Component Inspection

Visual Inspection
1. Visually check HO2S as follow.
  - Contamination, deformation or age of HO2S (B1/S2)
2. Is the HO2S (B1/S2) normal?
  YES
  - Go to step 2.
  NO
  - Substitute with a known-good HO2S (B1S2) and check for proper operation. If the problem is corrected, replace HO2S (B1S2) and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.
Check performance of HO2S
1. Connect scan tool to DLC (Data Link Connector)
2. Warm up the engine to normal operating temperature.
3. Monitor signal waveform of HO2S with scan tool.
  Specification: 0.1-0.9V.
  
  Fig 1: Signal Waveform Graph
  Courtesy of KIA MOTORS AMERICA, INC.
4. Is the HO2S (B1S2) working properly?
  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.
  NOTE: There is a memory reset function on scan tool that can erase optional parts automatically detected and memorized by PCM.
  
  NO
  - Substitute with a known-good HO2S (B1 S2) and check for proper operation. If the problem is corrected, replace HO2S (B1S2) and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.