LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Kia >> 2005 >> Spectra5 2.0 2, Standard >> Repair and Diagnosis >> Engine Performance >> System >> DTC Troubleshooting Procedures - 2.0L >> Troubleshooting For DTC >> DTC P0198: Engine Oil Temperature Sensor Circuit High Input >> Inspection Procedure
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Inspection Procedure

  1. CHECK OTS AND ECM CONNECTORS 

    Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. See CONNECTOR INSPECTION PROCEDURE .

    Are all connectors good?

    1. Yes:  Go to next step.
    2. No: Repair or replace it.
  2. CHECK OTS RESISTANCE 
    1. Turn ignition switch to OFF and disconnect OTS connector.
    2. Measure resistance between the terminals 1 and 2 of OTS connector.

      Specification (OTS resistance):

      Fig 1: OTS Resistance Chart
      G01820643Courtesy of KIA MOTORS AMERICA, INC.
      Fig 2: Checking OTS Resistance
      G01820644Courtesy of KIA MOTORS AMERICA, INC.

    Is resistance within specification?

    1. Yes:  Go to next step.
    2. No: Replace OTS.
  3. CHECK REFERENCE VOLTAGE TO OTS 
    1. Turn ignition switch to OFF position and disconnect OTS connector.
    2. Turn ignition switch to ON position.
    3. Measure voltage between terminal 1 of the OTS harness connector and chassis ground.

      Specification (Voltage): approximately 5V

      Fig 3: Checking OTS Reference Voltage
      G01820645Courtesy of KIA MOTORS AMERICA, INC.

    Is voltage within specification?

    1. Yes:  Go to next step.
    2. No: Repair open or short to chassis ground in harness.
  4. CHECK FOR OPEN IN HARNESS 
    1. Turn ignition to OFF position, and then disconnect OTS and ECM connector.
    2. Measure resistance between terminal 1 of the OTS harness connector and 76 of the ECM harness connector.
    3. Measure resistance between terminal 2 of the OTS harness connector and 56 of the ECM harness connector.

      Specification (Resistance): below 1Ω

      Fig 4: Checking For Open In Harness
      G01820646Courtesy of KIA MOTORS AMERICA, INC.

    Does each resistance indicate continuity?

    1. Yes:  Go to next step.
    2. No: Repair open in harness.
  5. CHECK FOR SHORT TO POWER IN HARNESS 
    1. Turn ignition switch to OFF position, and then disconnect OTS and ECM connectors.
    2. Turn ignition switch to ON position.
    3. Measure voltage between terminal 2 of the OTS harness connector and chassis ground.

      Specification (Voltage): below 0.5V

      Fig 5: Checking For Short To Power In Harness
      G01820647Courtesy of KIA MOTORS AMERICA, INC.

    Is voltage within specification?

    1. Yes:  Proceed with ECM PROBLEM INSPECTION PROCEDURE .
    2. No: Repair short to power in harness.
scientia non olet · About LEMON Manuals