Ground Circuit Inspection

IG "OFF" and disconnect APS connector.
Measure voltage between APS1 power terminal of APS harness connector and chassis ground. (Measurement "A")
Measure voltage between APS1 power and APS1 ground terminals of APS harness connector. (Measurement "B")
Specification: Voltage difference between measurement "A" and "B" is below 200mV.

Fig 1: Measuring Voltage Between APS1 Power Terminal Of APS Harness Connector And Chassis Ground (Measurement A)
Courtesy of HYUNDAI MOTOR CO.

Fig 2: Measuring Voltage Between APS1 Power Terminal Of APS Harness Connector And Chassis Ground (Measurement B)
Courtesy of HYUNDAI MOTOR CO.
Is the measured voltage within specification?
YES
- Go to "COMPONENT INSPECTION " procedure.
NO
- Repair contact resistance or open in harness and go to "VERIFICATION OF VEHICLE REPAIR " procedure.