ECD SYSTEM(w/ DPF), Diagnostic DTC:P245A, P245C, P245D

DTC Code DTC Name
P245A Exhaust Gas Recirculation Cooler Bypass Control Circuit / Open
P245C Exhaust Gas Recirculation Cooler Bypass Control Circuit Low
P245D Exhaust Gas Recirculation 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.

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

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

(1 trip detection logic)

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

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

  • ECM

Over temp of VSV circuit in ECM

(2 trip detection logic)

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

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

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

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) control circuit

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

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

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) control circuit

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

  • ECM

WIRING DIAGRAM

A01VLT1E11
A01VLT1E12

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


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


    NG

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

    OK

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


    1. Disconnect the B62 No. 1 vacuum switching valve assembly connector.

    2. Disconnect the B104 ECM connector (for LHD).

    3. Disconnect the B103 ECM connector (for RHD).

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      B62-2 - B104-58 (ECBV) Always Below 1 Ω
      B62-2 or B104-58 (ECBV) - Body ground Always 10 kΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      B62-2 - B103-58 (ECBV) Always Below 1 Ω
      B62-2 or B103-58 (ECBV) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (NO. 1 VACUUM SWITCHING VALVE ASSEMBLY - NO. 1 INTEGRATION RELAY)


    1. Disconnect the B62 No. 1 vacuum switching valve assembly connector.

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

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      B62-1 - 1E-3 Always Below 1 Ω
      B62-1 or 1E-3 - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR Click here

    OK

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


    1. A01VH58E02
      Text in Illustration
      *a

      Front view of wire harness connector

      (to No. 1 Vacuum Switching Valve Assembly)

      Disconnect the No. 1 vacuum 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
      B62-1 - Body ground Ignition switch ON 11 to 14 V

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


    1. Replace the No. 1 vacuum switching valve assembly 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 GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Clear the DTCs Click here.

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

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

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

    8. Confirm that the DTC is not output again.


    NEXT

    END