Signal Circuit Inspection

■ Open or Short Check 

1. IG "ON".
2. Press the ESC(ESP) SWITCH.
3. Measure voltage between ESC(ESP) switch signal terminal of the HECU harness connector and chassis ground.

   Specification:  Approx B+

   Fig 1: Measuring Voltage Between ESC(ESP) Switch Signal Terminal Of HECU Harness Connector And Chassis Ground

   Courtesy of HYUNDAI MOTOR AMERICA
4. Is the measured value within specifications?

   YES 

   • Go to "COMPONENT INSPECTION " Procedure.

   NO 

   • Check for open or blown fuse referring to "DIAGNOSTIC CIRCUIT DIAGRAM ".
   • Repair open or short in power circuit between battery and HECU harness connector and then, go to "VERIFICATION OF VEHICLE REPAIR " procedure.