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

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

Courtesy of HYUNDAI MOTOR CO.

• Specifications: 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. Measure resistance between terminal 2 of the CKPS harness connector and 29 of the ECM harness connector.
3. Measure resistance between terminal 3 of the CKPS harness connector and 27 of the ECM harness connector C94-3 terminal 21.

Fig 2: Measuring Resistance Between Terminal Of CKPS Harness Connector & ECM Harness Connector C94-3 Terminal

Courtesy of HYUNDAI MOTOR CO.

• Specifications: below 1ohm 

Does each resistance indicate continuity? 

Yes: Go to next

No: Repair open in harness.

1. Keep the ECM and CKPS connectors disconnected.
2. Measure the resistance between terminal 2 of the CKPS harness connector and chassis ground.
3. Measure the resistance between terminals 2 and 3 of the CKPS harness connector.

Fig 3: Measuring Resistance Between Terminals 2 & 3 Of CKPS Harness Connector

Courtesy of HYUNDAI MOTOR CO.

• Specifications: infinite 

Does each resistance indicate open? 

Yes: Go to next

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

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

Fig 4: Measuring Voltage Between Terminal 2 Of CKPS Harness Connector & Chassis Ground

Courtesy of HYUNDAI MOTOR CO.

• Specifications: 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 reconnect CKPS and ECM connectors.
2. Connect a Hi-Scan (Pro) to the CKPS signal harness.
3. Start the engine and monitor the signal waveform of the CKPS at normal operating temperature.

• Refer to  SIGNAL WAVEFORM   for more information. 

Is signal normal? 

Yes: Proceed with ECM PROBLEM PROCEDURE  .

No: Replace CKPS.