Inspection Procedure

1. Connect a Hi-Scan (Pro) to the data link connector.
2. Start engine and warm up the vehicle until the cooling operates.

Does scan tool display DTC P0132?

1. Yes:  Go to next step.
2. No: Problem is intermittent or was repaired and ECM memory was not cleared. See INTERMITTENT PROBLEM INSPECTION PROCEDURE ..

1. Turn ignition switch to OFF position, and then disconnect HO2S and ECM connector.
2. Measure resistance between terminal 1 of the HO2S harness connector and chassis ground.
3. Measure resistance between terminal 2 of the HO2S harness connector and chassis ground.
4. Measure resistance between terminal 3 of the HO2S harness connector and chassis ground.
5. Measure resistance between terminal 4 of the HO2S harness connector and chassis ground.

   Specification (Voltage): below 0.5V

Is each resistance within specification?

Fig 1: Checking For Short To Ground In Harness

Courtesy of KIA MOTORS AMERICA, INC.

1. Yes:  Go to next step.
2. No: Repair short to chassis ground in harness.
3. VISUALLY CHECK HO2S
   1. Remove HO2S.
   2. Thoroughly check HO2S for contamination, deterioration or damage.

   Is HO2S contaminated, deteriorated or damaged?

   1. No:  Go to next step.
   2. Yes: Clean or replace HO2S.

1. Install a well-known good HO2S.
2. Connect a Hi-Scan (Pro) to the data link connector.
3. Start engine and warm up the vehicle until the cooling operates.

Does scan tool display DTC P0132?

1. Yes:  Proceed with ECM PROBLEM INSPECTION PROCEDURE .
2. No: Replace HO2S.