Toyota Tundra (2015 year). Manual — part 2045

A

C

GO TO STEP 17

10.

PERFORM EVAP SYSTEM CHECK (STEP 5/6)

(a) Check the EVAP pressure in step 5/6.

(b) Compare the EVAP pressure in step 3/6 and the second reference pressure (step 5/6).

Result

DTCS*

TEST RESULT

SUSPECTED TROUBLE AREA

PROCEED

TO

-

EVAP pressure (step 3/6) lower than second

reference pressure (step 5/6)

Not yet determined (no leakage

from EVAP system)

A

P0441 and

P0455

EVAP pressure (step 3/6) higher than [second

reference pressure (step 5/6) x 0.2]

Purge VSV stuck open

EVAP gross leak

B

P0456

EVAP pressure (step 3/6) higher than second

reference pressure (step 5/6)

EVAP small leak

B

*: These DTCs are already present in the ECM when the vehicle arrives and are confirmed in the "CONFIRM DTC"

procedures above.

A

GO TO STEP 44

3UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: EVAP System;...

B

GO TO STEP 17

11.

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) Check the EVAP pressure in step 3/6.

Result

DTCS*1

TEST RESULT

SUSPECTED TROUBLE AREA

PROCEED

TO

P043F

EVAP pressure less than [reference pressure] measured at

2/6

Reference orifice high-flow

A*2

B*3

P2401

EVAP pressure almost same as [reference pressure]

measured at 2/6

Leak detection pump stuck

OFF

C

*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

HINT:

The first reference pressure is the value determined in step 2/6.

A

GO TO STEP 38

3UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: EVAP System;...

A

B

GO TO STEP 39

C

GO TO STEP 31

12.

INSPECT CANISTER PUMP MODULE (CANISTER PRESSURE SENSOR CIRCUIT)

(a) Check the canister pressure sensor circuit, referring to DTC P0451 canister pressure sensor circuit

inspection procedure

.

NEXT

GO TO STEP 51

13.

INSPECT CANISTER PUMP MODULE (VENT VALVE OPERATION)

(a) Turn the ignition switch off.

(b) Disconnect the R12 canister pump module connector.

(c) Apply the battery voltage to 5 (VLVB) and 1 (VGND) terminals of

the canister pump module.

(d) Touch the canister pump module to confirm the vent valve

operation.

Result

TEST RESULT

SUSPECTED TROUBLE AREA

PROCEED TO

Operating

1. Wire harness between vent valve and ECM

2. ECM

A

Not operating

Vent valve

B*1

C*2

*1: for 100 L (26.4 US gal) Fuel Tank

*2: for 144 L (38 US gal) Fuel Tank

B

GO TO STEP 38

C

GO TO STEP 39

14.

CHECK HARNESS AND CONNECTOR (ECM - CANISTER PUMP MODULE)

(a) Disconnect the A24 ECM connector.

(b) Disconnect the R12 canister pump module connector.

3UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: EVAP System;...

A

A

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

Result

TESTER CONNECTION

CONDITION

SPECIFIED

CONDITION

SUSPECTED TROUBLE AREA

PROCEED

TO

A24-30 (VPMP) - R12-1

(VGND)

Always

Below 1 Ω

ECM

A

Always

10 kΩ or higher

Wire harness between ECM and canister

pump module

B

B

GO TO STEP 41

15.

CHECK HARNESS AND CONNECTOR (CANISTER PUMP MODULE - BODY GROUND)

(a) Turn the ignition switch off.

(b) Disconnect the R12 canister pump module connector.

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

Result

TESTER CONNECTION

CONDITION

SPECIFIED

CONDITION

SUSPECTED TROUBLE AREA

PROCEED

TO

R12-4 (MGND) - Body

ground

Always

Below 1 Ω

Leak detection pump

A

Always

10 kΩ or higher

Wire harness between canister pump

module and body ground

B

B

GO TO STEP 41

16.

CHECK HARNESS AND CONNECTOR (ECM - CANISTER PUMP MODULE)

(a) Turn the ignition switch off.

(b) Disconnect the R12 canister pump module connector.

(c) Disconnect the A24 ECM connector.

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

Result

TESTER CONNECTION

CONDITION

SPECIFIED

SUSPECTED TROUBLE AREA

PROCEED

3UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: EVAP System;...