Toyota Tundra (2015 year). Manual — part 2044
*1: for 100 L (26.4 US gal) Fuel Tank
*2: for 144 L (38 US gal) Fuel Tank
HINT:
*: The leak detection pump begins to operate as step 1/6 finishes and step 2/6 starts.
(b) Check the EVAP pressure again when it has stabilized. This pressure is the reference pressure.
Result
DTCS*1
TEST RESULT
SUSPECTED TROUBLE AREA
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*2
D*3
P2419
EVAP pressure in step (a) more than -1.057 kPa-g
(-7.93 mmHg-g)
Vent valve stuck closed
E
*1: These DTCs are already present in the ECM when the vehicle arrives and are confirmed in the
"CONFIRM DTC" procedures above.
*2: for 100 L (26.4 US gal) Fuel Tank
*3: for 144 L (38 US gal) Fuel Tank
3UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: EVAP System;...
A
B
GO TO STEP 11
C
GO TO STEP 38
D
GO TO STEP 39
E
GO TO STEP 13
7.
PERFORM EVAP SYSTEM CHECK (STEP 2/6 TO 3/6)
*1: for 100 L (26.4 US gal) Fuel Tank
*2: for 144 L (38 US gal) Fuel Tank
(a) Check the EVAP pressure increase in step 3/6.
Result
DTCS*
TEST RESULT
SUSPECTED TROUBLE
AREA
PROCEED
TO
-
EVAP pressure increases by 0.3 kPa-g (2.25 mmHg-g) or more
A
P2420
No variation in EVAP pressure despite proceeding from step 2/6
to step 3/6
Vent valve stuck open
(vent)
B
3UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: EVAP System;...
A
DTCS*
TEST RESULT
SUSPECTED TROUBLE
AREA
PROCEED
TO
P0451 No variation in EVAP pressure during steps 1/6 through 3/6
Canister pressure sensor
output value stuck
C
*: These DTCs are already present in the ECM when the vehicle arrives and are confirmed in the "CONFIRM DTC"
procedures above.
B
GO TO STEP 27
C
GO TO STEP 15
8.
PERFORM EVAP SYSTEM CHECK (STEP 3/6)
*1: for 100 L (26.4 US gal) Fuel Tank
*2: for 144 L (38 US gal) Fuel Tank
(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.
3UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: EVAP System;...
NEXT
9.
PERFORM EVAP SYSTEM CHECK (STEP 4/6)
(a) Check the EVAP pressure in step 4/6.
Result
DTCS*1
TEST RESULT
SUSPECTED TROUBLE AREA
PROCEED
TO
-
EVAP pressure increases by 0.3 kPa-g (2.25 mmHg-g) or
Not yet determined
A
P0441*2
EVAP pressure increases by 0.3 kPa-g (2.25 mmHg-g) or
Problems in purge line between
purge VSV and intake manifold
B
P0441
Variation in EVAP pressure less than 0.3 kPa-g (2.25
mmHg-g) for 10 seconds, after proceeding from step 3/6
to step 4/6
Purge VSV stuck closed
C
*1: These DTCs are already present in the ECM when the vehicle arrives and are confirmed in the
"CONFIRM DTC" procedures above.
*2: This result suggests that due to purge line blockage or purge VSV malfunction, the DTC was stored by
the purge flow monitor while the engine was running, or that key-off monitor test result were nearly
borderline values.
B
GO TO STEP 22
3UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: EVAP System;...
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