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Component Inspection

Check PCV
1. IG "OFF".
2. Disconnect PCV.
3. Check that PCV is properly operating.
4. Is the PCV O.K?
  YES
  - Go to " 2Check PCSV" as follows.
  NO
  - Substitute with a known - good PCV and check for proper operation.
    If the problem is corrected, replace PCV and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
Check the PCSV
1. Ignition "OFF".
2. Disconnect PCSV and Vacuum Hose.
3. Apply vacuum on PCSV with Hand Vacuum Gauge.
4. Is the PCSV keeping the Vacuum?
  YES
  - Go to " 3Check Injector" as below.
  NO
  - Substitute with a known-good PCSV and check for proper operation.
    If the problem is corrected, replace PCSV and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.

Check Injector

Ignition "OFF".
Remove Injector.
Check Leakage and clog on Injector.

Measure resistance terminal 1 and 2 of Injector connector (Component side).

TEMPERATURE RESISTANCE SPECIFICATION

Coil Resistance (Ω)	Temp (°C)	Temp (°F)
1.25	20	68

Fig 1: ECM - Circuit Diagram

Courtesy of HYUNDAI MOTOR AMERICA

Is the measured resistance within specifications?
YES
- Go to " 4Check sensors related to Fuel Trim" as below.
NO
- Substitute with a known-good Injector and check for proper operation.
  If the problem is corrected, replace Injector and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.

Check Sensors related to Fuel Trim
1. Check the Input Voltage of Sensors related to Fuel Trim (MAPS, TPS, ECTS, PCSV, Injector, and etc) - Refer to Trouble Shooting Guide -
2. Are the sensors related to Fuel Trim O.K?
  YES
  - Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.
  NO
  - Repair as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.