Signal Circuit Inspection

Check for Short to Ground in Signal Circuit
1. IG KEY OFF.
2. Disconnect PCM and APS harness connector.
3. IG KEY ON.
4. Measure resistance between APS1 signal terminal of APS harness connector and chassis ground.
  Specification: Infinite
  
  Fig 1: Measuring Resistance Between APS1 Signal Terminal Of APS 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 for Open in Signal circuit
1. IG KEY OFF.
2. Disconnect APS harness connector and PCM harness connector.
3. Measure resistance between both ends of APS1 signal line.
  Specification: Below 1 Ω.
  
  Fig 2: Measuring Resistance Between Both Ends Of APS1 Signal 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 .