ECD SYSTEM(w/ Urea SCR System), Diagnostic DTC:P245C, P245D

DTC Code DTC Name
P245C Exhaust Gas Recirculation Cooler Bypass Control Circuit Low
P245D Exhaust Gas Recirculation Cooler Bypass Control Circuit High

DESCRIPTION

The vacuum switching valve assembly (for EGR Bypass Valve) is controlled by the ECM, and the opening and closing of the EGR cooler bypass valve is performed according to the vacuum applied by the vacuum pump.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory
P245C Exhaust Gas Recirculation Cooler Bypass Control Circuit Low Open or short in the vacuum switching valve assembly (for EGR Bypass Valve) for 3 seconds (1 trip detection logic).

  • Open or short in vacuum switching valve assembly (for EGR Bypass Valve) circuit

  • Vacuum switching valve assembly (for EGR Bypass Valve)

  • ECM

 Comes on DTC stored
P245D Exhaust Gas Recirculation Cooler Bypass Control Circuit High Open or short in the vacuum switching valve assembly (for EGR Bypass Valve) for 3 seconds (1 trip detection logic).

  • Open or short in vacuum switching valve assembly (for EGR Bypass Valve) circuit

  • Vacuum switching valve assembly (for EGR Bypass Valve)

  • ECM

 Comes on DTC stored

CONFIRMATION DRIVING PATTERN

DTC No. DTC Detection Drive Pattern

P245C

P245D

 Ignition switch ON for 3 seconds or more

WIRING DIAGRAM

B0024AWE21

CAUTION / NOTICE / HINT

Note


  • Inspect the fuses of circuits related to this system before performing the following inspection procedure.

  • After replacing the ECM, the new ECM needs registration (Click here ) and initialization Click here.

Tech Tips

Read freeze frame data using the GTS. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, and other data from the time the malfunction occurred.

PROCEDURE


  1. INSPECT VACUUM SWITCHING VALVE ASSEMBLY (FOR EGR BYPASS VALVE)


    1. Inspect the vacuum switching valve assembly (for EGR Bypass Valve).

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE VACUUM CONTROL VALVE SET Click here

    OK

  2. CHECK VACUUM SWITCHING VALVE ASSEMBLY (FOR EGR BYPASS VALVE) (POWER SOURCE CIRCUIT)


    1. Disconnect the vacuum switching valve assembly (for EGR Bypass Valve) connector.

    2. B0027XRC02
      *a

      Front view of wire harness connector

      (to Vacuum Switching Valve Assembly (for EGR Bypass Valve))

      Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      C96-1 - Body ground Ignition switch ON 11 to 14 V
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (VACUUM SWITCHING VALVE (FOR EGR BYPASS VALVE) - ECM)


    1. Disconnect the vacuum switching valve assembly (for EGR Bypass Valve) connector.

    2. Disconnect the ECM connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      C96-2 - C57-16 (ECBV) Always Below 1 Ω
      C96-2 or C57-16 (ECBV) - Body ground and other terminals Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    GO TO STEP 5 Click here

    OK

  4. REPLACE ECM


    1. Replace the ECM.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

    GO TO STEP 6 Click here

  5. REPAIR OR REPLACE HARNESS OR CONNECTOR


    1. Repair or replace the harness or connector.

      Tech Tips

      If the voltage at the vacuum switching valve assembly (for EGR Bypass Valve) connector is not 11 to 14 V, repair or replace the harness and connector between the vacuum switching valve assembly (for EGR Bypass Valve) and instrument panel junction block assembly.

      Result
      Proceed to
      NEXT

    NEXT

  6. CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED


    1. Connect the GTS to the DLC3.

    2. Clear the DTCs.


      Powertrain > Engine > Clear DTCs

    3. Turn the ignition switch to ON for 3 seconds or more.

    4. Enter the following menus: Powertrain / Engine / Trouble Codes.

    5. Confirm that the DTC is not output again.


      Powertrain > Engine > Trouble Codes
      Result
      Proceed to
      NEXT

    NEXT

    END

  7. REPLACE VACUUM CONTROL VALVE SET


    1. Replace the vacuum control valve set.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

    GO TO STEP 6 Click here