Inspection Procedure

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.

1. Turn ignition switch to OFF position and disconnect OCV connector.
2. Measure resistance between terminals 1 and 2 of the OCV connector.

   Specification (OCV resistance):

   Fig 1: OCV Resistance Specification

   Courtesy of KIA MOTORS AMERICA, INC.
3. Connect the OCV connector and connect a Hi-Scan (Pro) to DLC.
4. Start the engine.
5. Inspect the signal waveform of the OCV using Hi-Scan (Pro). See SIGNAL WAVE FORM .
   Fig 2: Checking OCV Resistance

   Courtesy of KIA MOTORS AMERICA, INC.

Is resistance within specification?

1. Yes:  Go to next step.
2. No: Replace OCV.

1. Turn ignition switch to OFF position and disconnect OCV connector.
2. Turn ignition switch to ON position.
3. Measure voltage between terminal 2 of the OCV harness connector and chassis ground.

   Specification (Voltage): approximately B+

   Fig 3: Checking Power To OCV

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Is voltage within specification?

1. Yes:  Go to next step.
2. No: Repair open or short to chassis ground in harness.

1. Turn ignition to OFF position, and then disconnect OCV and ECM connector.
2. Measure resistance between terminal 2 of the OCV harness connector and 11 of the ECM harness connector.

   Specification (Resistance): below 1Ω

   Fig 4: Checking For Open In Harness

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Does the resistance indicate continuity?

1. Yes:  Go to next step.
2. No: Repair open in harness.

1. Turn ignition switch to OFF position, and then disconnect OCV and ECM connectors.
2. Turn ignition switch to ON position.
3. Measure voltage between terminal 1 of the OCV harness connector and chassis ground.

   Specification (Voltage): below 0.5V

   Fig 5: Checking For Short To Power In Harness

   Courtesy 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.