Power Circuit Inspection

Check Voltage
1. Ignition "OFF"
2. Disconnect ECM connector
3. Ignition "ON" & Engine "OFF"
4. Measure voltage between terminal "76" of ECM harness Connector (C144-B) and chassis ground
  Specification: B+
  
  Fig 1: Measuring Voltage Between Terminal "76" Of ECM Harness Connector (C144-B) And Chassis Ground
  Courtesy of KIA MOTORS AMERICA, INC.
5. Is the measured voltage within specifications?
  YES
  - Substitute with a known-good ECM and check for proper operation.
  - If the problem is corrected, replace ECM and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
  NO
  - Check for open or short to ground in harness.
  - Check whether fuse is installed or blown off.
  - Repair or replace as necessary and then, go to "VERIFICATION OF VEHICLE REPAIR " procedure.
  NOTE: There is a memory reset function on scan tool that can erase optional parts automatically detected and memorized by ECM. After testing ECM on the vehicle, use this function before reusing the ECM