Toyota Tundra. Manual — part 1492

Valve

High

concentration

Fuel
Pump/Speed
Status

Fuel pump/speed
status/ ON or OFF

-

Active Test support data

Vacuum Pump

Key-off EVAP
system pump status/
ON or OFF

-

Active Test support data

EVAP (Purge)
VSV

Purge VSV control
duty/ Min.: 0%,
Max.: 100%

0 to 100%: During
idling

Order signal from ECM

Evap Purge
Flow

Purge flow/ Min.:
0%, Max.: 102.3%

0 to 100%: Idling

-

Purge Density
Learn Value

Learning value of
purge density/ Min.:
-50, Max.: 350.000

Idling: -40 to 0%

Service data

Vapor Pressure
Pump

Vapor pressure/
Min.: 33.853 kPa,
Max.: 125.596 kPa

Approximately 100
kPa: Ignition switch
ON

EVAP system pressure monitored by
canister pressure sensor.

Vapor Pressure
(Calculated)

Calculated EVAP
system pressure/
Min.: -5.632 kPa,
Max.: 715.264 kPa

Approximately 100
kPa: Ignition switch
ON

-

EVAP System
Vent Valve

Key-off EVAP
system vent valve
status/ ON or OFF

-

Active Test support data

EVAP Purge
VSV

VSV status for
EVAP control/ ON
or OFF

-

Active Test support data

Target Air-Fuel
Ratio

Air fuel ratio: Min.:
0, Max.: 1.998

0.8 to 1.2: During
idling

-

AF Lambda B1
S1

Short-term fuel trim
associated with the
Bank 1 Sensor 1/
Min.: 0, Max.: 1.99



Value less
than 1 (0.000
to 0.999) =
Rich



Stoichiometric
air fuel ratio =
1



Value more
than 1 (1.001
to 1.999) =
Lean

-



Value less
than 1 (0.000
to 0.999) =
Rich

2009 Toyota Tundra

2009 ENGINE PERFORMANCE Engine Control System (3UR-FBE) - Tundra

AF Lambda B2
S1

Short-term fuel trim
associated with the
Bank 2 Sensor 1/
Min.: 0, Max.: 1.99



Stoichiometric
air fuel ratio =
1



Value more
than 1 (1.001
to 1.999) =
Lean

-

AFS Voltage
B1 S1

Air fuel ratio sensor
output voltage (for
Bank 1 Sensor 1)/
Min.: 0 V, Max.:
7.99 V

2.8 to 3.8 V: Idling

Performing the Control the Injection
Volume or Control the Injection
Volume for A/F Sensor function of the
Active Test enables the technician to
check voltage output of the sensor.

AFS Voltage
B2 S1

Air fuel ratio sensor
output voltage (for
Bank 2 Sensor 1)/
Min.: 0 V, Max.:
7.99 V

2.8 to 3.8 V: Idling

Performing the Control the Injection
Volume or Control the Injection
Volume for A/F Sensor function of the
Active Test enables the technician to
check voltage output of the sensor.

AFS Current
B1 S1

Air fuel ratio sensor
current Bank 1
Sensor 1/ Min.: -128
mA, Max.: 127.99
mA

-0.5 to 0.5 mA:
Idling

Performing Control the Injection
Volume or Control the Injection
Volume for A/F Sensor function of
Active Test enables technician to
check output current of sensor.

AFS Current
B2 S1

Air fuel ratio sensor
current (for Bank 2
Sensor 1)/ Min.: -
128 mA, Max.:
127.99 mA

-0.5 to 0.5 mA:
Idling

Performing Control the Injection
Volume or Control the Injection
Volume for A/F Sensor function of
Active Test enables technician to
check output current of sensor.

O2S B1 S2

Heated oxygen
sensor output
voltage (for Bank 1
Sensor 2)/ Min.: 0V,
Max.: 1.27 V

0.1 to 0.9 V: Driving
70 km/h (44 mph)

Performing the Control the Injection
Volume or Control the Injection
Volume for A/F Sensor function of the
Active Test enables the technician to
check voltage output of the sensor.

O2S B2 S2

Heated oxygen
sensor output
voltage (for Bank 2
Sensor 2)/ Min.: 0
V, Max.: 1.27 V

0.1 to 0.9 V: Driving
70 km/h (44 mph)

Performing the Control the Injection
Volume or Control the Injection
Volume for A/F Sensor function of the
Active Test enables the technician to
check voltage output of the sensor.

O2S Impedance
B1S2

Sub heated oxygen
sensor impedance
(Bank 1 Sensor 2)/
Min.: 0 ohms, Max.:
21247.67 ohms

5 to 15000 ohms

After driving approx. 10 min. in urban
area

O2S Impedance
B2S2

Sub heated oxygen
sensor impedance
(Bank 2 Sensor 2)/
Min.: 0 ohms, Max.:

5 to 15000 ohms

After driving approx. 10 min. in urban
area

2009 Toyota Tundra

2009 ENGINE PERFORMANCE Engine Control System (3UR-FBE) - Tundra

21247.67 ohms

Short FT #1

Short-term fuel trim
of Bank 1/ Min.: -
100%, Max.: 99.2%

-20 to +20%

This item refers to the short-term fuel
compensation used to maintain the air
fuel ratio at stoichiometric air-fuel
ratio.

Long FT #1

Long-term fuel trim
of Bank 1/ Min.: -
100%, Max.: 99.2%

-20 to +20%

This item refers to the overall fuel
compensation carried out in long-term
to compensate a continual deviation of
the short-term fuel trim from the
central value.

Total FT #1

Total fuel trim of
bank 1 Average
value for fuel trim
system of Bank 1/
Min.: -0.5, Max.:
0.496

-0.2 to 0.2: Idling

-

Short FT #2

Short-term fuel trim
of Bank 2/ Min.: -
100%, Max.: 99.2%

-20 to +20%

This item refers to the short-term fuel
compensation used to maintain the air
fuel ratio at stoichiometric air-fuel
ratio.

Long FT #2

Long-term fuel trim
of Bank 2/ Min.: -
100%, Max.: 99.2%

-20 to +20%

This item refers to the overall fuel
compensation carried out in long-term
to compensate a continual deviation of
the short-term fuel trim from the
central value.

Total FT #2

Total fuel trim of
bank 2 Average
value for fuel trim
system of Bank 2/
Min.: -0.5, Max.:
0.496

-0.2 to 0.2: Idling

-

Fuel System
Status #1

Fuel system status
(Bank 1)/ OL, CL,
OL Drive, OL Fault
or CL Fault

CL: Idling after
warming up



OL (Open Loop): Has not yet
satisfied conditions to go closed
loop.



CL (Closed Loop): Using heated
oxygen sensor as feedback for
fuel control.



OL Drive: Open loop due to
driving conditions (fuel
enrichment).



OL Fault: Open loop due to
detected system fault.



CL Fault: Closed loop but
heated oxygen sensor, which
used for fuel control

2009 Toyota Tundra

2009 ENGINE PERFORMANCE Engine Control System (3UR-FBE) - Tundra

malfunctioning.

Fuel System
Status #2

Fuel system status
(Bank 2)/ OL, CL,
OL Drive, OL Fault
or CL Fault

CL: Idling after
warming up



OL (Open Loop): Has not yet
satisfied conditions to go closed
loop.



CL (Closed Loop): Using heated
oxygen sensor as feedback for
fuel control.



OL Drive: Open loop due to
driving conditions (fuel
enrichment).



OL Fault: Open loop due to
detected system fault.



CL Fault: Closed loop but
heated oxygen sensor, which
used for fuel control
malfunctioning.

Air pump
pressure
(absolute)

Air pump pressure
(absolute)/ Min.: 0
kPa, Max.: 320 kPa

Atmospheric
pressure +1 kPa or
more: Air pump ON,
Air switching valve
open
Close to atmospheric
pressure: Air pump
OFF, Air switching
valve close

Refer to DTC P2431

Air Pump
Pulsation
Pressure

Air pump pulsation
pressure/ Min.: 0
kPa, Max.: 639.98
kPa

-



Cumulative pulsation pressure
calculated by ECM



(See DTC P2431
SECONDARY AIR
INJECTION SYSTEM AIR
FLOW/PRESSURE SENSOR
CIRCUIT
RANGE/PERFORMANCE
BANK 1; DTC P2432
SECONDARY AIR
INJECTION SYSTEM AIR
FLOW/PRESSURE SENSOR
CIRCUIT LOW BANK 1;
DTC P2433 SECONDARY
AIR INJECTION SYSTEM
AIR FLOW/PRESSURE
SENSOR CIRCUIT HIGH
BANK 1; DTC P2436
SECONDARY AIR
INJECTION SYSTEM AIR

2009 Toyota Tundra

2009 ENGINE PERFORMANCE Engine Control System (3UR-FBE) - Tundra