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 HARNESS AND CONNECTOR (POWER SOURCE)

INSPECT EDU RELAY

CHECK HARNESS AND CONNECTOR (INJECTOR DRIVER - INTEGRATION RELAY)

CHECK HARNESS AND CONNECTOR (ECM - INTEGRATION RELAY)

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 P0201 (Click here).

INSPECTION PROCEDURE

1.CHECK HARNESS AND CONNECTOR (POWER SOURCE)


    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
    C74-8 (+B) - C73-1 (GND)
    		Ignition switch ON
    		11 to 14 V
    No. 2
    Tester Connection
    		Condition
    		Specified Condition
    C76-8 (+B) - C75-1 (GND)
    		Ignition switch ON
    		11 to 14 V
*a
Front view of wire harness connector
(to Injector Driver)
*b
for No. 1
*c
for No. 2

  1. Reconnect the injector driver connectors.



NG
Go to step 2
OK

CHECK FOR INTERMITTENT PROBLEMS (Click here)

2.INSPECT EDU RELAY

  1. Inspect the EDU relay (Click here).



NG
REPLACE EDU RELAY
OK


3.CHECK HARNESS AND CONNECTOR (INJECTOR DRIVER - INTEGRATION RELAY)

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

  1. Remove the EDU relay (EDU NO. 1 or EDU NO. 2).

  1. Disconnect the ECM connector.

  1. Disconnect the injector driver connector.

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

    Standard Resistance:

    for No. 1
    Tester Connection
    		Condition
    		Specified Condition
    1S-11 - EDU NO. 1 relay (1)
    		Always
    		Below 1 Ω
    C74-8 (+B) - EDU NO. 1 relay (5)
    		Always
    		Below 1 Ω
    1S-11 or EDU NO. 1 relay (1) - Body ground
    		Always
    		10 kΩ or higher
    C74-8 (+B) or EDU NO. 1 relay (5) - Body ground
    		Always
    		10 kΩ or higher

    for No. 2
    Tester Connection
    		Condition
    		Specified Condition
    1P-12 - EDU NO. 2 relay (1)
    		Always
    		Below 1 Ω
    C76-8 (+B) - EDU NO. 2 relay (5)
    		Always
    		Below 1 Ω
    1P-12 - EDU NO. 2 relay (1) - Body ground
    		Always
    		10 kΩ or higher
    C76-8 (+B) or EDU NO. 2 relay (5) - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


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

  1. Remove the integration relay from the engine room relay block and junction block assembly.

  1. Disconnect the ECM connector.

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

    Standard Resistance (No. 1):

    for LHD
    Tester Connection
    		Condition
    		Specified Condition
    A38-45 (IREL) - EDU NO. 1 relay (2)
    		Always
    		Below 1 Ω
    A38-45 (IREL) or EDU NO. 1 relay (2) - Body ground
    		Always
    		10 kΩ or higher

    for RHD
    Tester Connection
    		Condition
    		Specified Condition
    A52-45 (IREL) - EDU NO. 1 relay (2)
    		Always
    		Below 1 Ω
    A52-45 (IREL) or EDU NO. 1 relay (2) - Body ground
    		Always
    		10 kΩ or higher

    Standard Resistance (No. 2):

    for LHD
    Tester Connection
    		Condition
    		Specified Condition
    A38-46 (IRL2) - EDU NO. 2 relay (2)
    		Always
    		Below 1 Ω
    A38-46 (IRL2) or EDU NO. 2 relay (2) - Body ground
    		Always
    		10 kΩ or higher

    for RHD
    Tester Connection
    		Condition
    		Specified Condition
    A52-46 (IRL2) - EDU NO. 2 relay (2)
    		Always
    		Below 1 Ω
    A52-46 (IRL2) or EDU NO. 2 relay (2) - 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)