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HOMESERVICE MANUALSHYUNDAI2009SONATA SE, 3.3 FREPAIR AND DIAGNOSIS (SINGLE PAGE)BRAKESANTI-LOCK BRAKESESC (ELECTRONIC STABILITY CONTROL) SYSTEMTROUBLESHOOTING FOR DTCC2366 TC VALVE PRIMARY (USV1) ERRORDTC DETECTING CONDITION
2009 Hyundai Sonata SE, 3.3 F

C2366 TC Valve Primary (USV1) Error: DTC Detecting Condition

2009 Hyundai Sonata SE, 3.3 FSECTION DTC Detecting Condition
DTC DETECTING CONDITION AND POSSIBLE CAUSE

Item Detecting Condition Possible cause
DTC Strategy
  • Voltage monitoring
  • Faulty HECU
Case 1 Monitoring Period
  • Once after ignition on at standstill if the BLS is off.
  • At vehicle speed ≥ 15 km/h if the BLS is on.
Enable Conditions
  • The test actuates all valves in series to detect shorts or shunts between the valve lines. Faults are detected if there is an error during the test.
Case2 Monitoring Period
  • The drift test executes only once during an ignition Cycle. The test is triggered if the following conditions are fulfilled : 10min after power up or end of control
    1. No BLS is applied
    2. Brake pressure is < 10bar
    3. Vehicle speed >15km/h
    4. Vehicle acceleration > 0.5m/s2
    5. Supply voltage > 11 volts.
Enable Conditions
  • The drift test is executed only once during an ignition Cycle.

    If it detects partly shorted valve coils, almost defective coils or malfunction of the valve driver, a failure is recognized.
Fail Safe
  • Valve cannot be actuated or valve is incorrectly actuated. This may result in locked wheels or wheels without pressure.
  • ABS/EBD/ESC function is prohibited.
  • ABS/EBD/ESC warning lamp is turned ON.
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