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Component Inspection

PCV (Positive Crankcase Ventilation) valve check
1. Key "OFF".
2. Disconnect PCV valve.
3. Check the movement of plunger by putting in and out a thin stick.
  
  Fig 1: Checking PCV Operation
  Courtesy of HYUNDAI MOTOR CO.
4. Is the movement of plunger normal?
  YES
  1. Go to " 2 PCSV check" procedure.
  NO
  1. Substitute with a known - good PCV valve and check for proper operation.
    If the problem is corrected, replace PCV valve and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
PCSV check
1. Key "OFF".
2. Disconnect PCSV and vacuum hose.
3. Apply a vacuum by a hand vacuum gauge on PCSV.
4. Does PCSV keep the vacuum condition normally?
  YES
  1. Go to " 3 Injector check" procedure.
  NO
  1. Substitute with a known - good PCSV and check for proper operation.
    If the problem is corrected, replace PCSV and go to "VERIFICATION OF VEHICLE REPAIR " procedure.

Injector check

Key "OFF".
Disconnect injectors.
Check clog on injectors.

Measure the resistance between terminal 1 and 2 of injectors (Component side).

Specification:

TEMPERATURE RESISTANCE SPECIFICATION CHART

Temperature [°C]	Resistance [Ω]
20	14.5 ± 0.7

Fig 2: Measuring Resistance Between Terminal 1 And 2 Of Injectors (Component Side)

G06881453

Courtesy of HYUNDAI MOTOR CO.

Is the measured resistance within specifications?
YES
1. Go to " 4 Sensors related to air/fuel ratio check" procedure.
NO
1. Repair or replace as necessary. And then, go to "VERIFICATION OF VEHICLE REPAIR " procedure.

Sensors related to air/fuel ratio check
1. Check the output data of sensors related to air/fuel ratio (HO2S, MAPS, TPS, ECTS, PCSV, Injectors, etc.) on scan tool. (Refer to each appropriate diagnostic procedure .)
2. Are those sensors normal?
  YES
  1. Substitute with a known - good ECM and check for proper operation.
    If the problem is corrected, replace ECM and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
  NO
  1. Repair or replace as necessary. And then, go to "VERIFICATION OF VEHICLE REPAIR " procedure.