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MFI Control Relay Test

CAUTION: When applying direct battery voltage, ensure voltage is applied to correct terminal; otherwise, relay damage could result.
  1. Remove control relay, located under left side of dashboard, near instrument panel. Using ohmmeter, check resistance between terminals No. 2 and 8 and terminals No. 3 and 8. See Fig 1 . Resistance should be approximately 95 ohms. Check resistance between terminals No. 6 and 7. Resistance should be approximately 35 ohms. Check continuity between relay terminals No. 5 and 7. There should be continuity in one direction only.
  2. Connect 12-volt battery across relay terminals No. 6 (positive) and No. 7 (negative). Continuity should exist between terminals No. 1and 4 until voltage is disconnected.
  3. Connect 12-volt battery across terminals No. 5 and 7, and check continuity between terminals No. 1 and 3. Continuity should exist between terminals No. 1 and 3 until voltage is disconnected. Replace control relay if it fails any test.
Fig 1: Identifying MFI Control Relay Component Connectors
G93E79412Courtesy of HYUNDAI MOTOR CO.
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