Dtc P245C Exhaust Gas Recirculation Cooler Bypass Control Circuit Low


DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

INSPECT NO. 1 VACUUM SWITCHING VALVE ASSEMBLY (FOR EGR BYPASS VALVE)

CHECK NO. 1 VACUUM SWITCHING VALVE ASSEMBLY (FOR EGR BYPASS VALVE) (POWER SOURCE CIRCUIT)

CHECK HARNESS AND CONNECTOR (NO. 1VACUUM SWITCHING VALVE ASSEMBLY (FOR EGR BYPASS VALVE) - ECM)

REPLACE ECM

REPLACE NO. 1 VACUUM SWITCHING VALVE ASSEMBLY (FOR EGR BYPASS VALVE)

REPAIR OR REPLACE HARNESS OR CONNECTOR

CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED

DTC P245C Exhaust Gas Recirculation Cooler Bypass Control Circuit Low

DTC P245D Exhaust Gas Recirculation Cooler Bypass Control Circuit High


DESCRIPTION

The No. 1 vacuum switching valve assembly (for EGR bypass valve) is controlled by the ECM, and the opening and closing of the EGR cooler bypass valve is performed according to the vacuum applied by the vacuum pump.

P245C
DTC Detection Drive Pattern
DTC Detection Condition
Trouble Area
Engine switch on (IG) for 3 seconds or more
Open or short in the No. 1 vacuum switching valve assembly (for EGR bypass valve) for 3 seconds (1 trip detection logic).
  1. Open or short in No. 1 vacuum switching valve assembly (for EGR bypass valve) circuit
  2. No. 1 vacuum switching valve assembly (for EGR bypass valve)
  3. ECM

P245D
DTC Detection Drive Pattern
DTC Detection Condition
Trouble Area
Engine switch on (IG) for 3 seconds or more
Open or short in the No. 1 vacuum switching valve assembly (for EGR bypass valve) for 3 seconds (1 trip detection logic).
  1. Open or short in No. 1 vacuum switching valve assembly (for EGR bypass valve) circuit
  2. No. 1 vacuum switching valve assembly (for EGR bypass valve)
  3. ECM

WIRING DIAGRAM


Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.1Gd-Ftv Engine Control.Ecd System. Dtc P245C Exhaust Gas Recirculation Cooler Bypass Control Circuit Low


INSPECTION PROCEDURE

NOTICE:
  1. Inspect the fuses of circuits related to this system before performing the following inspection procedure.
  2. After replacing the ECM, the new ECM needs registration (LandCruiser RM0000012XK0AVX.html) and initialization (LandCruiser RM000000TIN08IX.html).
HINT:
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.
1.INSPECT NO. 1 VACUUM SWITCHING VALVE ASSEMBLY (FOR EGR BYPASS VALVE)

  1. Inspect the No. 1 vacuum switching valve assembly (for EGR bypass valve) (LandCruiser RM000005UJX000X_01_0001.html).



NG
Go to step 5
OK


2.CHECK NO. 1 VACUUM SWITCHING VALVE ASSEMBLY (FOR EGR BYPASS VALVE) (POWER SOURCE CIRCUIT)


    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.1Gd-Ftv Engine Control.Ecd System. Dtc P245C Exhaust Gas Recirculation Cooler Bypass Control Circuit Low

  1. Disconnect the No. 1 vacuum switching valve assembly (for EGR bypass valve) connector.

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

    Standard Voltage:
    Tester Connection
    		Switch Condition
    		Specified Condition
    C142-1 (+B) - Body ground
    		Engine switch on (IG)
    		11 to 14 V
    Text in Illustration
    *a
    		Front view of wire harness connector
    (to No. 1 Vacuum Switching Valve Assembly (for EGR Bypass Valve))

  1. Reconnect the No. 1 vacuum switching valve (for EGR bypass valve) connector.



NG
Go to step 6
OK


3.CHECK HARNESS AND CONNECTOR (NO. 1VACUUM SWITCHING VALVE ASSEMBLY (FOR EGR BYPASS VALVE) - ECM)

  1. Disconnect the No. 1 vacuum switching valve assembly (for EGR bypass valve) connector.

  1. Disconnect the ECM connector.

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

    Standard Resistance:

    Tester Connection
    		Condition
    		Specified Condition
    C142-2 (ECBV) - C149-16 (ECBV)
    		Always
    		Below 1 Ω
    C142-2 (ECBV) or C149-16 (ECBV) - Body ground and other terminals
    		Always
    		10 kΩ or higher

  1. Reconnect the No. 1 vacuum switching valve assembly (for EGR bypass valve) connector.

  1. Reconnect the ECM connector.



NG
Go to step 6
OK


4.REPLACE ECM

  1. Replace the ECM (LandCruiser RM0000013Z002DX.html).



NEXT
Go to step 7

5.REPLACE NO. 1 VACUUM SWITCHING VALVE ASSEMBLY (FOR EGR BYPASS VALVE)

  1. Replace the No. 1 vacuum switching valve assembly (for EGR bypass valve) (LandCruiser RM000005UJZ000X.html).



NEXT
Go to step 7

6.REPAIR OR REPLACE HARNESS OR CONNECTOR

  1. Repair or replace the harness or connector.

    HINT:
    If the voltage at the vacuum switching valve assembly (for EGR bypass valve) connector is not 11 to 14 V, repair or replace the harness and connector between the No. 1 vacuum switching valve assembly (for EGR bypass valve) and No. 1 integration relay.

NEXT


7.CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED

  1. Connect the GTS to the DLC3.

  1. Clear the DTCs (LandCruiser RM000000PDK1ENX.html).

  1. Turn the engine switch on (IG) for 3 seconds.

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

  1. Confirm that the DTC is not output again.


NEXT

END