Toyota Tundra (2015 year). Manual — part 1489
TESTER
DISPLAY
MEASUREMENT
ITEM/RANGE
NORMAL CONDITION
DIAGNOSTIC NOTE
mmHg(abs))
EVAP System
Vent Valve
Key-off EVAP
system vent valve
status/
ON or OFF
-
-
EVAP Purge VSV
VSV status for
EVAP control/
ON or OFF
-
-
Purge Cut VSV
Duty
Purge VSV duty/
Min.: 0%, Max.:
399.9%
-
-
Target Air-Fuel
Ratio
Target air fuel
ratio/
Min.: 0, Max.:
1.99
0.8 to 1.2: During idling
-
AF Lambda
B1S1
Output air fuel
ratio associated
with 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
-
AF Lambda
B2S1
Output air fuel
ratio associated
with Bank 2
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
-
AFS Voltage
B1S1
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
B2S1
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
B1S1
Air fuel ratio
sensor current
(for Bank 1
Sensor 1)/
-0.5 to 0.5 mA: Idling
Performing Control the Injection Volume
or Control the Injection Volume for A/F
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: DATA LIST ...
TESTER
DISPLAY
MEASUREMENT
ITEM/RANGE
NORMAL CONDITION
DIAGNOSTIC NOTE
Min.: -128 mA,
Max.: 127.99 mA
sensor.
AFS Current
B2S1
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.
A/F Heater Duty
#1
A/F heater duty
ratio (for Bank 1)
Min.: 0%, Max.:
399.9%
0 to 100%
-
A/F Heater Duty
#2
A/F heater duty
ratio (for Bank 2)
Min.: 0%, Max.:
399.9%
0 to 100%
-
O2S B1S2
Heated oxygen
sensor output
voltage (for Bank
1 Sensor 2)/
Min.: 0 V, Max.:
1.275 V
0.1 to 0.9 V:
Driving 70 km/h (44 mph)
Performing the Control the Injection
Volume or Control the Injection Volume
Heated oxygen
sensor output
voltage (for Bank
2 Sensor 2)/
Min.: 0 V, Max.:
1.275 V
0.1 to 0.9 V:
Driving 70 km/h (44 mph)
Performing the Control the Injection
Volume or Control the Injection Volume
B1S2
Sub heated
oxygen sensor
impedance (Bank
1 Sensor 2)/
Min.: 0 ohm,
Max.: 21247.67
ohm
5 to 15000 ohm
After driving approx. 10 min. in urban
area
O2S Impedance
B2S2
Sub heated
oxygen sensor
impedance (Bank
2 Sensor 2)/
Min.: 0 ohm,
Max.: 21247.67
ohm
5 to 15000 ohm
After driving approx. 10 min. in urban
area
O2 Heater B1S2
Heated oxygen
sensor heater (for
Bank 1 Sensor 2)/
Active or Not Act
-
-
O2 Heater B2S2
Heated oxygen
sensor heater (for
Bank 2 Sensor 2)/
-
-
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: DATA LIST ...
TESTER
DISPLAY
MEASUREMENT
ITEM/RANGE
NORMAL CONDITION
DIAGNOSTIC NOTE
Active or Not Act
O2 Heater Curr
Val B1S2
Heated oxygen
sensor current
(for Bank 1
Sensor 2)/
Min.: 0 A, Max.:
4.9 A
-
-
O2 Heater Curr
Val B2S2
Heated oxygen
sensor current
(for Bank 2
Sensor 2)/
Min.: 0 A, Max.:
4.9 A
-
-
Short FT #1
Short-term fuel
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
Max.: 99.2%
-20 to +20%
This item refers to the overall
fuel compensation carried out in
long-term to compensate a
central value.
Air fuel ratio feedback leaning is
divided up according to the
engine operating range (engine
speed * load), and separate
values are stored for each
operating range. "Long FT #1"
indicates the learned value for
the current operating range.
[A/F Learn Value Idle #1], [A/F
Learn Value Low #1], [A/F
Learn Value Mid1 #1], [A/F
Learn Value Mid2 #1] and [A/F
Learn Value High #1] indicate
the learned values for the
different operating ranges. The
learned value that is the same
as "Long FT #1" indicates the
current engine operating range.
A/F Learn Value
Idle #1
Air fuel ratio
learned value for
idling (for Bank
1)/
Min.: -50%, Max.:
49.6%
-20 to +20%
Learning is performed when idling with the
engine warmed up (engine coolant
temperature is 80°C [176°F] or higher).
A/F Learn Value
Low #1
Air fuel ratio
learned value for
-20 to +20%
Learning is performed when driving with
the engine warmed up (engine coolant
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: DATA LIST ...
TESTER
DISPLAY
MEASUREMENT
ITEM/RANGE
NORMAL CONDITION
DIAGNOSTIC NOTE
low engine loads
(for Bank 1)/
Min.: -50%, Max.:
49.6%
temperature is 80°C [176°F] or higher)
and operating in the low load range (when
A/F Learn Value
Mid1 #1
Air fuel ratio
learned value for
mid-sized engine
loads 1 (for Bank
1)/
Min.: -50%, Max.:
49.6%
-20 to +20%
Learning is performed when driving with
the engine warmed up (engine coolant
temperature is 80°C [176°F] or higher)
and operating in the midsize load range
closer to the low load range (when the
A/F Learn Value
Mid2 #1
Air fuel ratio
learned value for
mid-sized engine
loads 2 (for Bank
1)/
Min.: -50%, Max.:
49.6%
-20 to +20%
Learning is performed when driving with
the engine warmed up (engine coolant
temperature is 80°C [176°F] or higher)
and operating in the midsize load range
closer to the high load range (when the
A/F Learn Value
High #1
Air fuel ratio
learned value for
high engine loads
(for Bank 1)/
Min.: -50%, Max.:
49.6%
-20 to +20%
Learning is performed when driving with
the engine warmed up (engine coolant
temperature is 80°C [176°F] or higher)
and operating in the high load range
Total FT #1
Total fuel trim of
bank 1
Average value for
fuel trim system
0.496
-0.2 to 0.2: Idling
-
Short FT #2
Short-term fuel
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
Max.: 99.2%
-20 to +20%
This item refers to the overall
fuel compensation carried out in
long-term to compensate for a
central value.
Air-fuel ratio feedback learning
is divided up according to the
engine operating range (engine
speed x load), and separate
values are stored for each
operating range. "Long FT #2"
indicates the learned value for
the current operating range.
[A/F Learn Value Idle #2], [A/F
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: DATA LIST ...
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