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Elantra & Sonata

  1. Remove control relay. On Elantra, relay is located behind left side of driver's dashboard below instrument panel. On Sonata, relay is located under right side of dashboard, near blower motor housing.
  2. On all models, apply battery voltage across terminals No. 6 (positive) and No. 8 (negative) while checking voltage on terminals No. 1 and 2. See Figure . Battery voltage should exist. Apply battery voltage across terminals No. 7 (positive) and No. 10 (negative) while checking continuity between terminals No. 3 and 4. Continuity should exist.
  3. Apply battery voltage across terminals No. 3 (positive) and No. 9 (negative) while checking voltage between terminals No. 3 and 4. Battery voltage should exist. Replace relay if it fails any test.
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