Mike's Workshop Manuals: Service manuals for every vehicle
Home >> Kia >> 2003 >> Spectra Base, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Diagnostic Tests >> DTC P0130, DTC P0131, DTC P0132 &/Or DTC P0134 >> Test Procedure

Test Procedure

  1. Turn ignition off. Connect Hi-Scan Pro/Kia Data Pro Scan tool or equivalent to OBD-II Data Link Connector. See Figure . Turn ignition on. Monitor for other DTCs. If DTCs related to any misfire, Purge Control Solenoid Valve (PCSV), Mass Air Flow (MAF) sensor or HO2S heater codes are set, do all repairs associated with those DTCs before continuing with this procedure. If no other DTCs are set, go to next step.
  2. Start engine. Allow engine to idle until reaches normal operating temperature for more than 10 minutes. Using Hi-Scan Pro/Kia Data Pro Scan tool, monitor front HO2S voltage signal waveform. See Figure . If front HO2S voltage signal switches from lean to rich or rich to lean over 6 times for 10 seconds. Problem is intermittent, check front HO2S and ECM for proper harness connections and go to step  8 . If voltage signal waveform is not as specified, go to next step.
  3. Turn ignition off. Disconnect front HO2S 4-pin harness connector. See Figure and ECM 81-pin harness connector. See Figure . Measure resistance between front HO2S connector terminal No. 2 (Green/Blue wire) and ECM connector terminal No. 36. Also measure resistance between front HO2S connector terminal No. 4 (Green/Brown wire) and ECM connector terminal No. 18. Both resistances should be below one ohm. If resistances are as specified, go to next step. If any resistance is not as specified, repair open or short circuit as necessary and go to step  8 .
  4. With front HO2S and ECM harness connector disconnected. Measure voltage between ground and front HO2S connector terminal No. 4 (Green/Brown wire). Voltage should be below 0.5 volt. If voltage is specified, go to next step. If voltage is not as specified, repair open or short circuit as necessary and go to step  8 .
  5. With front HO2S and ECM harness connector disconnected. Measure resistance between ground and front HO2S connector terminal No. 4 (Green/Brown wire). Also measure resistance between front HO2S connector terminal No. 2 (Green/Blue wire) and No. 4 (Green/Brown wire). Both resistances should be infinite. If resistances are as specified, go to next step. If any resistance is not as specified, repair short circuit as necessary and go to step  8 .
  6. Remove front HO2S from vehicle, check front HO2S for contamination, deterioration or damage. If front HO2S is contaminated, deteriorated or damage, replace front HO2S and go to next step. If front HO2S seems okay, temporarily install a known good front HO2S and check for proper operation. If problem is corrected, replace front HO2S and go to step  8 .
  7. Return vehicle to original condition. Start engine. Thoroughly check exhaust system for leaks (specially between Warm-up Catalytic Converter and front exhaust pipe). If exhaust leak is found, repair as necessary and go to next step. If exhaust leak is not found, go to next step.
  8. After repair, return vehicle to original condition. Clear codes using Hi-Scan Pro/Kia Data Pro Scan tool or equivalent. Verify repairs by driving vehicle and monitoring for pending codes. If DTC is set during test drive, follow appropriate DTC test procedure.
scientia non olet · About Mike's Workshop Manuals