FixVault
Home › Kia › 2007 › Amanti › Repair and Diagnosis › Brakes › Traction Control › Abs (Anti-Lock Brake System) › DTC C1237 Pressure Sensor-Signal › Signal Circuit Inspection

Signal Circuit Inspection

  1. Ignition "ON" & Engine "OFF".
  2. Put and release the brake pedal several times.
  3. Measure voltage, waveform between terminal "20,23" of the HECU harness connector and chassis ground.

    Specification :

    0.5V - 4.4V

    Approx. 0,5V (in case of no braking)

    Fig 1: Measuring Voltage Between Terminals 20 & 23 Of HECU Connector And Chassis Ground
    G05117511Courtesy of KIA MOTORS AMERICA, INC.
  4. Is the measured voltage 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 open or short in pressure sensor harness between terminal "1" of the pressure sensor A, B harness connector and terminal "20,23" of the HECU harness connector. Repair as necessary and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.
    • Go to "COMPONENT INSPECTION " procedure.
About FixVault