Component Inspection

Visual Inspection.
1. IG "OFF"
2. Disconnect HO2S (B1/S2) connector.
3. Check that HO2S (B1S2) is contaminated or damaged by foreign materials.
4. Has a problem been found?
  YES
  - Go to step 2.
  NO
  - Substitute with a known-good HO2S (B1/S2) and check for proper operation.
  - If the problem is corrected, replace HO2S (B1/S2) and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
Check ECM/PCM.
1. IG "OFF".
2. Connect scan tool and Engine "ON".
3. Select simulation function on scan tool.
4. Simulate voltage at terminal 2 of HO2S (B1/S2) signal connector.
  
  Fig 1: Scan Tool Display - Simulate Voltage Of HO2S (B1/S2) Signal Connector
  Courtesy of KIA MOTORS AMERICA, INC.
5. Does the signal value of HO2S (B1/S2) change according to simulation voltage?
  YES
  - Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
  NO
  - Substitute with a known-good ECM/PCM and check for proper operation.
  - If the problem is corrected, replace ECM/PCM and 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 ECM/PCM.
  Before or after testing ECM/PCM on the vehicle, use this function to reuse the ECM/PCM