Component Inspection

Upstream O2 Sensor Inspection 

1. Ignition "OFF"
2. Connect VMI to KDS and set up an oscilloscope as follow (4-channel);

   Channel A (+): Pin No. 3 (V_G) terminal of Upstream O2 Sensor.

   Channel A (-): Pin No. 6 (V_IP) terminal of Upstream O2 Sensor.

   Channel B (+): Pin No. 1 (V_N) terminal of Upstream O2 Sensor.

   Channel B(-): Pin No. 4 (V_RC) terminal of Upstream O2 Sensor.

3. Ignition "ON" & Engine "ON"

   Courtesy of KIA MOTORS AMERICA, INC.

4. Is measured value within specification?

   YES 

   • Carefully re-do this troubleshooting guide steps.
   • If the diagnostics have been performed correctly with no failure found, replace the ECM/PCM and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.
   CAUTION: When replacing the ECM/PCM, the vehicle equipped with the immobilizer must be performed procedure as below.
   [In the case of installing used ECM/PCM]
   

   1. Perform "ECM Neutral mode" procedure with KDS. (Refer to "IMMOBILIZER " in BE group)
   2. After finishing "ECM Neutral mode", perform "Key teaching" procedure with KDS. (Refer to "IMMOBILIZER " in BE group)

   
   [In the case of installing new ECM/PCM]
   Perform "Key teaching" procedure with KDS. (Refer to "IMMOBILIZER " in BE group)