Toyota Tundra (2015 year). Manual — part 1938
Last Modified: 9-16-2014
6.6 C
Doc ID: RM0000012MC0BSX
Model Year: 2015
Model: Tundra
Prod Date Range: [08/2014 - ]
Title: 3UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0451-P0453; Evaporative Emission Control System
Pressure Sensor Range / Performance; 2015 MY Tundra [08/2014 - ]
DTC
P0451
Evaporative Emission Control System Pressure Sensor Range / Performance
DTC
P0452
Evaporative Emission Control System Pressure Sensor / Switch Low Input
DTC
P0453
Evaporative Emission Control System Pressure Sensor / Switch High Input
DTC SUMMARY
DTC
CODE
MONITORING
ITEM
MALFUNCTION
DETECTION
CONDITION
TROUBLE AREA
DETECTION TIMING
DETECTION
LOGIC
P0451
Canister
pressure
sensor
abnormal
voltage
fluctuation
Sensor output
voltage
fluctuates
frequently within
a certain time
period.
Canister pump
module
Connector/wire
harness
(Canister pump
module - ECM)
EVAP system hose
(pipe from air inlet
port to canister
pump module,
canister filter, fuel
tank vent hose)
ECM
EVAP
monitoring
(ignition
switch off)
Engine
running
2 trip
Canister
pressure
sensor
constant
voltage
Sensor output
voltage does not
vary in a certain
time period.
EVAP
monitoring
(ignition
switch off)
P0452
Canister
pressure
sensor low
input
EVAP pressure
less than
42.11009 kPa
for 0.5 seconds.
Canister pump
module
Connector/wire
harness
(Canister pump
module - ECM)
EVAP system hose
(pipe from air inlet
port to canister
pump module,
canister filter, fuel
tank vent hose)
ECM
Ignition
switch ON
EVAP
monitoring
(ignition
switch off)
1 trip
P0453
Canister
pressure
sensor high
input
EVAP pressure
more than 123.8
kPa for 0.5
seconds.
Canister pump
module
Connector/wire
harness
Ignition
switch ON
EVAP
monitoring
1 trip
3UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0451-P0453;...
DTC
CODE
MONITORING
ITEM
MALFUNCTION
DETECTION
CONDITION
TROUBLE AREA
DETECTION TIMING
DETECTION
LOGIC
(Canister pump
module - ECM)
EVAP system hose
(pipe from air inlet
port to canister
pump module,
canister filter, fuel
tank vent hose)
ECM
(ignition
switch off)
HINT:
The canister pressure sensor is built into the canister pump module.
DESCRIPTION
The description can be found in the EVAP (Evaporative Emission) System
.
MONITOR DESCRIPTION
DTC P0451: Canister pressure sensor abnormal voltage fluctuation or being constant
If the canister pressure sensor voltage output fluctuates rapidly for 10 seconds, the ECM stops
the EVAP system monitor. The ECM interprets this as the canister pressure sensor voltage
fluctuating, and stops the EVAP system monitor. The ECM then illuminates the MIL and stores
the DTC. Alternatively, if the sensor voltage output does not change for 10 seconds, the ECM
interprets this as the sensor being stuck, and stops the monitor. The ECM then illuminates
the MIL and stores the DTC. (Both the malfunctions are detected by 2 trip detection logic.)
1.
DTC P0452: Canister pressure sensor voltage low
2.
3UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0451-P0453;...
If the canister pressure sensor output [pressure] is below 42.11009 kPa-a (315.9 mmHg-a),
the ECM interprets this as an open or short circuit malfunction in the canister pressure sensor
or its circuit, and stops the EVAP system monitor. The ECM then illuminates the MIL and sets
the DTC (1 trip detection logic).
DTC P0453: Canister pressure sensor voltage high
If the canister pressure sensor output [pressure] is 123.8 kPa-a (928.4 mmHg-a) or more,
the ECM interprets this as an open or short circuit malfunction in the canister pressure sensor
or its circuit, and stops the EVAP system monitor. The ECM then illuminates the MIL and sets
the DTC (1 trip detection logic).
3.
MONITOR STRATEGY
Required Sensors/Components
Canister pump module
Duration
0.5 seconds: P0452 and P0453
Within 2 minutes: P0451 (sensor stuck)
Less than 15 seconds: P0451 (sensor noise)
MIL Operation
Immediate: P0452 and P0453
2 driving cycles: P0451
TYPICAL ENABLING CONDITIONS
P0451 (Noise monitor):
Monitor runs whenever following DTCs not present
None
Atmospheric pressure (absolute pressure)
70 to 110 kPa-a (525 to 825 mmHg-a)
Battery voltage
10.5 V or more
Intake air temperature
4.4 to 40°C (40 to 104°F)
Canister pressure sensor malfunction (P0452, P0453)
Not detected
A. Engine condition
Running
B. Time after key off
5 or 7 or 9.5 hours
P0451 (Stuck monitor):
Battery voltage
10.5 V or more
Intake air temperature
4.4 to 40°C (40 to 104°F)
Canister pressure sensor malfunction (P0452, P0453)
Not detected
Atmospheric pressure (absolute pressure)
70 to 110 kPa-a (525 to 825 mmHg-a)
Time after key off
5 or 7 or 9.5 hours
P0452 and P0453:
Monitor runs whenever following DTCs not present
None
Battery voltage
8 V or more
Starter
OFF
3UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0451-P0453;...
(a) Ignition switch
ON
(b) Soak timer
ON
TYPICAL MALFUNCTION THRESHOLDS
P0451: Canister pressure sensor noise
Frequency that EVAP pressure change 0.3 kPa-g (2.25 mmHg-g) or more
10 times or more in 10 seconds
P0451: Canister pressure sensor stuck
EVAP pressure change during reference pressure measurement
Less than 0.65 kPa (4.876 mmHg)
P0452: Canister pressure sensor low voltage
EVAP pressure
Less than 42.11009 kPa-a (315.8679 mmHg-a)
P0453: Canister pressure sensor high voltage
EVAP pressure
More than 123.76147 kPa-a (928.33489 mmHg-a)
CONFIRMATION DRIVING PATTERN
NOTICE:
1.
Turn the ignition switch to ON and turn the Techstream on.
2.
3UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0451-P0453;...
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