Power Circuit Inspection

Power Circuit Preliminary Inspection
1. IG KEY OFF.
2. Disconnect ETC connector.
3. IG KEY ON.
4. Measure voltage between TPS power circuit of ETC harness connector and chassis ground.
  Specification: Approx. 5 V
  
  Fig 1: Measuring Voltage Between TPS Power Circuit Of ETC Harness Connector And Chassis Ground
  Courtesy of HYUNDAI MOTOR CO.
5. Is voltage within the specification?
  YES
  - Go to SIGNAL CIRCUIT INSPECTION .
  NO
  - Go to next procedure.
Check for Short to Ground in Power Circuit
1. IG KEY OFF.
2. Disconnect PCM and ETC connector.
3. IG KEY ON.
4. Measure resistance between TPS power terminal of ETC harness connector and chassis ground.
  Specification: Infinite
  
  Fig 2: Measuring Resistance Between TPS Power Terminal Of ETC Harness Connector And Chassis Ground
  Courtesy of HYUNDAI MOTOR CO.
5. Is resistance within specification?
  YES
  - Go to next procedure.
  NO
  - Repair as necessary and go to VERIFICATION OF VEHICLE REPAIR .
Check Open in Power Circuit
1. IG KEY OFF.
2. Disconnect ETC connector and PCM connector.
3. Measure resistance between both ends of TPS Power line.
  Specification: Below 1 Ω
  
  Fig 3: Measuring Resistance Between Both Ends Of TPS Power Line
  Courtesy of HYUNDAI MOTOR CO.
4. Is resistance within specification?
  YES
  - Go to next procedure.
  NO
  - Repair as necessary and go to VERIFICATION OF VEHICLE REPAIR .