Inspection Procedures

1. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage

Are all connectors good? 

Yes: Go to next

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.
   Fig 1: Measuring Resistance Between Terminals 1 & 2 Of OCV Connector

   Courtesy of HYUNDAI MOTOR CO.
   • 6.9~7.9° at 20°C (68°F) 
3. Inspect the signal waveform of the OCV using a Hi-scan (Pro).

• Refer to  SIGNAL WAVEFORM   for more information. 

  Is resistance within specification? 

Yes: Go to next

No: Replace OCV.

1. Turn ignition switch to ON position and measure voltage between terminal 1 of the OCV harness connector and chassis ground.

Fig 2: Measuring Voltage Between Terminal 1 Of OCV Harness Connector & Chassis Ground

Courtesy of HYUNDAI MOTOR CO.

• Specification: approximately B+ 

  Is voltage within specification? 

Yes: Go to next

No: Repair open or short to chassis ground in harness.

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

Fig 3: Measuring Voltage Between Terminal 2 Of OCV Harness Connector & Chassis Ground

Courtesy of HYUNDAI MOTOR CO.

• Specification: below 0.5V 

  Is voltage within specification? 

Yes: Go to next

No: Repair short to power in harness.

1. Turn ignition switch to OFF position and keep the OCV and ECM connectors disconnected.
2. Measure resistance between terminal 2 of the OCV harness connector and 24 of the ECM harness connector.

Fig 4: Measuring Resistance Between Terminal 2 Of OCV Harness Connector & 24 Of ECM Harness Connector

Courtesy of HYUNDAI MOTOR CO.

• Specification: below 1ohm 

  Does resistance indicate continuity? 

Yes: Proceed with ECM PROBLEM PROCEDURE  .

No: Repair open in harness.