Signal Circuit Inspection

Check Voltage
1. Ignition "OFF"
2. Disconnect FLS sensor connector.
3. Ignition "ON" & Engine "OFF"
4. Measure voltage between terminal 1 of FLS harness connector and chassis ground.
  Specification: Approx. 5V
  
  Fig 1: Measuring Voltage Between Terminal 1 Of FLS Harness Connector And Chassis Ground
  Courtesy of KIA MOTORS AMERICA, INC.
5. Is the measured voltage within specifications?
  YES
  - Go to "COMPONENT INSPECTION " procedure.
  NO
  - Go to "Check for short to ground in harness" as below.
Check for short to ground in harness
1. Ignition "OFF"
2. Disconnect FLS sensor & PCM connector.
3. Measure resistance between terminal 1 and chassis ground.
  Specification: Infinite
  
  Fig 2: Measuring Resistance Between Terminal 1 And Chassis Ground
  Courtesy of KIA MOTORS AMERICA, INC.
4. Is the measured resistance within specifications?
  YES
  - Go to "COMPONENT INSPECTION " procedure.
  NO
  - Check for short to ground in harness.
  - Repair or replace as necessary and then, go to "VERIFICATION OF VEHICLE REPAIR " procedure.