DTC    P245A    Open in Exhaust Gas Recirculation Cooler Bypass Control Circuit

DTC    P245C    EGR Cooler Bypass Control Circuit Low

DTC    P245D    EGR Cooler Bypass Control Circuit High

for Preparation Click here


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)
  1. Open or short in EGR cooler bypass valve VSV control circuit
  2. EGR cooler bypass valve VSV
  3. 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)
  1. Short in EGR cooler bypass valve VSV control circuit
  2. EGR cooler bypass valve VSV
  3. 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)
  1. Short in EGR cooler bypass valve VSV control circuit
  2. EGR cooler bypass valve VSV
  3. ECM

WIRING DIAGRAM


A198995E06


INSPECTION PROCEDURE

NOTICE:
  1. When replacing the ECM, the ECM needs Registration and Initialization (Click here).
  2. Inspect the fuses for circuits related to this system before performing the following inspection procedure.

HINT:
  1. 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 initializations/registrations for the "Learning Values Write" function by following the instructions shown on the tester display.
  2. 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.

1.INSPECT EGR COOLER BYPASS VALVE VSV (OPERATION)


    A200298E01

  1. Remove the EGR cooler bypass valve VSV.

  1. Apply the battery voltage across the terminals.

  1. 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
Go to step 7
OK


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


    A200299E01

  1. Disconnect the EGR cooler bypass valve VSV connector.

  1. Disconnect the ECM connector.

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

    Standard Resistance (Check for Open):
    Tester Connection
    		Condition
    		Specified Condition
    B51-2 - A19-40 (ECBV)
    		Always
    		Below 1 Ω

    Standard Resistance (Check for Short):
    Tester Connection
    		Condition
    		Specified Condition
    B51-2 or A19-40 (ECBV) - Body ground
    		Always
    		10 kΩ or higher

    Text in Illustration 
    *1
    		Front view of wire harness connector
    (to EGR Cooler Bypass Valve VSV)
    *2
    		Front view of wire harness connector
    (to ECM)

  1. Reconnect the EGR cooler bypass valve VSV connector.

  1. Reconnect the ECM connector.



NG
Go to step 8
OK


3.CHECK HARNESS AND CONNECTOR (EGR COOLER BYPASS VALVE VSV - INTEGRATION RELAY)


    A200300E01

  1. Disconnect the EGR cooler bypass valve VSV connector.

  1. Disconnect the integration relay connector.

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

    Standard Resistance (Check for Open):
    Tester Connection
    		Condition
    		Specified Condition
    B51-1 - 1F-7
    		Always
    		Below 1 Ω

    Standard Resistance (Check for Short):
    Tester Connection
    		Condition
    		Specified Condition
    B51-1 or 1F-7 - Body ground
    		Always
    		10 kΩ or higher

    Text in Illustration 
    *1
    		Front view of wire harness connector
    (to EGR Cooler Bypass Valve VSV)
    *2
    		Front view of wire harness connector
    (to Integration Relay)

  1. Reconnect the EGR cooler bypass valve VSV connector.

  1. Reconnect the integration relay connector.



NG
Go to step 8
OK


4.CHECK HARNESS AND CONNECTOR (POWER SOURCE)


    A200363E01

  1. Disconnect the EGR cooler bypass valve VSV connector.

  1. Turn the ignition switch to ON.

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

    Standard Voltage:
    Tester Connection
    		Switch Condition
    		Specified Condition
    B51-1 - Body ground
    		Ignition switch ON
    		11 to 14 V

    Text in Illustration 
    *1
    		Front view of wire harness connector
    (to EGR Cooler Bypass Valve VSV)

  1. Reconnect the EGR cooler bypass valve VSV connector.



NG
Go to step 6
OK


5.REPLACE ECM

  1. Replace the ECM (Click here).



NEXT
Go to step 9

6.CHECK ECM POWER SOURCE CIRCUIT

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



NEXT
Go to step 9

7.REPLACE EGR COOLER BYPASS VALVE VSV

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



NEXT
Go to step 9

8.REPAIR OR REPLACE HARNESS OR CONNECTOR

NEXT


9.CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED

  1. Connect the intelligent tester to the DLC3.

  1. Clear the DTCs (Click here).

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

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

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

  1. Confirm that the DTC is not output again.


NEXT

END