Ecd System (W/O 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 EDU (POWER SOURCE)

INSPECT FUSE (EFI)

INSPECT EDU RELAY (EDU 1 OR EDU 2)

INSPECT INTEGRATION NO.1 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/o 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 P062D (Click here).

INSPECTION PROCEDURE

1.CHECK EDU (POWER SOURCE)

  1. Disconnect the No. 1 injector driver (EDU) connectors.



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

  1. Disconnect the No. 2 injector driver (EDU) connectors.

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

    Standard Voltage:
    No. 1
    Tester Connection
    		Switch Condition
    		Specified Condition
    C74-8 (+B) - C73-1 (GND)
    		Ignition switch ON
    		11 to 14 V
    No. 2
    Tester Connection
    		Switch Condition
    		Specified Condition
    C76-8 (+B) - C75-1 (GND)
    		Ignition switch ON
    		11 to 14 V


NG
Go to step 2
OK

REPLACE INJECTOR DRIVER (No. 1 or No. 2) (Click here)

2.INSPECT FUSE (EFI)
Land Cruiser. Urj200, 202 Grj200 Vdj200.1Vd-Ftv Engine Control.Ecd System (W/ Dpf).Ecd System (W/O 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 NO.1 RELAY (EFI OR EFI MAIN 2)

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



NG
REPLACE INTEGRATION NO.1 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/O 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 (Check for Open):
    No. 1
    Tester Connection
    		Condition
    		Specified Condition
    EDU 1 relay (5) - C74-8 (+B)
    		Always
    		Below 1 Ω
    No. 2
    Tester Connection
    		Condition
    		Specified Condition
    EDU 2 relay (5) - C76-8 (+B)
    		Always
    		Below 1 Ω
    Standard Resistance (Check for Short):
    No. 1
    Tester Connection
    		Condition
    		Specified Condition
    EDU 1 relay (5) or C74-8 (+B) - Body ground
    		Always
    		10 kΩ or higher
    No. 2
    Tester Connection
    		Condition
    		Specified Condition
    EDU 2 relay (5) or C76-8 (+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/O 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 (Check for Open):
    No. 1 (LHD)
    Tester Connection
    		Condition
    		Specified Condition
    EDU 1 relay (2) - A38-45 (IREL)
    		Always
    		Below 1 Ω
    No. 2 (LHD)
    Tester Connection
    		Condition
    		Specified Condition
    EDU 2 relay (2) - A38-46 (IRL2)
    		Always
    		Below 1 Ω
    No. 1 (RHD)
    Tester Connection
    		Condition
    		Specified Condition
    EDU 1 relay (2) - A52-45 (IREL)
    		Always
    		Below 1 Ω
    No. 2 (RHD)
    Tester Connection
    		Condition
    		Specified Condition
    EDU 2 relay (2) - A52-46 (IRL2)
    		Always
    		Below 1 Ω
    Standard Resistance (Check for Short):
    No. 1 (LHD)
    Tester Connection
    		Condition
    		Specified Condition
    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) or A38-46 (IRL2) - Body ground
    		Always
    		10 kΩ or higher
    No. 1 (RHD)
    Tester Connection
    		Condition
    		Specified Condition
    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) 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/O Dpf) Injector Circuit
Land Cruiser. Urj200, 202 Grj200 Vdj200.1Vd-Ftv Engine Control.Ecd System (W/ Dpf).Ecd System (W/O 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 (Check for Open):
    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
    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
    Standard Resistance (Check for Short):
    No. 1
    Tester Connection
    		Condition
    		Specified Condition
    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 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
    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
    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
    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
    Standard Resistance (Check for Short):
    No. 1 (LHD)
    Tester Connection
    		Condition
    		Specified Condition
    1B-2 or A38-44 (MREL) - Body ground
    		Always
    		10 kΩ or higher
    No. 2 (LHD)
    Tester Connection
    		Condition
    		Specified Condition
    1A-2 or A38-44 (MREL) - Body ground
    		Always
    		10 kΩ or higher
    No. 1 (RHD)
    Tester Connection
    		Condition
    		Specified Condition
    1B-2 or A52-44 (MREL) - Body ground
    		Always
    		10 kΩ or higher
    No. 2 (RHD)
    Tester Connection
    		Condition
    		Specified Condition
    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/O 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
    C73-1 (GND) - Body ground
    		Always
    		Below 1 Ω
    Standard Resistance:
    No. 2
    Tester Connection
    		Condition
    		Specified Condition
    C75-1 (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)