Sfi System Starter Signal Circuit

Engine Hybrid System. Land Cruiser. Urj200, 202 Grj200 Vdj200
1Gr-Fe Engine Control. Land Cruiser. Urj200, 202 Grj200 Vdj200

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

READ VALUE USING GTS (STARTER SIGNAL)

INSPECT STARTER RELAY (ST)

CHECK HARNESS AND CONNECTOR (ST RELAY - CLUTCH START SWITCH)

CHECK HARNESS AND CONNECTOR (POWER SOURCE)

INSPECT STARTER

INSPECT CLUTCH START SWITCH ASSEMBLY

CHECK HARNESS AND CONNECTOR (CLUTCH START SWITCH - ECM)

CHECK IF VEHICLE IS EQUIPPED WITH ENTRY AND START SYSTEM

REPLACE ECM

CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED

INSPECT IGNITION SWITCH ASSEMBLY

CHECK HARNESS AND CONNECTOR (CLUTCH START SWITCH - IGNITION SWITCH)

SFI SYSTEM - Starter Signal Circuit


DESCRIPTION

While the engine is being cranked, current flows from terminal ST1 of the ignition switch to clutch start switch and also flows to terminal STA of the ECM (STA Signal).

WIRING DIAGRAM

Refer to DTC P0617 (Click here).

INSPECTION PROCEDURE

1.READ VALUE USING GTS (STARTER SIGNAL)

  1. Connect the GTS to the DLC3.

  1. Turn the ignition switch to ON.

  1. Turn the GTS on.

  1. Enter the following menus: Powertrain / Engine and ECT / Data List / Starter Signal.

  1. Read values.

  1. Check the result when the ignition switch is turned to ON and when the engine is started.

    OK:
    Condition
    		Display (Starter Signal)
    Ignition switch ON
    		OFF
    Engine is started
    		ON


NG
Go to step 6
OK


2.INSPECT STARTER RELAY (ST)

  1. Inspect the starter relay (ST) (Click here).



NG
REPLACE STARTER RELAY (ST)
OK


3.CHECK HARNESS AND CONNECTOR (ST RELAY - CLUTCH START SWITCH)

Land Cruiser. Urj200, 202 Grj200 Vdj200.1Gr-Fe Engine Control.Sfi System.Sfi System Starter Signal Circuit

  1. Disconnect the clutch start switch.

  1. Remove the ST 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
    ST relay (2) - A49-2
    		Always
    		Below 1 Ω
    ST relay (2) or A49-2 - Body ground
    		Always
    		10 kΩ or higher
    ST relay (1)* - A49-2
    		Always
    		Below 1 Ω
    ST relay (1)* or A49-2 - Body ground
    		Always
    		10 kΩ or higher
    for RHD
    Tester Connection
    		Condition
    		Specified Condition
    ST relay (2) - e1-2
    		Always
    		Below 1 Ω
    ST relay (2) or e1-2 - Body ground
    		Always
    		10 kΩ or higher
    *: GRJ200L-GNANKC


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


4.CHECK HARNESS AND CONNECTOR (POWER SOURCE)
Land Cruiser. Urj200, 202 Grj200 Vdj200.1Gr-Fe Engine Control.Sfi System.Sfi System Starter Signal Circuit

  1. Remove the ST 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
    ST relay (1) - ST relay (5)
    		Always
    		11 to 14 V
    ST relay (2)* - ST relay (5)
    		Always
    		11 to 14 V
    *: GRJ200L-GNANKC


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR (STARTER RELAY (ST) - BATTERY, BODY GROUND)
OK


5.INSPECT STARTER

  1. Inspect the starter (Click here).



NG
REPLACE STARTER (Click here)
OK

REPAIR OR REPLACE HARNESS OR CONNECTOR (STARTER - STARTER RELAY (ST), BATTERY)

6.INSPECT CLUTCH START SWITCH ASSEMBLY

  1. Inspect the clutch start switch (for LHD) (Click here).

  1. Inspect the clutch start switch (for RHD) (Click here).

    Result
    Result
    		Proceed to
    OK
    		A
    NG (for LHD)
    		B
    NG (for RHD)
    		C


B
REPLACE CLUTCH START SWITCH ASSEMBLY (Click here)

C
REPLACE CLUTCH START SWITCH ASSEMBLY (Click here)
A


7.CHECK HARNESS AND CONNECTOR (CLUTCH START SWITCH - ECM)
Land Cruiser. Urj200, 202 Grj200 Vdj200.1Gr-Fe Engine Control.Sfi System.Sfi System Starter Signal Circuit

  1. Disconnect the clutch start switch connector.

  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
    A49-2 - A38-46 (STA)
    		Always
    		Below 1 Ω
    A49-2 or A38-46 (STA) - Body ground
    		Always
    		10 kΩ or higher
    for RHD
    Tester Connection
    		Condition
    		Specified Condition
    e1-2 - A52-46 (STA)
    		Always
    		Below 1 Ω
    e1-2 or A52-46 (STA) - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


8.CHECK IF VEHICLE IS EQUIPPED WITH ENTRY AND START SYSTEM

Result
Result
Proceed to
w/ Entry and Start System
A
w/o Entry and Start System
B


B
Go to step 11
A


9.REPLACE ECM

  1. Replace the ECM (Click here).


NEXT


10.CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED

  1. Check the starter operation.

    OK:
    Malfunction has been repaired successfully.


NG
GO TO ENTRY AND START SYSTEM (ENGINE DOES NOT START) (Click here)
OK

END

11.INSPECT IGNITION SWITCH ASSEMBLY

  1. Inspect the ignition switch assembly (Click here).



NG
REPLACE IGNITION SWITCH ASSEMBLY (Click here)
OK


12.CHECK HARNESS AND CONNECTOR (CLUTCH START SWITCH - IGNITION SWITCH)
Land Cruiser. Urj200, 202 Grj200 Vdj200.1Gr-Fe Engine Control.Sfi System.Sfi System Starter Signal Circuit

  1. Disconnect the clutch start switch connector.

  1. Disconnect the ignition switch connector.

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

    Standard Resistance:
    for LHD
    Tester Connection
    		Condition
    		Specified Condition
    A49-1 - E93-3 (ST1)
    		Always
    		Below 1 Ω
    A49-1 or E93-3 (ST1) - Body ground
    		Always
    		10 kΩ or higher
    for RHD
    Tester Connection
    		Condition
    		Specified Condition
    e1-1 - E93-3 (ST1)
    		Always
    		Below 1 Ω
    e1-1 or E93-3 (ST1) - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

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