Toyota Tundra (2015 year). Manual — part 2048
A
OK:
No blockages in the canister.
OK
GO TO STEP 49
NG
GO TO STEP 50
31.
CHECK TERMINAL VOLTAGE (CANISTER PUMP MODULE)
(a) Turn the ignition switch off.
(b) Disconnect the R12 canister pump module connector.
(c) Turn the ignition switch to ON.
(d) Measure the voltage according to the value(s) in the table below.
Result
TESTER
CONNECTION
CONDITION
SPECIFIED
CONDITION
SUSPECTED TROUBLE AREA
PROCEED
TO
R12-3 (MTRB) -
Body ground
Leak detection pump is
turned ON and OFF using the
Techstream
Leak detection pump is
turned ON and OFF using the
Techstream
Leak detection pump is
turned ON and OFF using the
Techstream
9 to 14 V
Wire harness between
leak detection pump and
body ground
Leak detection pump
A
Below 3 V
Wire harness between
leak detection pump and
ECM
ECM
B
B
GO TO STEP 33
3UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: EVAP System;...
32.
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*1
B*2
Always
10 kΩ or higher
Wire harness between canister pump
module and body ground
C
*1: for 100 L (26.4 US gal) Fuel Tank
*2: for 144 L (38 US gal) Fuel Tank
A
GO TO STEP 38
B
GO TO STEP 39
C
GO TO STEP 41
33.
CHECK HARNESS AND CONNECTOR (CANISTER PUMP MODULE - ECM)
(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
CONDITION
SUSPECTED TROUBLE AREA
PROCEED
TO
A24-49 (MPMP) - R12-3
(MTRB)
Always
Below 1 Ω
ECM
A
Always
10 kΩ or higher
Wire harness between ECM and canister
pump module
B
A
GO TO STEP 49
B
GO TO STEP 41
34.
INSPECT INTAKE MANIFOLD (EVAP PURGE PORT)
3UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: EVAP System;...
(a) Stop the engine.
(b) Disconnect the purge line from the intake manifold.
(c) Start the engine.
TEST RESULT
SUSPECTED TROUBLE AREA
PROCEED TO
Suction applied
Purge line between intake manifold and purge VSV
A
No suction
Intake manifold
B
(e) Reconnect the purge line.
A
GO TO STEP 42
B
GO TO STEP 43
35.
CORRECTLY REINSTALL OR REPLACE FUEL TANK CAP ASSEMBLY
HINT:
When reinstalling the fuel cap, tighten it firmly (only one click sound could be heard).
When replacing the fuel cap, use a fuel cap that meets OEM specifications, and install it firmly.
NEXT
GO TO STEP 51
36.
REPLACE FUEL TANK CAP
HINT:
When replacing the fuel cap, use a fuel cap that meets OEM specifications, and tighten it until a few click
sounds are heard.
NEXT
GO TO STEP 51
37.
LOCATE EVAP LEAK PART
3UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: EVAP System;...
(a) Disconnect the vent hose.
(b) Connect an EVAP tester to the canister pump module with the adapter.
(c) Pressurize the EVAP system to 3.2 to 3.7 kPa (24 to 28 mmHg).
(f) Repair or replace the leak point.
HINT:
Disconnect the hose between the canister and the fuel tank from the canister. Block the canister side and
GO TO STEP 51
38.
REPLACE CANISTER PUMP MODULE
(a) Replace the canister pump module
.
NOTICE:
When replacing canister pump module, check the canister pump module interior, canister interior and related
pipes for water, fuel and other liquids. If liquids are present, check for disconnections and/or cracks in the
following: 1) the pipe from the air inlet port to the canister pump module; 2) the canister filter; and 3) the fuel
tank vent hose. If liquids are present in canister interior, replace canister and canister pump module together
(replace canister assembly).
Check for filter blockage in the canister assembly. If the charcoal filter inside the canister assembly is clogged,
replace canister and canister pump module together (replace canister assembly).
Check for filter blockage in the canister filter. If the canister filter has blockages, replace the canister filter.
3UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: EVAP System;...
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