СИСТЕМА ECD, Diagnostic DTC:P245C, P245D

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

DESCRIPTION

Refer to P1401 Click here.

DTC No. DTC Detection Condition Trouble Area
P245C

Short to ground detected in EGR cooler bypass switching valve assembly circuit for 0.2 seconds or more

(3 trip detection logic)

  • EGR cooler bypass switching valve assembly

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

  • ECM
DTC No. DTC Detection Condition Trouble Area
P245D

Short to +B detected in EGR cooler bypass switching valve assembly circuit for 0.2 seconds or more

(3 trip detection logic)

  • EGR cooler bypass switching valve assembly

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

  • ECM

WIRING DIAGRAM

A01IUT0E13

INSPECTION PROCEDURE

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 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. INSPECT EGR COOLER BYPASS SWITCHING VALVE ASSEMBLY


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


    NG

    REPLACE EGR COOLER BYPASS SWITCHING VALVE ASSEMBLY Click here

    OK

  2. 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) - C84-16 (ECBV) Always Below 1 Ω
      C80-2 (ECBV) or C84-16 (ECBV) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR Click here

    OK

  3. 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
      C80-1 (+B) - Body ground Ignition switch ON 11 to 14 V

    NG

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

    OK

  4. REPLACE ECM


    1. Replace the ECM Click here.


    NEXT

    CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED Click here

  5. 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
      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

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR Click here

    OK

  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 SWITCHING VALVE ASSEMBLY


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


    NEXT

    CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED Click here

  8. REPAIR OR REPLACE HARNESS OR CONNECTOR


    1. Repair or replace the harness or connector.


    NEXT

  9. 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. Turn the ignition switch to ON and wait for 15 seconds or more [B].

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

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

    8. Confirm that the DTC is not output again.


    NEXT

    END