Signal Circuit Inspection

Check voltage
1. IG "OFF" and disconnect auto cruise switch connector.
2. IG "ON" & ENG "OFF".
3. Measure voltage between terminal 1 of auto cruise switch harness connector and chassis ground.
  Specification: Approx. 5V
  
  Fig 1: Measuring Voltage Between Terminal 1 Of Auto Cruise Switch Harness Connector And Chassis Ground
  Courtesy of HYUNDAI MOTOR CO.
4. Is the measured voltage within specification?
  YES
  - Go to "COMPONENT INSPECTION " procedure.
  NO
  - Go to " 2 Check short in harness" as follows.
Check short in harness
1. IG "OFF" and disconnect auto cruise switch connector and PCM connector.
2. Measure resistance between terminals 1 and 2 of auto cruise switch harness connector.
3. Measure resistance between terminals 1 and 3 of auto cruise switch harness connector.
  Specification: Infinite
  
  Fig 2: Measuring Resistance Between Terminals 1 And 3 Of Auto Cruise Switch Harness Connector
  Courtesy of HYUNDAI MOTOR CO.
4. Is the measured resistance within specification?
  YES
  - Go to "COMPONENT INSPECTION " procedure.
  NO
  - Go to " 2 Check short in harness" as follows.
Check open in harness
1. IG "OFF" and disconnect auto cruise switch connector and PCM connector.
2. Measure resistance between terminal 1 of auto cruise switch harness connector and terminal 25 of PCM harness connector.
  Specification: Below 1Ω
  
  Fig 3: Measuring Resistance Between Terminal 1 Of Auto Cruise Switch Harness Connector And Terminal 25 Of PCM Harness Connector
  Courtesy of HYUNDAI MOTOR CO.
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.