Remove control relay, located under left side of dashboard, near instrument panel. Using an ohmmeter, check continuity between relay terminals No. 1 and No. 4. See Fig 1 . Continuity should not be present. If continuity is present, control relay is defective, replace control relay. If continuity is not present, go to next step.
Check continuity between terminals No. 3 and 8, then No. 2 and 8. Approximately 95 ohms resistance should be present. Check continuity between terminals No. 6 and 7. Approximately 35 ohms resistance should be present. Connect a 12 volt battery across relay terminals No. 6 (positive) and 7 (negative).
Continuity should be present between terminals No. 1 and 4. Disconnect battery from relay. Using ohmmeter check between terminals No. 1 and 2. Continuity should not be present. Check between terminals No. 7 and 5, then reverse leads.
Continuity should exist in one direction only. Connect 12 volt battery across terminals No. 5 and 7. Continuity should be present between terminals No. 1 and 2. If results are not satisfactory, replace control relay.

Fig 1: Identifying Control Relay Terminals (1.5L & 2.4L)

Courtesy of HYUNDAI MOTOR CO.

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.

• Brakes feel soft, pull hard to one side, or make grinding noises.

• The engine overheats, stalls repeatedly, or misfires under load.

• You are missing required tools, torque specs, or safe lifting equipment.

• You are not confident in the next step or safety outcome.

Safety Warning

Control Relay (1.5L & 2.4L)