Signal Circuit Inspection

Check voltage
1. IG "OFF" and disconnect ECTS connector.
2. IG "ON" and ENG "OFF"
3. Measure voltage between terminal 3 of ECTS harness connector and chassis ground.
  Specification: Prix. 5V
  
  Fig 1: Measuring Voltage Between Terminal 3 Of ECTS Harness Connector And Chassis Ground
  Courtesy of KIA MOTORS AMERICA, INC.
4. Is the measured voltage within specification?
  YES
  - Go to "GROUND CIRCUIT INSPECTION " procedure.
  NO
  - If voltage is 0V, go to step 3. If it is more than 5.1V, go to step 2.
Check short to battery in harness
1. IG "OFF" and disconnect ECTS connector and ECM connector.
2. Measure resistance between terminals 2 and 3 of ECTS harness connector.
  Specification: Infinite
  
  Fig 2: Measuring Resistance Between Terminals 2 And 3 Of ECTS Harness Connector
  Courtesy of KIA MOTORS AMERICA, INC.
3. Is the measured resistance within specification?
  YES
  - Go to "COMPONENT INSPECTION " procedure.
  NO
  - Repair short to battery in harness, and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
Check open in harness
1. IG "OFF" and disconnect ECTS connector and ECM connector.
2. Measure resistance between terminal 3 of ECTS harness connector and terminal 7 of ECM harness Connector (C144-B).
  Specification: Below 1Ω
  
  Fig 3: Measuring Resistance Between Terminal 3 Of ECTS Harness Connector And Terminal 7 Of ECM Harness Connector (C144-B)
  Courtesy of KIA MOTORS AMERICA, INC.
3. Is the measured resistance within specification?
  YES
  - Go to "GROUND CIRCUIT INSPECTION " procedure.
  NO
  - Repair open in harness, and go to "VERIFICATION OF VEHICLE REPAIR " procedure.