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

Fig 1: Control Relay Terminal ID (1.5L)

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 Test: 1.5L