GDS Data Analysis

Connect GDS to Data Link Connector. (DLC)
Engine "ON".
Diagnose ABS/ESP with GDS for DTC and state information.
In case of historic DTC: Erase DTC and go to "Verification Of Vehicle Repair " procedure.
In case of active DTC: Perform following procedure.
Monitor the "Pressure Sensor" parameter on the "Current Data " with GDS while firmly pressing brake pedal and release.
Specification: Approx. 60bar ~150bar (There is difference in displayed parameter according to braking force)

Fig 1: Hydraulic Electronic Control Unit (HECU) Data Screen Display
Courtesy of KIA MOTORS AMERICA, INC.
Is the parameter displayed changes as pressing/releasing brake pedal?
YES
- Fault might be caused by having been repaired and HECU memory was not cleared. Clear the DTC and then go to "Verification Of Vehicle Repair " procedure.
NO
- 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.
NOTE:
* In case of replacing HECU, perform following procedures.
1. "ASP Calibration" for steering angle sensor offset correction (refer to C1261 )
2. "Longitudinal Sensor Calibration" for Longitudinal sensor offset correction (refer to C1285 )
3. "Variant Coding" (refer to C1702 )