Ground Circuit Inspection

Ignition "OFF".
Disconnect HECU connector.
Measure resistance between terminal "4" of the HECU harness connector and chassis ground.
Specification: Approx. below 1 Ω

Fig 1: Measuring Resistance Between Terminal "4" Of HECU Harness Connector And Chassis Ground
Courtesy of KIA MOTORS AMERICA, INC.
Is the measured resistance within specifications?
YES
- Substitute with a known-good HECU and check for proper operation. If problem is corrected, replace HECU and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.
NO
- Check for damaged harness and poor connection between terminal "4" of the HECU harness connector and chassis ground. Repair as necessary and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.