ECD SYSTEM, 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 vacuum switching valve to open and close the EGR cooler bypass valve.

P245A
DTC Detection Drive Pattern DTC Detection Condition Trouble Area
Ignition switch ON for 15 seconds or more

Open or short in EGR cooler bypass valve VSV control circuit

(2 trip detection logic)

  • Open or short in EGR cooler bypass valve VSV control circuit

  • EGR cooler bypass valve VSV

  • ECM
P245C
DTC Detection Drive Pattern DTC Detection Condition Trouble Area
Ignition switch ON for 15 seconds or more

Ground short in EGR cooler bypass valve VSV control circuit

(2 trip detection logic)

  • Short in EGR cooler bypass valve VSV control circuit

  • EGR cooler bypass valve VSV

  • ECM
P245D
DTC Detection Drive Pattern DTC Detection Condition Trouble Area
Ignition switch ON for 15 seconds or more

Battery short in EGR cooler bypass valve VSV control circuit

(2 trip detection logic)

  • Short in EGR cooler bypass valve VSV control circuit

  • EGR cooler bypass valve VSV

  • ECM

WIRING DIAGRAM

A005KYQE02

CAUTION / NOTICE / HINT

Note


  • When replacing the ECM, the ECM needs Registration and Initialization Click here.

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

Tech Tips


  • When the ECM must be replaced, before replacing the ECM, perform the "Learning Values Save" function using the intelligent tester. Then after installing the new ECM, perform all of the initialization/registrations for the "Learning Values Write" function by following the instructions shown on the tester display.

  • Read freeze frame data using the intelligent tester. 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 EGR COOLER BYPASS VALVE VSV (OPERATION)


    1. A005ID3E05
      Text in Illustration
      *a VSV ON
      *b VSV OFF

      Remove the EGR cooler bypass valve VSV.

    2. Apply the battery voltage across the terminals.

    3. Check that the air flows.

      OK
      VSV Operation Specified Condition
      VSV ON Air from port E flows out through port F.
      VSV OFF Air from port E flows out through the air filter.

    NG

    REPLACE EGR COOLER BYPASS VALVE VSV Click here

    OK

  2. CHECK HARNESS AND CONNECTOR (EGR COOLER BYPASS VALVE VSV - ECM)


    1. Disconnect the EGR cooler bypass valve VSV connector.

    2. Disconnect the ECM connector.

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

      Standard Resistance (Check for Open)
      Tester Connection Condition Specified Condition
      B62-2 - A59-40 (ECBV) Always Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition
      B62-2 or A59-40 (ECBV) - Body ground Always 10 kΩ or higher

    4. Reconnect the EGR cooler bypass valve VSV connector.

    5. Reconnect the ECM connector.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (EGR COOLER BYPASS VALVE VSV - NO. 1 INTEGRATION RELAY)


    1. Disconnect the EGR cooler bypass valve VSV connector.

    2. Remove the No. 1 integration relay from the engine room main relay block.

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

      Standard Resistance (Check for Open)
      Tester Connection Condition Specified Condition
      B62-1 - 1E-3 Always Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition
      B62-1 or 1E-3 - Body ground Always 10 kΩ or higher

    4. Reconnect the EGR cooler bypass valve VSV connector.

    5. Reinstall the No. 1 integration relay.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR Click here

    OK

  4. CHECK HARNESS AND CONNECTOR (POWER SOURCE)


    1. A005JJXE02
      Text in Illustration
      *1

      Front view of wire harness connector

      (to EGR Cooler Bypass Valve VSV)

      Disconnect the EGR cooler bypass valve VSV connector.

    2. Turn the ignition switch to ON.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      B62-1 - Body ground Ignition switch ON 11 to 14 V

    4. Reconnect the EGR cooler bypass valve VSV connector.


    NG

    CHECK ECM POWER SOURCE CIRCUIT Click here

    OK

  5. REPLACE ECM


    1. Replace the ECM Click here.


    NEXT

    CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED Click here

  6. CHECK ECM POWER SOURCE CIRCUIT


    1. Check the ECM power source circuit Click here.


    NEXT

    CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED Click here

  7. REPLACE EGR COOLER BYPASS VALVE VSV


    1. Replace the EGR cooler bypass valve VSV Click here.


    NEXT

    CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED Click here

  8. REPAIR OR REPLACE HARNESS OR CONNECTOR


    NEXT

  9. CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED


    1. Connect the intelligent tester to the DLC3.

    2. Clear the DTCs Click here.

    3. Turn the ignition switch off and wait for 30 seconds or more.

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

    5. Enter the following menus: Powertrain / Engine and ECT / DTC / Pending.

    6. Confirm that the DTC is not output again.


    NEXT

    END