Power Circuit Inspection

IG KEY OFF.
Disconnect ETC connector.
IG KEY ON.
Measure voltage between TPS power circuit of ETC harness connector and chassis ground.
Specification: Approx. 5V

Fig 1: Measuring Voltage Between TPS Power Circuit Of ETC Connector And Chassis Ground (1 Of 2)
Courtesy of HYUNDAI MOTOR CO.

Fig 2: Measuring Voltage Between TPS Power Circuit Of ETC Connector And Chassis Ground (2 Of 2)
Courtesy of HYUNDAI MOTOR CO.
Is voltage within the specification?
YES
- Go to "SIGNAL CIRCUIT INSPECTION " procedure.
NO
- Go to next procedure.

IG KEY OFF.
Disconnect PCM and ETC connector.
IG KEY ON.
Measure resistance between TPS power terminal of ETC harness connector and chassis ground.
Specification: Infinite

Fig 3: Measuring Resistance Between TPS Power Terminal Of ETC Connector And Chassis Ground (1 Of 2)
Courtesy of HYUNDAI MOTOR CO.

Fig 4: Measuring Resistance Between TPS Power Terminal Of ETC Connector And Chassis Ground (2 Of 2)
Courtesy of HYUNDAI MOTOR CO.
Is resistance within specification?
YES
- Go to next procedure.
NO
- Repair as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.

IG KEY OFF.
Disconnect ETC connector and PCM connector.
Measure resistance between both ends of TPS Power line.
Specification: Below 1Ω

Fig 5: Measuring Resistance Between Both Ends Of TPS Power Line (1 Of 2)
Courtesy of HYUNDAI MOTOR CO.

Fig 6: Measuring Resistance Between Both Ends Of TPS Power Line (2 Of 2)
Courtesy of HYUNDAI MOTOR CO.
Is resistance within specification?
YES
- Go to next procedure.
NO
- Repair as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.