Ecd System (W/ 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 RELAY (POWER SOURCE)

CHECK HARNESS AND CONNECTOR (INTEGRATION RELAY - BODY GROUND)

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

CHECK HARNESS AND CONNECTOR (INTEGRATION RELAY - ECM)

CHECK HARNESS AND CONNECTOR (ECM - BODY GROUND)

INSPECT ECM (IGSW VOLTAGE)

CHECK HARNESS AND CONNECTOR (INTEGRATION RELAY - ECM)

CHECK ENTRY AND START SYSTEM (SMART KEY ECU ASSEMBLY - INTEGRATION RELAY)

ECD SYSTEM (w/ 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 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/ Dpf) Ecm Power Source Circuit


INSPECTION PROCEDURE

NOTICE:
After replacing the ECM, the new ECM needs registration (Click here) and initialization (Click here).
1.INSPECT INTEGRATION RELAY (POWER SOURCE)
Land Cruiser. Urj200, 202 Grj200 Vdj200.1Vd-Ftv Engine Control.Ecd System (W/ Dpf).Ecd System (W/ 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:
    for LHD
    Tester Connection
    		Condition
    		Specified Condition
    1Y-1 - Body ground
    		Always
    		11 to 14 V
    for RHD
    Tester Connection
    		Condition
    		Specified Condition
    1X-1 - Body ground
    		Always
    		11 to 14 V
*a
Front view of wire harness connector
(Integration relay)
*b
for LHD
*c
for RHD


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


2.CHECK HARNESS AND CONNECTOR (INTEGRATION RELAY - BODY GROUND)

  1. Remove the integration relay 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
    1S-4 - Body ground
    		Always
    		Below 1 Ω


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


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

  1. Inspect the integration relay (Click here).



NG
REPLACE INTEGRATION RELAY
OK


4.CHECK HARNESS AND CONNECTOR (INTEGRATION RELAY - 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:

    for LHD
    Tester Connection
    		Condition
    		Specified Condition
    A38-44 (MREL) - 1S-8
    		Always
    		Below 1 Ω
    A38-2 (+B) - 1S-11
    		Always
    		Below 1 Ω
    A38-1 (+B2) - 1S-11
    		Always
    		Below 1 Ω
    A38-44 (MREL) or 1S-8 - Body ground
    		Always
    		10 kΩ or higher
    A38-2 (+B) or 1S-11 - Body ground
    		Always
    		10 kΩ or higher
    A38-1 (+B2) or 1S-11 - Body ground
    		Always
    		10 kΩ or higher

    for RHD
    Tester Connection
    		Condition
    		Specified Condition
    A52-44 (MREL) - 1S-8
    		Always
    		Below 1 Ω
    A52-2 (+B) - 1S-11
    		Always
    		Below 1 Ω
    A52-1 (+B2) - 1S-11
    		Always
    		Below 1 Ω
    A52-44 (MREL) or 1S-8 - Body ground
    		Always
    		10 kΩ or higher
    A52-2 (+B) or 1S-11 - Body ground
    		Always
    		10 kΩ or higher
    A52-1 (+B2) or 1S-11 - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


5.CHECK HARNESS AND CONNECTOR (ECM - BODY GROUND)

  1. Disconnect the ECM connector.

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

    Standard Resistance:
    for LHD
    Tester Connection
    		Condition
    		Specified Condition
    C45-81 - Body ground
    		Always
    		Below 1 Ω
    for RHD
    Tester Connection
    		Condition
    		Specified Condition
    C46-81 - Body ground
    		Always
    		Below 1 Ω


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


6.INSPECT ECM (IGSW VOLTAGE)
Land Cruiser. Urj200, 202 Grj200 Vdj200.1Vd-Ftv Engine Control.Ecd System (W/ Dpf).Ecd System (W/ 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


OK
REPLACE ECM (Click here)

NG
Go to step 7

7.CHECK HARNESS AND CONNECTOR (INTEGRATION RELAY - ECM)

  1. Disconnect the ECM connector.

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

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

    Standard Resistance:

    for LHD
    Tester Connection
    		Condition
    		Specified Condition
    A38-28 (IGSW) - 1P-7
    		Always
    		Below 1 Ω
    A38-28 (IGSW) or 1P-7 - Body ground
    		Always
    		10 kΩ or higher

    for RHD
    Tester Connection
    		Condition
    		Specified Condition
    A52-28 (IGSW) - 1P-7
    		Always
    		Below 1 Ω
    A52-28 (IGSW) or 1P-7 - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


8.CHECK ENTRY AND START SYSTEM (SMART KEY ECU ASSEMBLY - INTEGRATION RELAY)

  1. Disconnect the smart key ECU assembly connector.

  1. Disconnect the integration relay connector.

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

    Standard Resistance:

    Tester Connection
    		Condition
    		Specified Condition
    E128-3 (IG1D) - 1R-2
    		Always
    		Below 1 Ω
    E128-3 (IG1D) or 1R-2 - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

CHECK SMART KEY SYSTEM