Ecd System (W/O Dpf) Ecm Power Source 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

INSPECT INTEGRATION NO.1 RELAY (INTEGRATION RELAY - BODY GROUND)

INSPECT INTEGRATION NO.1 RELAY (EFI RELAY AND IG2 RELAY)

INSPECT ECM (IGSW VOLTAGE)

CHECK HARNESS AND CONNECTOR (INTEGRATION RELAY - ECM)

CHECK HARNESS AND CONNECTOR (INTEGRATION RELAY - ECM)

CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - INTEGRATION RELAY)

CHECK HARNESS AND CONNECTOR (IGNITION OR STARTER SWITCH ASSEMBLY - INTEGRATION RELAY)

INSPECT IGNITION OR STARTER SWITCH ASSEMBLY

ECD SYSTEM (w/o DPF) - ECM Power Source Circuit


DESCRIPTION

When the ignition switch is turned to ON, the battery voltage is applied to the IGSW terminal of the ECM. The output signal from the MREL terminal of the ECM causes current to flow to the coil, closing the contacts of the integration relay (EFI MAIN relay) and supplying power to terminal +B of the ECM.

WIRING DIAGRAM


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


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


INSPECTION PROCEDURE

1.INSPECT INTEGRATION NO.1 RELAY (INTEGRATION RELAY - BODY GROUND)
Land Cruiser. Urj200, 202 Grj200 Vdj200.1Vd-Ftv Engine Control.Ecd System (W/ Dpf).Ecd System (W/O Dpf) Ecm Power Source Circuit

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

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

    Standard Voltage:
    Tester Connection
    		Condition
    		Specified Condition
    1C-1 - Body ground
    		Always
    		11 to 14 V

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    1B-3 - Body ground
    		Always
    		Below 1 Ω
    1B-7 - Body ground
    		Always
    		Below 1 Ω

  1. Reinstall the integration relay.



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


2.INSPECT INTEGRATION NO.1 RELAY (EFI RELAY AND IG2 RELAY)
Land Cruiser. Urj200, 202 Grj200 Vdj200.1Vd-Ftv Engine Control.Ecd System (W/ Dpf).Ecd System (W/O Dpf) Ecm Power Source Circuit

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

  1. Inspect the EFI MAIN fuse and the IG2 MAIN fuse.

    1. Remove the EFI MAIN fuse and IG2 MAIN fuse from the integration relay.

    2. 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
      IG2 MAIN fuse
      		Always
      		Below 1 Ω

  1. Inspect the EFI relay and the IG2 relay.

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

      Standard Resistance:
      Tester Connection
      		Condition
      		Specified Condition
      1C-1 - 1B-4
      		Battery voltage not applied to terminals 1B-2 and 1B-3
      		10 kΩ or higher
      Battery voltage applied to terminals 1B-2 and 1B-3
      		Below 1 Ω
      1C-1 - 1B-8
      		Battery voltage not applied to terminals 1B-7 and 1B-6
      		10 kΩ or higher
      Battery voltage applied to terminals 1B-7 and 1B-6
      		Below 1 Ω


NG
REPLACE INTEGRATION RELAY
OK


3.INSPECT ECM (IGSW VOLTAGE)
Land Cruiser. Urj200, 202 Grj200 Vdj200.1Vd-Ftv Engine Control.Ecd System (W/ Dpf).Ecd System (W/O Dpf) Ecm Power Source Circuit

  1. Disconnect the ECM connectors.

  1. Turn the ignition switch to ON.

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

    Standard Voltage:
    for LHD
    Tester Connection
    		Switch Condition
    		Specified Condition
    A38-28 (IGSW) - C45-81 (E1)
    		Ignition switch ON
    		11 to 14 V
    for RHD
    Tester Connection
    		Switch Condition
    		Specified Condition
    A52-28 (IGSW) - C46-81 (E1)
    		Ignition switch ON
    		11 to 14 V


NG
Go to step 5
OK


4.CHECK HARNESS AND CONNECTOR (INTEGRATION RELAY - ECM)
Land Cruiser. Urj200, 202 Grj200 Vdj200.1Vd-Ftv Engine Control.Ecd System (W/ Dpf).Ecd System (W/O Dpf) Ecm Power Source Circuit

  1. Check the harness and the connectors between the integration relay and the ECM.

  1. Remove the integration relay 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):
    for LHD
    Tester Connection
    		Condition
    		Specified Condition
    A38-44 (MREL) - 1B-2
    		Always
    		Below 1 Ω
    A38-2 (+B) - 1B-4
    		Always
    		Below 1 Ω
    for RHD
    Tester Connection
    		Condition
    		Specified Condition
    A52-44 (MREL) - 1B-2
    		Always
    		Below 1 Ω
    A52-2 (+B) - 1B-4
    		Always
    		Below 1 Ω

    Standard Resistance (Check for Short):
    for LHD
    Tester Connection
    		Condition
    		Specified Condition
    A38-44 (MREL) or 1B-2 - Body ground
    		Always
    		10 kΩ or higher
    A38-2 (+B) or 1B-4 - Body ground
    		Always
    		10 kΩ or higher
    for RHD
    Tester Connection
    		Condition
    		Specified Condition
    A52-44 (MREL) or 1B-2 - Body ground
    		Always
    		10 kΩ or higher
    A52-2 (+B) or 1B-4 - Body ground
    		Always
    		10 kΩ or higher

  1. Reconnect the ECM connector.

  1. Reinstall the integration relay.



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE ECM (Click here)

5.CHECK HARNESS AND CONNECTOR (INTEGRATION RELAY - ECM)
Land Cruiser. Urj200, 202 Grj200 Vdj200.1Vd-Ftv Engine Control.Ecd System (W/ Dpf).Ecd System (W/O Dpf) Ecm Power Source Circuit

  1. Check the harness and the connectors between the integration relay and the ECM.

  1. Remove the integration relay 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):
    for LHD
    Tester Connection
    		Condition
    		Specified Condition
    A38-28 (IGSW) - 1B-8
    		Always
    		Below 1 Ω
    for RHD
    Tester Connection
    		Condition
    		Specified Condition
    A52-28 (IGSW) - 1B-8
    		Always
    		Below 1 Ω

    Standard Resistance (Check for Short):
    for LHD
    Tester Connection
    		Condition
    		Specified Condition
    A38-28 (IGSW) or 1B-8 - Body ground
    		Always
    		10 kΩ or higher
    for RHD
    Tester Connection
    		Condition
    		Specified Condition
    A52-28 (IGSW) or 1B-8 - Body ground
    		Always
    		10 kΩ or higher

  1. Reconnect the ECM connector.

  1. Reinstall the integration relay.


Result
Result
Proceed to
OK (w/ Entry and Start System)
A
OK (w/o Entry and Start System)
B
NG
C


B
Go to step 7

C
REPAIR OR REPLACE HARNESS OR CONNECTOR
A


6.CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - INTEGRATION RELAY)
Land Cruiser. Urj200, 202 Grj200 Vdj200.1Vd-Ftv Engine Control.Ecd System (W/ Dpf).Ecd System (W/O Dpf) Ecm Power Source Circuit

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

  1. Disconnect the IG2D main body ECU connector.

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

    Standard Resistance (Check for Open):
    Tester Connection
    		Condition
    		Specified Condition
    E2-11 (IG2D) - 1B-6
    		Always
    		Below 1 Ω
    Standard Resistance (Check for Short):
    Tester Connection
    		Condition
    		Specified Condition
    E2-11 (IG2D) or 1B-6 - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

CHECK ENTRY AND START SYSTEM

7.CHECK HARNESS AND CONNECTOR (IGNITION OR STARTER SWITCH ASSEMBLY - INTEGRATION RELAY)

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

  1. Disconnect the Ignition or Starter Switch Assembly connector.

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

    Standard Resistance (Check for Open):
    Tester Connection
    		Condition
    		Specified Condition
    E93-6 (IG2) - 1B-6
    		Always
    		Below 1 Ω
    Standard Resistance (Check for Short):
    Tester Connection
    		Condition
    		Specified Condition
    E93-6 (IG2) or 1B-6 - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


8.INSPECT IGNITION OR STARTER SWITCH ASSEMBLY

  1. Inspect the Ignition or Starter Switch Assembly (Click here).



NG
REPLACE IGNITION OR STARTER SWITCH ASSEMBLY
OK

REPAIR OR REPLACE HARNESS OR CONNECTOR (IGNITION SWITCH - BATTERY)