СИСТЕМА ECD, Diagnostic DTC:P245A, P245C, P245D

DTC Code DTC Name
P245A Open in Exhaust Gas Recirculation Cooler Bypass Control Circuit
P245C EGR Cooler Bypass Control Circuit Low
P245D EGR Cooler Bypass Control Circuit High

DESCRIPTION

The ECM controls the No. 1 vacuum switching valve assembly (EGR cooler bypass valve VSV) to open and close the EGR cooler bypass valve.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory
P245A Open in Exhaust Gas Recirculation Cooler Bypass Control Circuit

Open or short in No. 1 vacuum switching valve assembly (EGR cooler bypass valve VSV) circuit for 3 seconds

(2 trip detection logic)

  • Open or short in No. 1 vacuum switching valve assembly (EGR cooler bypass valve VSV) circuit

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

  • ECM

Comes on DTC stored
P245C EGR Cooler Bypass Control Circuit Low

Short to ground in the No. 1 vacuum switching valve assembly (EGR cooler bypass valve VSV) circuit for 3 seconds

(2 trip detection logic)

  • Short in No. 1 vacuum switching valve assembly (EGR cooler bypass valve VSV) circuit

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

  • ECM

Comes on DTC stored
P245D EGR Cooler Bypass Control Circuit High

Short to +B in the No. 1 vacuum switching valve assembly (EGR cooler bypass valve VSV) circuit for 3 seconds

(2 trip detection logic)

  • Short in No. 1 vacuum switching valve assembly (EGR cooler bypass valve VSV) circuit

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

  • ECM

Comes on DTC stored
Table 1. DTC Detection Drive Pattern
DTC No. DTC Detection Drive Pattern
P245A Ignition switch ON for 15 seconds or more
P245C
P245D

WIRING DIAGRAM

A012FNYE01

CAUTION / NOTICE / HINT

Note:
  • When replacing the ECM, perform ECM Initialization and Registration.

    Click here Нажмите здесь

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

Tip:
  • When the ECM must be replaced, before replacing the ECM, perform the "Learning Values Save" function using the GTS. Then after installing a new ECM, perform all of the initialization and registration procedures for the "Learning Values Write" function by following the instructions shown on the GTS display.

  • 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 (EGR COOLER BYPASS VALVE VSV)

    1. Inspect the No. 1 vacuum switching valve assembly.

      Click hereНажмите здесь

      Result
      Proceed to
      OK
      NG
    NG Нажмите здесь

    OK
  2. CHECK HARNESS AND CONNECTOR (NO. 1 VACUUM SWITCHING VALVE ASSEMBLY - ECM)

    1. Disconnect the No. 1 vacuum switching valve assembly 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
      B118-2 - A101-40 (ECBV) Always Below 1 Ω
      B118-2 or A101-40 (ECBV) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG
    NG Нажмите здесь

    OK
  3. CHECK TERMINAL VOLTAGE (POWER SOURCE OF NO. 1 VACUUM SWITCHING VALVE ASSEMBLY)

    1. Disconnect the No. 1 vacuum switching valve assembly connector.

      A012GGYC03
      *a

      Front view of wire harness connector

      (to No. 1 Vacuum Switching Valve Assembly)

    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
      B118-1 - Body ground Ignition switch ON 11 to 14 V
      Result
      Proceed to
      OK
      NG
    NG Нажмите здесь

    OK
  4. REPLACE ECM

    1. Replace the ECM.

      Click hereНажмите здесь

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

    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON and turn the GTS on.

    3. Clear the DTCs.

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

    5. Turn the ignition switch to ON and wait for 15 seconds or more.

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

    7. Confirm that the pending DTC is not output again.

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

    END


  6. REPAIR OR REPLACE HARNESS OR CONNECTOR (EFI-MAIN RELAY - NO. 1 VACUUM SWITCHING VALVE ASSEMBLY)

    Result
    Proceed to
    NEXT
    NEXT Нажмите здесь

    GO TO STEP 5


  7. REPAIR OR REPLACE HARNESS OR CONNECTOR

    Result
    Proceed to
    NEXT
    NEXT Нажмите здесь

    GO TO STEP 5


  8. REPLACE NO. 1 VACUUM SWITCHING VALVE ASSEMBLY (EGR COOLER BYPASS VALVE VSV)

    1. Replace the No. 1 vacuum switching valve assembly.

      Click hereНажмите здесь

      Result
      Proceed to
      NEXT
    NEXT Нажмите здесь

    GO TO STEP 5