Monitor Current Data

Connect GDS to Data Link Connector (DLC).
Warm up the engine to operating temperature.
Select the "Current Data" of the GDS and check the relevant items as follows.
Are the results normal?

Courtesy of HYUNDAI MOTOR AMERICA

(If the measurement of the low voltage is too diminutive, check the low-pressure fuel line first.)
Are the results normal?
YES
- Check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage.
NO
- Repair or replace relevant component(s) as necessary.