Component Inspection

Check HO2S heater
1. Measure resistance between terminal 3 and 4 of sensor connector (To sensor side)
  Specification: 176°C: 8.0~14.0Ω
  
  Fig 1: Measuring Resistance Between Terminal 3 And 4 Of Sensor Connector
  Courtesy of HYUNDAI MOTOR CO.
2. Is measure resistance within Specification?
  YES
  - Substitute with a known good PCM and check for proper operation. If the problem is corrected, replace PCM and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.
  NO
  - Substitute with a known-good HO2S heater and check for proper operation. If the problem is corrected, replace HO2S heater and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.