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Home >> Kia >> 2012 >> Optima Hybrid >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Active Hydraulic Booster (AHB) System Diagnosis - HEV >> DTC C1379: Brake Pedal Travel Sensor-Signal >> Scantool Diagnostics >> Monitor GDS Data

Monitor GDS Data

  1. Connect GDS to Data Link Connector(DLC).
  2. ENG "ON".
  3. Monitor the "PDT Value", "PDF Value" parameter on the GDS between No Braking & Full Braking

    Specification:  PDT stroke is similar to PDF stroke

    The stroke should increase as pressing brake pedal and should decrease as depressing brake pedal.

    Fig 1: Display - Braking Characteristics Waveform IG 'ON'
    G08310270Courtesy of KIA MOTORS AMERICA, INC.
  4. Do PDT and PDF show normal relationship and normal operation?

    YES 

    • Fault is intermittent caused by poor connection in Brake Pedal Travel sensor and/or AHB's connector or was repaired and AHB memory was not cleared. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.

    NO 

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