СИСТЕМА ECD, Diagnostic DTC:P245C, P245D

DTC Code DTC Name
P245C EGR Cooler Bypass Control Circuit Low
P245D EGR Cooler Bypass Control Circuit High

DESCRIPTION

The No.1 vacuum switching valve assembly (for EGR cooler) 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 EGR Cooler Bypass Control Circuit Low Open or short in the No.1 vacuum switching valve assembly (for EGR cooler) for 3 seconds (1 trip detection logic).
  • Open or short in No.1 vacuum switching valve assembly (for EGR cooler) circuit

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

  • ECM

Comes on DTC stored
P245D EGR Cooler Bypass Control Circuit High Open or short in the No.1 vacuum switching valve assembly (for EGR cooler) for 3 seconds (1 trip detection logic).
  • Open or short in No.1 vacuum switching valve assembly (for EGR cooler) circuit

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

  • ECM

Comes on DTC stored

CONFIRMATION DRIVING PATTERN

DTC No. DTC Detection Drive Pattern
P245C Ignition switch ON for 3 seconds
P245D

WIRING DIAGRAM

A012JT7E01

CAUTION / NOTICE / HINT

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

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

Tip:

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 COOLER)

    1. Inspect the No. 1 vacuum switching valve assembly (for EGR cooler).

      Click hereНажмите здесь

      Result
      Proceed to
      OK
      NG
    NG Нажмите здесь

    OK
  2. CHECK TERMINAL VOLTAGE (POWER SOURCE OF NO. 1 VACUUM SWITCHING VALVE ASSEMBLY (FOR EGR COOLER))

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

      A012I1KC04
      *a

      Front view of wire harness connector

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

    2. Turn the ignition switch to ON.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      B145-1 - Body ground Ignition switch ON 11 to 14 V
      Result
      Proceed to
      OK
      NG
    NG Нажмите здесь

    GO TO STEP 5


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

    1. Disconnect the No. 1 vacuum switching valve assembly (for EGR cooler) 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
      B145-2 - B164-106 (ECBV) Always Below 1 Ω
      B145-2 or B164-106 (ECBV) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG
    NG Нажмите здесь

    OK
  4. REPLACE ECM

    1. Replace the ECM.

      Click hereНажмите здесь

      Result
      Proceed to
      NEXT
    NEXT Нажмите здесь

    GO TO STEP 6


  5. REPAIR OR REPLACE HARNESS OR CONNECTOR

    Tip:

    If the voltage at the No. 1 vacuum switching valve assembly (for EGR cooler) connector is not 11 to 14 V, repair or replace the harness and connector between the No. 1 vacuum switching valve assembly (for EGR cooler) and EFI-MAIN relay (including the EFI NO. 1 fuse).

    1. Repair or replace the harness or connector.

      Result
      Proceed to
      NEXT
    NEXT
  6. CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED

    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Clear the DTCs.

      Powertrain > Engine and ECT > Clear DTCs
    5. Turn the ignition switch off and wait for 30 seconds.

    6. Turn the ignition switch to ON for 3 seconds.

    7. Turn the GTS on.

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

    9. Confirm that the DTC is not output.

      Powertrain > Engine and ECT > Trouble Codes
      Result
      Proceed to
      NEXT
    NEXT

    END


  7. REPLACE NO.1 VACUUM SWITCHING VALVE ASSEMBLY (FOR EGR COOLER)

    1. Replace the No. 1 vacuum switching valve assembly (for EGR cooler).

      Click hereНажмите здесь

      Result
      Proceed to
      NEXT
    NEXT Нажмите здесь

    GO TO STEP 6