ECD SYSTEM(for Swirl Control Valve), Diagnostic DTC:P245B

DTC Code DTC Name
P245B Exhaust Gas Recirculation Cooler Bypass Control Circuit Range / Performance Bank 1

DESCRIPTION

Refer to DTC P245A (Click here).

DTC No.

DTC Detection Condition

Trouble Area

P245B

EGR cooler bypass switching valve assembly circuit over temperature for 0.05 seconds.

(3 trip detection logic)

  • EGR cooler bypass switching valve assembly

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

  • Cooling fan system

  • ECM

WIRING DIAGRAM

Refer to DTC P245A (Click here).

CAUTION / NOTICE / HINT

Note:

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

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.

PROCEDURE

  1. PERFORM ACTIVE TEST USING GTS (ACTUATOR TEST OF FAN HIGH SPEED AND LOW SPEED)

    1. Connect the GTS to the DLC3.

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

    3. Enter the following menus: Powertrain / Engine and ECT / Active Test / Actuator Test of Fan High Speed and Actuator Test of Fan Low Speed.

      OK

      Cooling fan operates according to operation.

    REPAIR OR REPLACE COOLING FAN SYSTEMClick here

  2. INSPECT EGR COOLER BYPASS SWITCHING VALVE ASSEMBLY

    1. Inspect the EGR cooler bypass switching valve assembly (Click here).

    REPLACE EGR COOLER BYPASS SWITCHING VALVE ASSEMBLYClick here

  3. 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

      C80-2 (ECBV) - C112-16 (ECBV)

      Always

      Below 1 Ω

      C80-2 (ECBV) or C112-16 (ECBV) - Body ground

      Always

      10 kΩ or higher

    REPAIR OR REPLACE HARNESS OR CONNECTORClick here

  4. CHECK HARNESS AND CONNECTOR (POWER SOURCE)

    U122317E02

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

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

      Standard Voltage

      Tester Connection

      Switch Condition

      Specified Condition

      C80-1 (+B) - Body ground

      Ignition switch ON

      11 to 14 V
      Table 1. Text in Illustration

      *a

      Front view of wire harness connector

      (to EGR cooler bypass switching valve assembly)

    REPLACE ECMClick here

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

  5. REPAIR OR REPLACE COOLING FAN SYSTEM

    1. Repair or replace the cooling fan system (Click here).

    CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIREDClick here

  6. REPLACE EGR COOLER BYPASS SWITCHING VALVE ASSEMBLY

    1. Replace the EGR cooler bypass switching valve assembly (Click here).

    CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIREDClick here

  7. 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 No. 1 relay block.

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

      Standard Resistance (for LHD)

      Tester Connection

      Condition

      Specified Condition

      C80-1 (+B) - 3 (EFI MAIN relay holder)

      Always

      Below 1 Ω

      C80-1 (+B) or 3 (EFI MAIN relay holder) - Body ground

      Always

      10 kΩ or higher

      Standard Resistance (for RHD)

      Tester Connection

      Condition

      Specified Condition

      C80-1 (+B) - 5 (EFI MAIN relay holder)

      Always

      Below 1 Ω

      C80-1 (+B) or 5 (EFI MAIN relay holder) - Body ground

      Always

      10 kΩ or higher

    REPAIR OR REPLACE HARNESS OR CONNECTORClick here

  8. CHECK ECM POWER SOURCE CIRCUIT

    1. Check the ECM power source circuit (Click here).

    CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIREDClick here

  9. REPAIR OR REPLACE HARNESS OR CONNECTOR

    1. Repair or replace the harness or connector.

    CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIREDClick here

  10. REPLACE ECM

    1. Replace the ECM (Click here).

  11. 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 (Click here).

    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.

    8. Confirm that the DTC is not output again.

    END