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 No. 1 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.

P245C
DTC Detection Drive Pattern DTC Detection Condition Trouble Area
Engine switch on (IG) for 3 seconds or more Open or short in the No. 1 vacuum switching valve assembly (for EGR Bypass Valve) for 3 seconds (1 trip detection logic).

  • Open or short in No. 1 vacuum switching valve assembly (for EGR Bypass Valve) circuit

  • No. 1 vacuum switching valve assembly (for EGR Bypass Valve)

  • ECM
P245D
DTC Detection Drive Pattern DTC Detection Condition Trouble Area
Engine switch on (IG) for 3 seconds or more Open or short in the No. 1 vacuum switching valve assembly (for EGR Bypass Valve) for 3 seconds (1 trip detection logic).

  • Open or short in No. 1 vacuum switching valve assembly (for EGR Bypass Valve) circuit

  • No. 1 vacuum switching valve assembly (for EGR Bypass Valve)

  • ECM

WIRING DIAGRAM

B001CFYE07

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 (See page ) 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 NO. 1 VACUUM SWITCHING VALVE ASSEMBLY (FOR EGR BYPASS VALVE)


    1. Inspect the No. 1 vacuum switching valve assembly (for EGR bypass valve) Click here.


    NG

    REPLACE NO. 1 VACUUM SWITCHING VALVE ASSEMBLY (FOR EGR BYPASS VALVE) Click here

    OK

  2. CHECK NO. 1 VACUUM SWITCHING VALVE ASSEMBLY (FOR EGR BYPASS VALVE) (POWER SOURCE CIRCUIT)


    1. B001IFAE01
      Text in Illustration
      *a

      Front view of wire harness connector

      (to No. 1 Vacuum Switching Valve Assembly (for EGR Bypass Valve))

      Disconnect the No. 1 vacuum switching valve assembly (for EGR Bypass Valve) connector.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      C142-1 - Body ground Engine switch on (IG) 11 to 14 V

    3. Reconnect the No. 1 vacuum switching valve (for EGR Bypass Valve) connector.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (NO. 1VACUUM SWITCHING VALVE ASSEMBLY (FOR EGR BYPASS VALVE) - ECM)


    1. Disconnect the No. 1 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
      C142-2 - C149-16 (ECBV) Always Below 1 Ω
      C142-2 or C149-16 (ECBV) - Body ground and other terminals Always 10 kΩ or higher

    4. Reconnect the No. 1 vacuum switching valve assembly (for EGR Bypass Valve) connector.

    5. Reconnect the ECM connector.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR Click here

    OK

  4. REPLACE ECM


    1. Replace the ECM Click here.


    NEXT

    CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED Click here

  5. REPLACE NO. 1 VACUUM SWITCHING VALVE ASSEMBLY (FOR EGR BYPASS VALVE)


    1. Replace the No. 1 vacuum switching valve assembly (for EGR Bypass Valve) Click here.


    NEXT

    CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED Click here

  6. 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 No. 1 vacuum switching valve assembly (for EGR Bypass Valve) and No. 1 integration relay.


    NEXT

  7. CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED


    1. Connect the GTS to the DLC3.

    2. Clear the DTCs Click here.

    3. Turn the engine switch off wait 30 seconds.

    4. Turn the engine switch on (IG) for 3 seconds or more.

    5. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.

    6. Confirm that the DTC is not output again.


    NEXT

    END