Signal Circuit Inspection

■ Check voltage 

1. IG "OFF" and disconnect ETC Motor & TPS connector.
2. IG "ON".
3. Measure voltage between TPS1 signal terminal of ETC Motor & TPS harness connector and chassis ground.

   Specification:  Approx. 5V

   Fig 1: Measuring Voltage Between TPS1 Signal Terminal Of ETC Motor & TPS Harness Connector And Chassis Ground

   Courtesy of HYUNDAI MOTOR AMERICA
4. Is the measured voltage within specification?

   YES 

   • Go to "Check open in harness" as follows.

   NO 

   • Go to "Check short to battery in harness" as follows.

■ Check open in harness 

1. IG "OFF" and disconnect ETC Motor & TPS connector and PCM connector.
2. Measure resistance between TPS1 signal terminal of ETC Motor & TPS harness connector and TPS1 signal terminal of PCM harness connector.

   Specification:  Below 1Ω.

   Fig 2: Measuring Resistance Between TPS1 Signal Terminal Of ETC Motor & TPS Harness Connector And TPS1 Signal Terminal Of PCM Harness Connector

   Courtesy of HYUNDAI MOTOR AMERICA
3. Is the measured resistance within specification?

   YES 

   • Go to "Ground Circuit Inspection " procedure below.

   NO 

   • Repair open in harness, and go to "Verification of Vehicle Repair " procedure.

■ Check short to battery in harness 

1. IG "OFF" and disconnect ETC Motor & TPS connector and PCM connector.
2. Measure resistance between TPS1 signal and TPS power terminals of ETC Motor & TPS harness connector. (Measurement "A")
3. Measure resistance between TPS1 signal and ETC motor (+) terminals of ETC Motor & TPS harness connector. (Measurement "B")
4. Measure resistance between TPS1 signal and ETC motor (-) terminals of ETC Motor & TPS harness connector. (Measurement "B")

   Specification:  Infinite

   Fig 3: Measuring Resistance Between TPS1 Signal And TPS Power Terminals Of ETC Motor & TPS Harness Connector (Measurement A)

   Courtesy of HYUNDAI MOTOR AMERICA
   Fig 4: Measuring Resistance Between TPS1 Signal And ETC Motor (+) Terminals Of ETC Motor & TPS Harness Connector (Measurement B)

   Courtesy of HYUNDAI MOTOR AMERICA
5. Is the measured resistance within specification?

   YES 

   • Go to "Ground Circuit Inspection " procedure below.

   NO 

   • Repair short to battery in harness, and go to "Verification of Vehicle Repair " procedure.