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СИСТЕМА ECD, Diagnostic DTC:P245C, P245D

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DTC Code DTC Name
P245C Exhaust Gas Recirculation Cooler Bypass Control Circuit Low Bank 1
P245D Exhaust Gas Recirculation Cooler Bypass Control Circuit High Bank 1
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DESCRIPTION

Refer to DTC P245A.

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DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory
P245C Exhaust Gas Recirculation Cooler Bypass Control Circuit Low Bank 1

Short to ground detected in EGR cooler bypass switching valve assembly circuit for 0.22 seconds.

(3 trip detection logic)

  • EGR cooler bypass switching valve assembly

  • Open or short in EGR cooler bypass switching valve assembly circuit

  • ECM

 Does not come on DTC stored
P245D Exhaust Gas Recirculation Cooler Bypass Control Circuit High Bank 1

Short to +B detected in EGR cooler bypass switching valve assembly circuit for 0.22 seconds.

(3 trip detection logic)

  • EGR cooler bypass switching valve assembly

  • Open or short in EGR cooler bypass switching valve assembly circuit

  • ECM

 Does not come on DTC stored
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WIRING DIAGRAM

Refer to DTC P245A.

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CAUTION / NOTICE / HINT

Note:

  • When replacing the ECM, the ECM needs registration and initialization.

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

Tip:

  • When the ECM must be replaced, before replacing the ECM, perform the "Learning Values Save" function using the GTS. 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 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.

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PROCEDURE


  1. Click here

    INSPECT EGR COOLER BYPASS SWITCHING VALVE ASSEMBLY


    1. Inspect the EGR cooler bypass switching valve assembly.

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      Result
      Proceed to
      OK
      NG

  2. Click here

    CHECK HARNESS AND CONNECTOR (EGR COOLER BYPASS SWITCHING VALVE ASSEMBLY - ECM)


    1. Disconnect the EGR cooler bypass 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
      B216-2 (ECBV) - B220-16 (ECBV) Always Below 1 Ω
      B216-2 (ECBV) or B220-16 (ECBV) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

  3. *a Front view of wire harness connector (to EGR Cooler Bypass Switching Valve Assembly)
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    CHECK HARNESS AND CONNECTOR (POWER SOURCE)


    1. Disconnect the EGR cooler bypass switching valve assembly 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
      B216-1 (+B) - Body ground Ignition switch ON 11 to 14 V
      Result
      Proceed to
      OK
      NG

  4. Click here

    REPLACE ECM


    1. Replace the ECM.

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      Result
      Proceed to
      NEXT

  5. Click here

    CHECK HARNESS AND CONNECTOR (EGR COOLER BYPASS SWITCHING VALVE ASSEMBLY - EFI MAIN RELAY)


    1. Disconnect the EGR cooler bypass switching valve assembly connector.

    2. Remove the EFI MAIN relay from the engine room relay block and junction block.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      B216-1 (+B) - 3 (EFI MAIN relay holder) Always Below 1 Ω
      B216-1 (+B) or 3 (EFI MAIN relay holder) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

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    CHECK ECM POWER SOURCE CIRCUIT


    1. Check the ECM power source circuit.

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      Result
      Proceed to
      NEXT

  7. Click here

    REPAIR OR REPLACE HARNESS OR CONNECTOR


    1. Repair or replace the harness or connector.

      Result
      Proceed to
      NEXT

  8. Click here

    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.


      1. Powertrain > Engine and ECT > Clear DTCs


    4. Turn the ignition switch off and wait for 60 seconds or more [A].

    5. Perform road test [B].

    6. Repeat [A] and [B] for the number of trips detected.

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


      1. Powertrain > Engine > Trouble Codes


    8. Confirm that the DTC is not output again.

      Result
      Proceed to
      NEXT

    • NEXT

      END

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    REPLACE EGR COOLER BYPASS SWITCHING VALVE ASSEMBLY


    1. Replace the EGR cooler bypass switching valve assembly.

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      Result
      Proceed to
      NEXT