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Home › Kia › 2016 › Cadenza Base › Repair and Diagnosis › Brakes › Traction Control › Electronic Stability Control (ESC) System Diagnosis › DTC C1237: Primary Pressure Sensor-Signal › Component Inspection

Component Inspection

  1. Connect GDS to Data Link Connector (DLC).
  2. IG "ON".
  3. Monitor "Pressure sensor" parameter on the "Current Data  " with GDS while firmly pressing brake pedal and releasing.
  4. Use the GDS and check that the pressure sensor value rises while pressing the brake pedal.
    Fig 1: Screen Display - Pressure Change As Pressing/Releasing Brake Pedal
    G11787538Courtesy of KIA MOTORS AMERICA, INC.
  5. Is the parameter displayed changes as pressing/releasing brake pedal?

    YES 

    • This fault might be intermittently caused by poor connection in HECU. Go to "VERIFICATION OF VEHICLE REPAIR " procedure.
      NOTE: In case of replacing HECU, perform following procedures
      1. "SAS Calibration" for steering angle sensor offset correction (refer to C1261 ) - ESP only
      2. "Longitudinal G Sensor Calibration" for Longitudinal sensor offset correction (refer to C1285 ) - ESP only
      3. "Variant Coding" (refer to C1702 )

    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.
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