1Gr-Fe Engine Control. Sfi System Starter Signal Circuit

While the engine is being cranked, current flows from terminal ST2 of the ignition switch assembly*1 or terminal STAR of the certification ECU (smart key ECU assembly)*2 to the park/neutral position switch*3 or clutch start switch*4 and to terminal STA of the ECM (STA signal).

*1: w/o Entry and Start System
*2: w/ Entry and Start System
*3: for A/T
*4: for M/T

WIRING DIAGRAM

Refer to DTC P0617 (Click here).

INSPECTION PROCEDURE

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

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

Go to step 11

A

2.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:
Condition
Display (Starter Signal)
Ignition switch ON
OFF
Engine is started
ON

Go to step 7

OK

3.INSPECT STARTER RELAY (ST)

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

REPLACE STARTER RELAY (ST)

OK

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

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 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
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

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

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

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

5.CHECK HARNESS AND CONNECTOR (POWER SOURCE)

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

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 Connection
Condition
Specified Condition
ST relay (1) - ST relay (5)
Always
11 to 14 V
Text in Illustration
*1
Engine Room Relay Block Assembly
*2
ST Relay

Text in Illustration
*1	Engine Room Relay Block Assembly
*2	ST Relay

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

OK

6.INSPECT STARTER

Inspect the starter (Click here).

REPLACE STARTER (Click here)

REPAIR OR REPLACE HARNESS OR CONNECTOR

7.INSPECT CLUTCH START SWITCH ASSEMBLY

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

Inspect the clutch start switch (for RHD) (Click here).
Result
Result
Proceed to
OK
A
NG (for LHD)
B
NG (for RHD)
C

REPLACE CLUTCH START SWITCH ASSEMBLY (Click here)

A

8.CHECK HARNESS AND CONNECTOR (CLUTCH START SWITCH - ECM)

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 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

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

REPLACE IGNITION SWITCH ASSEMBLY (Click here)

OK

9.INSPECT IGNITION SWITCH ASSEMBLY

Inspect the ignition switch assembly (Click here).

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

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

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 Connection
Condition
Specified Condition
A49-1 - E93-7 (ST2)
Always
Below 1 Ω
A49-1 or E93-7 (ST2) - Body ground
Always
10 kΩ or higher
for RHD
Tester Connection
Condition
Specified Condition
e1-1 - E93-7 (ST2)
Always
Below 1 Ω
e1-1 or E93-7 (ST2) - Body ground
Always
10 kΩ or higher

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

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

11.INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY

Inspect the park/neutral position switch assembly (Click here).

REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY (Click here)

OK

12.CHECK HARNESS AND CONNECTOR (PARK/NEUTRAL POSITION SWITCH, CLUTCH START SWITCH - ECM)

Disconnect the park/neutral position switch connector.

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 A/T
Tester Connection
Condition
Specified Condition
C24-5 (L) - A38-46 (STA)
Always
Below 1 Ω
C24-5 (L) or A38-46 (STA) - Body ground
Always
10 kΩ or higher
for M/T
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

REPAIR OR REPLACE HARNESS OR CONNECTOR

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

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