Toyota Tundra (2015 year). Manual — part 1940
A
TESTER CONNECTION
CONDITION
SPECIFIED CONDITION
R12-8 (SGND) - Body ground
Always
100 Ω or less
(c) Turn the ignition switch to ON.
(d) Measure the voltage according to the value(s) in the table below.
Standard voltage:
TESTER CONNECTION
SWITCH CONDITION
SPECIFIED CONDITION
R12-6 (VCC) - Body ground
Ignition switch ON
4.5 to 5.5 V
R12-7 (VOUT) - Body ground
Ignition switch ON
4.5 to 5.5 V
Result
TEST RESULT
SUSPECTED TROUBLE AREA
PROCEED
TO
Voltage and resistance within standard
ranges
Open in canister pressure sensor circuit
A*1
B*2
Voltage and resistance outside
standard ranges
Open in wire harness/connector (ECM - Canister
pressure sensor)
C
HINT:
*1: for 100 L (26.4 US gal) Fuel Tank
*2: for 144 L (38 US gal) Fuel Tank
B
GO TO STEP 6
C
GO TO STEP 8
5.
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: P0451-P0453;...
NEXT
GO TO STEP 9
6.
REPLACE CHARCOAL CANISTER ASSEMBLY
(a) Replace the canister assembly
.
NOTICE:
When replacing the 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.
NEXT
GO TO STEP 9
7.
REPAIR OR REPLACE HARNESS OR CONNECTOR
HINT:
If the exhaust tailpipe has been removed, go to the next step before reinstalling it.
NEXT
GO TO STEP 9
8.
REPLACE ECM
(a) Replace the ECM
.
3UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0451-P0453;...
NEXT
9.
CHECK WHETHER DTC OUTPUT RECURS (AFTER REPAIR)
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON and turn the Techstream on.
(c) Wait for at least 60 seconds.
(d) Enter the following menus: Powertrain / Engine and ECT / Trouble Codes / Pending.
HINT:
If no pending DTCs are displayed on the Techstream, the repair has been successfully completed.
NEXT
COMPLETED
3UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0451-P0453;...
Last Modified: 9-16-2014
6.6 C
Doc ID: RM000000SWH0CHX
Model Year: 2015
Model: Tundra
Prod Date Range: [08/2014 - ]
Title: 3UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0455,P0456; Evaporative Emission Control System
Leak Detected (Gross Leak); 2015 MY Tundra [08/2014 - ]
DTC
P0455
Evaporative Emission Control System Leak Detected (Gross Leak)
DTC
P0456
Evaporative Emission Control System Leak Detected (Very Small Leak)
DTC SUMMARY
DTC
CODE
MONITORING
ITEM
MALFUNCTION DETECTION
CONDITION
TROUBLE AREA
DETECTION
TIMING
DETECTION
LOGIC
P0455
EVAP gross
leak
Leak detection pump creates
negative pressure (vacuum) in
EVAP system and EVAP system
pressure measured. Reference
pressure measured at start and
[second reference pressure x
0.2], ECM determines that EVAP
system has large leak.
Fuel tank
cap (loose)
Leakage
from EVAP
line
(Canister -
Fuel tank)
Leakage
from EVAP
line
(Purge
VSV -
Canister)
Canister
pump
module
Leakage
from fuel
tank
Leakage
from
canister
While
ignition
switch off
2 trip
P0456
EVAP small
leak
Leak detection pump creates
negative pressure (vacuum) in
EVAP system and EVAP system
pressure measured. Reference
pressure measured at start and
second reference pressure, ECM
determines that EVAP system has
small leak.
Fuel tank
cap (loose)
Leakage
from EVAP
line
(Canister -
Fuel tank)
Leakage
from EVAP
line
(Purge
VSV -
Canister)
While
ignition
switch off
2 trip
3UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0455,P0456;...
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