Toyota Tundra (2015 year). Manual — part 1680
(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)
(a) Stop the engine.
(b) Disconnect the purge line from the intake manifold.
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: EVAP System...
(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 tank cap, tighten it firmly (only one click sound could be heard).
When replacing the fuel tank cap, use a fuel tank cap that meets OEM specifications, and tighten it firmly.
NEXT
GO TO STEP 51
36.
REPLACE FUEL TANK CAP ASSEMBLY
HINT:
When replacing the fuel tank tank cap assembly, use a fuel tank 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-FBE 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 the canister pump module, check the canister pump module interior, charcoal canister
assembly 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 the canister interior, replace the
charcoal canister assembly and canister pump module together.
Check for filter blockage in the canister. If the canister filter inside the charcoal canister assembly is clogged,
replace the charcoal canister assembly and canister pump module together.
Check for filter blockage in the canister filter. If the canister filter has blockages, replace the fuel tank inlet
pipe sub-assembly.
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: EVAP System...
NEXT
GO TO STEP 51
39.
REPLACE CHARCOAL CANISTER ASSEMBLY
(a) Replace the charcoal canister assembly
.
NOTICE:
When replacing the charcoal canister assembly, check the canister pump module 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.
Check for filter blockage in the canister filter. If the canister filter has blockages, replace the fuel tank inlet
pipe sub-assembly.
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: EVAP System...
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