check depth of mold between commutator segments. Normal depth is .02-.03" (.5-.8 mm). Minimum depth is .008" (.2 mm). Replace armature if depth of mold is at, or less than minimum.

BRUSH & BRUSH HOLDER TEST

Note. Optima & Magentis (Canadian) incorporates wear mark on brush. If brush length is at wear mark or wear mark is no longer visible, replace all brushes.

FIELD COIL TEST

Using ohmmeter, check for continuity between starter solenoid "M" terminal wire and brushes. If continuity does not exist, replace field coil assembly. Check for continuity between "M" terminal wire and field coil. If continuity exists, replace field coil assembly. Check field coil for looseness. If field coil is loose, replace field coil assembly.

SOLENOID TEST

Using ohmmeter, check for continuity between starter solenoid "S" and "M" terminals. (Scheme 6) Check for continuity between "S" terminal and solenoid body. If continuity does not exist, replace solenoid. Check for continuity between "M" and "B" terminals. If continuity exists, replace solenoid.

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