Signal Circuit Inspection

IG "OFF".
Disconnect APS connector and ECM connector.
Measure resistance between APS2 signal terminal of APS harness connector and chassis ground. (Measurement "A")
Measure resistance between APS2 signal and APS1(2) ground terminals of APS harness connector. (Measurement "B")
Specification: Infinite

Fig 1: Measuring Resistance Between APS2 Signal Terminal Of APS Harness Connector And Chassis Ground (Measurement A)
Courtesy of HYUNDAI MOTOR CO.

Fig 2: Measuring Resistance Between APS2 Signal Terminal Of APS Harness Connector And Chassis Ground (Measurement B)
Courtesy of HYUNDAI MOTOR CO.
Is the measured resistance within specification?
YES
- Go to "Check open in harness" as follows.
NO
- Repair short to ground in harness and go to "VERIFICATION OF VEHICLE REPAIR " procedure.

IG "OFF" and disconnect APS connector and ECM connector.
Measure resistance between APS2 signal terminal of APS harness connector and APS2 signal terminal of ECM harness connector.
Specification: Approx. below 1Ω.

Fig 3: Measuring Resistance Between APS2 Signal Terminal Of APS And APS2 Signal Terminal Of ECM Harness Connector
Courtesy of HYUNDAI MOTOR CO.
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.