Inspection Procedures

1. Turn ignition switch to ON position.
2. Using a Hi-Scan (Pro), monitor the TPS signals while slowly opening the throttle.

• Refer to  SPECIFICATIONS   for more information. 

Is signal within specification and consistent with the normal curve? 

No: Go to next

Yes: Problem is intermittent or was repaired and engine control module memory was not cleared. Proceed with INTERMITTENT PROBLEM PROCEDURE  .

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 TPS connector.
2. Measure resistance between terminals 1 and 2 of the TPS.
3. Measure resistance between terminals 2 and 3 of the TPS.

Fig 1: Measuring Resistance Between Terminals Of TPS

Courtesy of HYUNDAI MOTOR CO.

• Refer to  SPECIFICATIONS   for more information. 

Is resistance within specification? 

Yes: Go to next

No: Replace TPS.

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

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

Courtesy of HYUNDAI MOTOR CO.

• Specification: approximately 5V 

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.
2. Disconnect ECM connector.
3. Measure resistance of TPS ground harness between terminal 2 of the TPS harness connector and terminal 38 of the ECM harness connector.
4. Measure resistance of TPS signal harness between terminal 1 of the TPS harness connector and terminal 32 of the ECM harness connector.

Fig 3: Measuring Resistance Of TPS Ground Harness Between Terminal Of TPS Harness Connector & Terminal Of ECM Harness Connector

Courtesy of HYUNDAI MOTOR CO.

• Specification: below 1ohm 

Does each resistance indicate continuity? 

Yes: Go to next

No: Repair open in harness.

1. Turn ignition switch to ON position.
2. Measure voltage of TPS signal harness between terminal 1 of the TPS harness connector and chassis ground.
   Fig 4: Measuring Voltage Of TPS Signal Harness Between Terminal 1 Of TPS Harness Connector & Chassis Ground

   Courtesy of HYUNDAI MOTOR CO.
   • Specification: below 0.5V 

   Is voltage within specification? 

   Yes: Proceed with ECM PROBLEM PROCEDURE  .

   No: Repair short to power in harness.