Toyota Tundra (2015 year). Manual — part 1297

A

B

GO TO STEP 33

6.

PERFORM EVAPORATIVE SYSTEM CHECK (STEP 2/6)

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

DTC*

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

EVAP pressure in step (b) -1.057

kPa-g (-7.93 mmHg-g) or higher

Reference orifice high-flow

Leak detection pump stuck OFF

B

1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: EVAP System;...

A

DTC*

TEST RESULT

SUSPECTED TROUBLE AREA

PROCEED

TO

P2401

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) higher than

-1 kPa-g (-7.5 mmHg-g)

Vent valve stuck closed

Leak detection pump performance

deteriorates

Leak detection pump circuit

malfunctioning (large resistance

exists in the circuit)

D

*: These DTCs are already stored in the ECM when the vehicle arrives and are confirmed in the Confirm

DTC procedures above.

B

GO TO STEP 11

C

GO TO STEP 38

D

GO TO STEP 13

7.

PERFORM EVAPORATIVE SYSTEM CHECK (STEP 2/6 TO 3/6)

1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: EVAP System;...

(a) Check the EVAP pressure increase in step 3/6.

Result

DTC*

TEST RESULT

SUSPECTED TROUBLE AREA

PROCEED

TO

-

EVAP pressure increases by 0.3 kPa-g (2.25

mmHg-g) or more within 10 seconds of

proceeding from step 2/6 to step 3/6

Not yet determined

A

P2420

No variation in EVAP pressure despite

proceeding from step 2/6 to step 3/6

Vent valve stuck open (vent)

Canister (charcoal filter inside

canister) clogged

B

P0451

No variation in EVAP pressure during steps 1/6

through 3/6

Canister pressure sensor output

value stuck

Vent valve broken (valve split in

two)

Leak detection pump performance

deteriorates

Leak detection pump circuit

malfunctioning (large resistance

exists in the circuit)

C

*: These DTCs are already stored in the ECM when the vehicle arrives and are confirmed in the Confirm DTC

procedures above.

1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: EVAP System;...

A

NEXT

B

GO TO STEP 27

C

GO TO STEP 15

8.

PERFORM EVAPORATIVE SYSTEM CHECK (STEP 3/6)

(a) Wait until the EVAP pressure change over 30 seconds is less than 0.1 kPa-g (0.75 mmHg-g).

(b) Measure the EVAP pressure and record it.

HINT:

A few minutes are required for the EVAP pressure to become stable. When there is little fuel in the fuel tank,

it may take up to 15 minutes.

9.

PERFORM EVAPORATIVE SYSTEM CHECK (STEP 4/6)

1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: EVAP System;...