MPI Control Relay (Sonata V6)
- Remove control relay, located under right side of dashboard, near blower motor housing. Apply battery voltage across terminals No. 6 (positive) and No. 8 (negative) while checking voltage on terminals No. 1 and 2. See Fig 1
. Replace relay if battery voltage does not exist.
- Apply battery voltage across terminals No. 7 (positive) and No. 10 (negative) while checking continuity between terminals No. 3 and 4. Replace relay if continuity does not exist.
- Apply battery voltage across terminals No. 3 (positive) and No. 9 (negative) while checking voltage on terminal No. 4. Replace relay if battery voltage does not exist.
Courtesy of HYUNDAI MOTOR CO.
- Disconnect ECM connector. Turn ignition on. Using DVOM, measure voltage between ECM harness connector terminal No. 6 (10-pin connector) and vehicle ground. If voltage is less than battery voltage, inspect and repair circuit as needed.
- Disconnect control relay harness connector. Using DVOM, measure voltage between control relay harness connector terminal No. 6 (White/Blue wire) and vehicle ground. If voltage is less than battery voltage, inspect and repair circuit as needed.
- Turn ignition off. Using ohmmeter, check resistance between control relay harness connector terminal No. 8 (Black) and ECM harness connector terminals No. 16 and 17 (18-pin connector). See Figure
. If continuity does not exist, inspect and repair circuits as needed.
- Using ohmmeter, check resistance between control relay harness connector terminal No. 1 (Black/Red wire) and ECM harness connector terminals No. 4 and 9 (18-pin connector). See Figure
. If continuity does not exist, inspect and repair circuits as needed.