Sfi System - Starter Signal Circuit

Land Cruiser URJ200 URJ202 GRJ200 VDJ200 - 1GR-FE ENGINE CONTROL

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 ().


INSPECTION PROCEDURE

1.READ VALUE USING GTS (STARTER SIGNAL)

Connect the GTS to the DLC3.

Turn the ignition switch to ON.

Turn the GTS on.

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

Read values.

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

  • OK:
  • ConditionDisplay (Starter Signal)
    Ignition switch ONOFF
    Engine is startedON
NG
Go to step 6
OK
2.INSPECT STARTER RELAY (ST)

Inspect the starter relay (ST) ().

NG
REPLACE STARTER RELAY (ST)
OK
3.CHECK HARNESS AND CONNECTOR (ST RELAY - CLUTCH START SWITCH)

Sfi System - Starter Signal Circuit. 1GR-FE ENGINE CONTROL. Land Cruiser URJ200 URJ202 GRJ200 VDJ200

Disconnect the clutch start switch.

Remove the ST relay from the engine room relay block.

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

  • Standard Resistance:
  • for LHD
    Tester ConnectionConditionSpecified Condition
    ST relay (2) - A49-2AlwaysBelow 1 Ω
    ST relay (2) or A49-2 - Body groundAlways10 kΩ or higher
    ST relay (1)* - A49-2AlwaysBelow 1 Ω
    ST relay (1)* or A49-2 - Body groundAlways10 kΩ or higher
  • for RHD
    Tester ConnectionConditionSpecified Condition
    ST relay (2) - e1-2AlwaysBelow 1 Ω
    ST relay (2) or e1-2 - Body groundAlways10 kΩ or higher

*: GRJ200L-GNANKC


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
4.CHECK HARNESS AND CONNECTOR (POWER SOURCE)
Sfi System - Starter Signal Circuit. 1GR-FE ENGINE CONTROL. Land Cruiser URJ200 URJ202 GRJ200 VDJ200

Remove the ST relay from the engine room relay block.

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

  • Standard Voltage:
  • Tester ConnectionConditionSpecified Condition
    ST relay (1) - ST relay (5)Always11 to 14 V
    ST relay (2)* - ST relay (5)Always11 to 14 V

*: GRJ200L-GNANKC


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

Inspect the starter ().

NG
REPLACE STARTER ()
OK
REPAIR OR REPLACE HARNESS OR CONNECTOR (STARTER - STARTER RELAY (ST), BATTERY)
6.INSPECT CLUTCH START SWITCH ASSEMBLY

Inspect the clutch start switch (for LHD) ().

Inspect the clutch start switch (for RHD) ().

Result
ResultProceed to
OKA
NG (for LHD)B
NG (for RHD)C
B
REPLACE CLUTCH START SWITCH ASSEMBLY ()
C
REPLACE CLUTCH START SWITCH ASSEMBLY ()
A
7.CHECK HARNESS AND CONNECTOR (CLUTCH START SWITCH - ECM)
Sfi System - Starter Signal Circuit. 1GR-FE ENGINE CONTROL. Land Cruiser URJ200 URJ202 GRJ200 VDJ200

Disconnect the clutch start switch connector.

Disconnect the ECM connector.

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

  • Standard Resistance:
  • for LHD
    Tester ConnectionConditionSpecified Condition
    A49-2 - A38-46 (STA)AlwaysBelow 1 Ω
    A49-2 or A38-46 (STA) - Body groundAlways10 kΩ or higher
  • for RHD
    Tester ConnectionConditionSpecified Condition
    e1-2 - A52-46 (STA)AlwaysBelow 1 Ω
    e1-2 or A52-46 (STA) - Body groundAlways10 kΩ or higher
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
8.CHECK IF VEHICLE IS EQUIPPED WITH ENTRY AND START SYSTEM
Result
ResultProceed to
w/ Entry and Start SystemA
w/o Entry and Start SystemB
B
Go to step 11
A
9.REPLACE ECM

Replace the ECM ().

NEXT
10.CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED

Check the starter operation.

  • OK:
  • Malfunction has been repaired successfully.
NG
GO TO ENTRY AND START SYSTEM (ENGINE DOES NOT START) ()
OK
END
11.INSPECT IGNITION SWITCH ASSEMBLY

Inspect the ignition switch assembly ().

NG
REPLACE IGNITION SWITCH ASSEMBLY ()
OK
12.CHECK HARNESS AND CONNECTOR (CLUTCH START SWITCH - IGNITION SWITCH)
Sfi System - Starter Signal Circuit. 1GR-FE ENGINE CONTROL. Land Cruiser URJ200 URJ202 GRJ200 VDJ200

Disconnect the clutch start switch connector.

Disconnect the ignition switch connector.

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

  • Standard Resistance:
  • for LHD
    Tester ConnectionConditionSpecified Condition
    A49-1 - E93-3 (ST1)AlwaysBelow 1 Ω
    A49-1 or E93-3 (ST1) - Body groundAlways10 kΩ or higher
  • for RHD
    Tester ConnectionConditionSpecified Condition
    e1-1 - E93-3 (ST1)AlwaysBelow 1 Ω
    e1-1 or E93-3 (ST1) - Body groundAlways10 kΩ or higher
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
REPAIR OR REPLACE HARNESS OR CONNECTOR (IGNITION SWITCH - BATTERY)