Signal Circuit Inspection

Check short to ground in harness
1. IG "OFF".
2. Disconnect APS connector and ECM connector.
3. Measure resistance between APS1 signal terminal of APS harness connector and chassis ground. (Measurement "A")
4. Measure resistance between APS1 signal and APS1(2) ground terminals of APS harness connector. (Measurement "B")
  Specification: Infinite
  
  Fig 1: Measuring Resistance Between APS1 Signal Terminal Of APS Harness Connector And Chassis Ground (Measurement A)
  Courtesy of HYUNDAI MOTOR AMERICA
  
  Fig 2: APS And ECM Connector Terminals
  Courtesy of HYUNDAI MOTOR AMERICA
  
  Fig 3: Measuring Resistance Between APS1 Signal And APS1 (2) Ground Terminals Of APS Harness Connector (Measurement B)
  Courtesy of HYUNDAI MOTOR AMERICA
  
  Fig 4: APS And ECM Connector Terminals
  Courtesy of HYUNDAI MOTOR AMERICA
5. Is the measured resistance within specification?
  YES
  - Go to " 2 Check open in harness" as follows.
  NO
  - Repair short to ground in harness and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
Check open in harness
1. IG "OFF" and disconnect APS connector and ECM connector.
2. Measure resistance between APS1 signal terminal of APS harness connector and APS1 signal terminal of ECM harness connector.
  Specification: Approx. below 1Ω
  
  Fig 5: Measuring Resistance Between APS1 Signal Terminal Of APS Harness Connector And APS1 Signal Terminal Of ECM Harness Connector
  Courtesy of HYUNDAI MOTOR AMERICA
  
  Fig 6: APS And ECM Connector Terminals
  Courtesy of HYUNDAI MOTOR AMERICA
3. Is the measured resistance within specification?
  YES
  - Go to "COMPONENT INSPECTION " procedure.
  NO
  - Repair open in harness and go to "VERIFICATION OF VEHICLE REPAIR " procedure.