Toyota FJ Cruiser (GSJ 10, 15 series). Instruction - part 103

1GR-FE ENGINE CONTROL SYSTEM  –  SFI SYSTEM

ES–367

ES

(a) Check the EVAP pressure in steps 1/5 and 2/5.

Result

*

: These DTCs are already present in the ECM when the 

vehicle arrives and are confirmed in step 1.
HINT:
The first reference pressure is the value determined in 
step 2/5.

B

A

5

PERFORM EVAP SYSTEM CHECK (STEP 1/5 TO 2/5)

Purge VSV

Vent Valve

Leak Detection 
Pump

EVAP Pressure

Positive

Negative

First Reference 
Pressure

Steps

Time

(Reference)

10 seconds

1/5

2/5

Leak Detection Pump Stuck ON

ON

ON

ON

ON: Open

OFF: Closed
ON: Closed

OFF: Vent

60 
seconds

A106737E05

DTCs

*

Test Results

Suspected Trouble Areas

Proceed To

-

Virtually no variation in EVAP pressure during step 1/5. Then 
decreases to reference pressure

Not yet determined

A

P2402

Small difference between EVAP pressures during steps 1/5 and 2/5

Leak detection pump stuck ON

B

              Go to step 23

ES–368

1GR-FE ENGINE CONTROL SYSTEM  –  SFI SYSTEM

ES

HINT:
Make a note of the pressures checked in steps (a) and (b) 
below.
(a) Check the EVAP pressure 4 seconds after the leak 

detection pump is activated

*

.

*

: The leak detection pump begins to operate as step 1/5 

finishes and step 2/5 starts.
(b) Check the EVAP pressure again when it has stabilized. 
This pressure is the reference pressure.

Result

*: These DTCs are already present in the ECM when the 
vehicle arrives and are confirmed in step 1.

6

PERFORM EVAP SYSTEM CHECK (STEP 2/5)

Purge VSV

Vent Valve

Leak Detection 
Pump

EVAP Pressure

Positive

Negative

First Reference 
Pressure 
Standard

4 seconds

2/5

3/5

Within 15 minutes

60 
seconds

Steps

Time

(Reference)

OK

Vent Valve Stuck Closed

Leak Detection Pump Stuck OFF 
Reference Orifice High-flow

ON

ON

ON

ON: Open

OFF: Closed

OFF: Vent

ON: Closed

Reference Orifice Clogged

A106738E05

DTCs

*

Test Results

Suspected Trouble Areas

Proceed To

-

EVAP pressure in step (b) between -
4.85 kPa-g and -1.057 kPa-g (-36.4 
mmHg-g and -7.93 mmHg-g)

Not yet determined

A

P043F and P2401

EVAP pressure in step (b) -1.057 kPa-
g (-7.93 mmHg-g) or more

•

Reference orifice high-flow

•

Leak detection pump stuck OFF

B

P043E

EVAP pressure in step (b) below -4.85 
kPa-g (-36.4 mmHg-g)

Reference orifice clogged

C

P2419

EVAP pressure in step (a) more than -
1.057 kPa-g (-7.93 mmHg-g)

Vent valve stuck closed

D

1GR-FE ENGINE CONTROL SYSTEM  –  SFI SYSTEM

ES–369

ES

B

C

D

A

(a) Check the EVAP pressure increase in step 3/5.

Result

*

: These DTCs are already present in the ECM when the 

vehicle arrives and are confirmed in step 1.

B

              Go to step 11

              Go to step 30

              Go to step 19

7

PERFORM EVAP SYSTEM CHECK (STEP 2/5 TO 3/5)

Purge VSV

Vent Valve

Leak Detection 
Pump

EVAP Pressure

Positive

Negative

First Reference 
Pressure

Steps

Time

(Reference)

ON

ON

ON

ON: Open

ON: Closed

OFF: Closed

OFF: Vent

Vent Valve Stuck 
Open (vent)

3/5

2/5

Within 15 minutes

A106739E05

DTCs

*

Test Results

Suspected Trouble Areas

Proceed To

-

EVAP pressure increases by 0.3 kPa-g (2.25 mmHg-
g) or more within 10 seconds of proceeding from 
step 2/5 to step 3/5

Not yet determined

A

P2420

No variation in EVAP pressure despite proceeding 
from step 2/5 to step 3/5

Vent valve stuck open (vent)

B

P0451

No variation in EVAP pressure during steps 1/5 
through 3/5

Canister pressure sensor malfunction 
fixed

C

              Go to step 20

ES–370

1GR-FE ENGINE CONTROL SYSTEM  –  SFI SYSTEM

ES

C

A

(a) Wait until the EVAP pressure change is less than 0.1 

kPa-g (0.75 mmHg-g) for 30 seconds.

(b) Measure the EVAP pressure and record it.

HINT:
A few minutes are required for the EVAP pressure to 
become saturated. When there is little fuel in the fuel 
tank, it takes up to 15 minutes.

NEXT

              Go to step 30

8

PERFORM EVAP SYSTEM CHECK (STEP 3/5)

Purge VSV

Vent Valve

Leak Detection 
Pump

EVAP Pressure

Positive

Negative

First Reference 
Pressure

Steps

Time

(Reference)

ON

ON

ON

ON: Open

OFF: Closed
ON: Closed

OFF: Vent

3/5

Within 15 minutes

A106740E05