Ecd System (W/ Dpf) Injector Circuit

Engine Hybrid System. Land Cruiser. Urj200, 202 Grj200 Vdj200
1Vd-Ftv Engine Control. Land Cruiser. Urj200, 202 Grj200 Vdj200

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK TERMINAL VOLTAGE (POWER SOURCE)

INSPECT FUSE (EFI MAIN AND EFI MAIN 2)

INSPECT EDU RELAY (EDU 1 OR EDU 2)

INSPECT INTEGRATION RELAY (EFI OR EFI MAIN 2)

CHECK HARNESS AND CONNECTOR (EDU RELAY - EDU)

CHECK HARNESS AND CONNECTOR (EDU RELAY - ECM)

CHECK HARNESS AND CONNECTOR (INTEGRATION RELAY - EDU RELAY, ECM, BODY GROUND)

CHECK HARNESS AND CONNECTOR (EDU - BODY GROUND)

ECD SYSTEM (w/ DPF) - Injector Circuit


DESCRIPTION

The injector driver drives the injectors at high speeds with a high-voltage DC/DC converter. The ECM constantly monitors the injector driver and stops the engine if an abnormal condition is detected.

WIRING DIAGRAM

Refer to DTC P0201 (Click here).

INSPECTION PROCEDURE

1.CHECK TERMINAL VOLTAGE (POWER SOURCE)

  1. Turn the engine switch off.

    HINT:
    Powering of the EDU relay may be prohibited by the fail-safe function. Therefore, turn the engine switch off to disable the failsafe function before performing this inspection.


    Land Cruiser. Urj200, 202 Grj200 Vdj200.1Vd-Ftv Engine Control.Ecd System (W/ Dpf).Ecd System (W/ Dpf) Injector Circuit

  1. Disconnect the No. 1 or No. 2 injector driver (EDU) connector.

  1. Turn the engine switch on (IG).

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

    Standard Voltage:
    Tester Connection
    		Switch Condition
    		Specified Condition
    C150-3 (+B) - C150-1 (GND)
    		Engine switch on (IG)
    		11 to 14 V
    C154-3 (+B) - C154-1 (GND)
    		Engine switch on (IG)
    		11 to 14 V
    Text in Illustration
    *A
    		for Bank 1 (No. 1 injector Driver (EDU))
    *B
    		for Bank 2 (No. 2 injector Driver (EDU))
    *a
    		Front view of wire harness connector
    (to Injector Driver (EDU))

  1. Reconnect the No. 1 or No. 2 injector driver (EDU) connector.



NG
Go to step 2
OK

CHECK FOR INTERMITTENT PROBLEMS (Click here)

2.INSPECT FUSE (EFI MAIN AND EFI MAIN 2)
Land Cruiser. Urj200, 202 Grj200 Vdj200.1Vd-Ftv Engine Control.Ecd System (W/ Dpf).Ecd System (W/ Dpf) Injector Circuit

  1. Remove the EFI MAIN and EFI MAIN 2 fuse from the engine room relay block.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    EFI MAIN fuse
    		Always
    		Below 1 Ω
    EFI MAIN 2 fuse
    		Always
    		Below 1 Ω


NG
CHECK FOR SHORTS IN ALL HARNESSES AND CONNECTORS CONNECTED TO FUSE AND REPLACE FUSE
OK


3.INSPECT EDU RELAY (EDU 1 OR EDU 2)

  1. Inspect the EDU relay (EDU 1 or EDU 2) (Click here).



NG
REPLACE EDU RELAY (EDU 1 OR EDU 2)
OK


4.INSPECT INTEGRATION RELAY (EFI OR EFI MAIN 2)

  1. Inspect the integration relay (EFI or EFI MAIN 2) (Click here).



NG
REPLACE INTEGRATION RELAY
OK


5.CHECK HARNESS AND CONNECTOR (EDU RELAY - EDU)

Land Cruiser. Urj200, 202 Grj200 Vdj200.1Vd-Ftv Engine Control.Ecd System (W/ Dpf).Ecd System (W/ Dpf) Injector Circuit

  1. Remove the EDU relay (EDU 1 or EDU 2) from the engine room relay block.

  1. Remove the EDU connector.

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

    Standard Resistance:
    No. 1
    Tester Connection
    		Condition
    		Specified Condition
    EDU 1 relay (5) - C150-3 (+B)
    		Always
    		Below 1 Ω
    EDU 1 relay (5) or C150-3 (+B) - Body ground
    		Always
    		10 kΩ or higher
    No. 2
    Tester Connection
    		Condition
    		Specified Condition
    EDU 2 relay (5) - C154-3 (+B)
    		Always
    		Below 1 Ω
    EDU 2 relay (5) or C154-3 (+B) - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


6.CHECK HARNESS AND CONNECTOR (EDU RELAY - ECM)
Land Cruiser. Urj200, 202 Grj200 Vdj200.1Vd-Ftv Engine Control.Ecd System (W/ Dpf).Ecd System (W/ Dpf) Injector Circuit

  1. Remove the EDU relay (EDU 1 or EDU 2) from the engine room relay block.

  1. Disconnect the ECM connector.

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

    Standard Resistance:
    No. 1 (LHD)
    Tester Connection
    		Condition
    		Specified Condition
    EDU 1 relay (2) - A38-45 (IREL)
    		Always
    		Below 1 Ω
    EDU 1 relay (2) or A38-45 (IREL) - Body ground
    		Always
    		10 kΩ or higher
    No. 2 (LHD)
    Tester Connection
    		Condition
    		Specified Condition
    EDU 2 relay (2) - A38-46 (IRL2)
    		Always
    		Below 1 Ω
    EDU 2 relay (2) or A38-46 (IRL2) - Body ground
    		Always
    		10 kΩ or higher
    No. 1 (RHD)
    Tester Connection
    		Condition
    		Specified Condition
    EDU 1 relay (2) - A52-45 (IREL)
    		Always
    		Below 1 Ω
    EDU 1 relay (2) or A52-45 (IREL) - Body ground
    		Always
    		10 kΩ or higher
    No. 2 (RHD)
    Tester Connection
    		Condition
    		Specified Condition
    EDU 2 relay (2) - A52-46 (IRL2)
    		Always
    		Below 1 Ω
    EDU 2 relay (2) or A52-46 (IRL2) - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


7.CHECK HARNESS AND CONNECTOR (INTEGRATION RELAY - EDU RELAY, ECM, BODY GROUND)
Land Cruiser. Urj200, 202 Grj200 Vdj200.1Vd-Ftv Engine Control.Ecd System (W/ Dpf).Ecd System (W/ Dpf) Injector Circuit
Land Cruiser. Urj200, 202 Grj200 Vdj200.1Vd-Ftv Engine Control.Ecd System (W/ Dpf).Ecd System (W/ Dpf) Injector Circuit

  1. Remove the integration relay from the engine room relay block.

  1. Remove the EDU relay (EDU 1 or EDU 2).

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

    Standard Resistance:
    No. 1
    Tester Connection
    		Condition
    		Specified Condition
    1B-4 - EDU 1 relay (1)
    		Always
    		Below 1 Ω
    1B-4 - EDU 1 relay (3)
    		Always
    		Below 1 Ω
    1B-4 or EDU 1 relay (1) - Body ground
    		Always
    		10 kΩ or higher
    1B-4 or EDU 1 relay (3) - Body ground
    		Always
    		10 kΩ or higher
    No. 2
    Tester Connection
    		Condition
    		Specified Condition
    1A-4 - EDU 2 relay (1)
    		Always
    		Below 1 Ω
    1A-4 - EDU 2 relay (3)
    		Always
    		Below 1 Ω
    1A-4 or EDU 2 relay (1) - Body ground
    		Always
    		10 kΩ or higher
    1A-4 or EDU 2 relay (3) - Body ground
    		Always
    		10 kΩ or higher

  1. Disconnect the ECM connector.

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

    Standard Resistance (Check for Open):
    No. 1 (LHD)
    Tester Connection
    		Condition
    		Specified Condition
    1B-2 - A38-44 (MREL)
    		Always
    		Below 1 Ω
    1B-3 - Body ground
    		Always
    		Below 1 Ω
    1B-2 or A38-44 (MREL) - Body ground
    		Always
    		10 kΩ or higher
    No. 2 (LHD)
    Tester Connection
    		Condition
    		Specified Condition
    1A-2 - A38-44 (MREL)
    		Always
    		Below 1 Ω
    1A-3 - Body ground
    		Always
    		Below 1 Ω
    1A-2 or A38-44 (MREL) - Body ground
    		Always
    		10 kΩ or higher
    No. 1 (RHD)
    Tester Connection
    		Condition
    		Specified Condition
    1B-2 - A52-44 (MREL)
    		Always
    		Below 1 Ω
    1B-3 - Body ground
    		Always
    		Below 1 Ω
    1B-2 or A52-44 (MREL) - Body ground
    		Always
    		10 kΩ or higher
    No. 2 (RHD)
    Tester Connection
    		Condition
    		Specified Condition
    1A-2 - A52-44 (MREL)
    		Always
    		Below 1 Ω
    1A-3 - Body ground
    		Always
    		Below 1 Ω
    1A-2 or A52-44 (MREL) - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


8.CHECK HARNESS AND CONNECTOR (EDU - BODY GROUND)


    Land Cruiser. Urj200, 202 Grj200 Vdj200.1Vd-Ftv Engine Control.Ecd System (W/ Dpf).Ecd System (W/ Dpf) Injector Circuit

  1. Disconnect the EDU connector.

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

    Standard Resistance:
    No. 1
    Tester Connection
    		Condition
    		Specified Condition
    C150-1 (GND) - Body ground
    		Always
    		Below 1 Ω
    Standard Resistance:
    No. 2
    Tester Connection
    		Condition
    		Specified Condition
    C154-1 (GND) - Body ground
    		Always
    		Below 1 Ω


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR (EDU - BODY GROUND)
OK

CHECK ECM POWER SOURCE CIRCUIT (Click here)