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Home >> Kia >> 2012 >> Optima Hybrid >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Active Hydraulic Booster (AHB) System Diagnosis - HEV >> DTC C1234: High Pressure Accumulator Long Term Charge Error >> Wiring Inspection >> Control Circuit Inspection

Control Circuit Inspection

  1. IG "OFF" & Disconnect PSU Motor connector.
  2. Disconnect IBAU connector.
  3. Measure resistance between Pin No. 2 (control) of PSU Motor connector and Pin No. 13 (control) of IBAU connector.

    Specification:  Approx. 1Ω

  4. Is the measured value within specifications?

    YES 

    • Carefully re-do this troubleshooting guide steps.
    • If problem still occurs, replace PSU Motor and then go to "System Inspection " procedure.

    NO 

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