Toyota Tundra (2015 year). Manual — part 2679
FUNCTION
BEHAVIOR DURING CAN FAILURE
CONTROL
MASTER
1.
SYSTEM
RELATED
2.
VEHICLE BEHAVIOR
INDICATOR AND
BUZZER
DIAGNOSTIC
TROUBLE CODE
torque.)
ECM,
Steering
angle
sensor, 4WD
control ECU
2.
TCS control
(Prevents excessive tire
slippage due to engine
torque by decreasing
engine torque and
increasing pressure to
the brakes.)
Brake
actuator
assembly
(skid control
ECU)
1.
ECM,
Steering
angle
sensor, 4WD
control ECU
2.
TCS does not operate.
Light turns on.
U0073
U0100
U0114
U0123
U0126
VSC control
(Reduces excess yaw by
increasing brake
pressure, and induces
necessary yaw by
increasing brake
pressure and reducing
engine torque.)
Brake
actuator
assembly
(skid control
ECU)
1.
ECM,
Steering
angle
sensor, 4WD
control ECU
2.
VSC does not operate.
Light turns on.
U0073
U0100
U0114
U0123
U0126
Memory Mirror
Memorizes
and recalls
the mirror
position.
Retracts the
mirrors
electronically.
Outer
mirror
control ECU
assembly
1.
ECM, Main
body ECU
(driver side
junction
block
assembly),
Front power
seat ECU
and switch
LH
2.
When communication is
lost with the ECM, mirror
position memorization
cannot be performed.
When communication is
lost with the main body
ECU: Manual and
automatic mirror
retraction cannot be
performed.
When communication is
lost with the front power
seat ECU and switch LH:
The position cannot be
memorized or recalled.
Nothing
Nothing
Steering sensor
(Detects the steering
wheel angle.)
Steering
angle sensor
1.
Brake
actuator
assembly
(skid control
ECU)
2.
Periodically sends STR1S01
(STS0=1) every 12 milliseconds.
Brake warning light
turns on.
Nothing
CAN COMMUNICATION: CAN COMMUNICATION SYSTEM: FAIL-...
FUNCTION
BEHAVIOR DURING CAN FAILURE
CONTROL
MASTER
1.
SYSTEM
RELATED
2.
VEHICLE BEHAVIOR
INDICATOR AND
BUZZER
DIAGNOSTIC
TROUBLE CODE
Auto away/return
control
(Controls the auto
away/return operation
according to the SKSW
and IG signals. Prohibits
auto away/return
control.)
Multiplex tilt
and
telescopic
ECU
1.
Main body
ECU (driver
side junction
block
assembly),
Combination
meter
assembly,
Bus buffer
ECU
2.
The memorization, recall,
auto-return and auto-away functions
do not operate.
Nothing
B2621
B2624
Memorization/recall
control
(Controls the steering
wheel position
memorization and recall
for the seat position
memory.)
Multiplex tilt
and
telescopic
ECU
1.
Front power
seat control
ECU and
switch LH
2.
Memorization/recall control does not
operate.
Nothing
B2621
TC DTC output service
(While TC = ON is being
received from the
engine, a DTC is output
in response to the
request from the
combination meter
assembly.)
Combination
meter
assembly
1.
ECM
2.
If the TC signal is lost during TC
service (TC=ON), the TC is
determined to be OFF and TC
service ends.
Nothing
Nothing
Event Data Recorder
(12 EDR)
(Records conditions such
as the vehicle speed,
the amount the
accelerator is
depressed, and the shift
lever position when the
event data recorder
recording conditions are
met.)
Center
airbag
sensor
assembly
1.
ECM, Brake
actuator
assembly
(skid control
ECU),
Steering
angle sensor
2.
When reception is lost, an
invalid value is recorded
in the EDR.
When there is a periodic
problem, the previous
value is maintained.
Nothing
Nothing
Airbag Warning Light
Control
(Sends airbag warning
light illumination
information.)
Combination
meter
assembly
1.
Center
airbag
sensor
assembly
2.
-
Nothing
Nothing
CAN COMMUNICATION: CAN COMMUNICATION SYSTEM: FAIL-...
FUNCTION
BEHAVIOR DURING CAN FAILURE
CONTROL
MASTER
1.
SYSTEM
RELATED
2.
VEHICLE BEHAVIOR
INDICATOR AND
BUZZER
DIAGNOSTIC
TROUBLE CODE
Collision Detection
Signal
perform fuel cut when a
vehicle collision occurs.)
ECM
1.
Center
airbag
sensor
assembly
2.
-
Nothing
Nothing
Seat Belt Warning
Control
(Sends information
about the passengers in
order to turn the seat
belt warning on and
off.)
Main body
ECU (driver
side junction
block
assembly),
Combination
meter
assembly
1.
Center
airbag
sensor
assembly
2.
-
Nothing
Nothing
Tachometer
(Controls the
tachometer according to
engine speed signals.)
Combination
meter
assembly
1.
ECM
2.
The tachometer displays 0 rpm.
Nothing
Nothing
Speedometer
(Controls the
speedometer according
to vehicle speed
signals.)
Combination
meter
assembly
1.
Brake
actuator
assembly
(skid control
ECU)
2.
The speedometer displays 0 km/h (0
mph).
Nothing
Nothing
Engine Coolant
Temperature Gauge
(Controls the
temperature gauge
according to the
temperature signals.)
Combination
meter
assembly
1.
ECM
2.
The temperature gauge needle is at
Nothing
Nothing
ODO/TRIP Meter
(Indicates the driven
distance in the
combination meter
according to the vehicle
speed pulse signal
summation value.)
Combination
meter
assembly
1.
Brake
actuator
assembly
(skid control
ECU)
2.
The calculation stops and the last
displayed value remains.
Nothing
Nothing
Automatic Transmission
Shift Indicator
(Displays shift
Combination
meter
assembly
1.
The automatic transmission shift
indicator turns off.
Nothing
Nothing
CAN COMMUNICATION: CAN COMMUNICATION SYSTEM: FAIL-...
FUNCTION
BEHAVIOR DURING CAN FAILURE
CONTROL
MASTER
1.
SYSTEM
RELATED
2.
VEHICLE BEHAVIOR
INDICATOR AND
BUZZER
DIAGNOSTIC
TROUBLE CODE
information according to
the shift position signal.)
ECM
2.
Brake Warning Light
(Turns the brake
warning light on and
off.)
Combination
meter
assembly
1.
Main body
ECU (driver
side junction
block
assembly),
Brake
actuator
assembly
(skid control
ECU)
2.
The brake warning light illuminates.
The brake warning
light illuminates.
Nothing
SRS Warning Light
(Turns the SRS warning
light on and off.)
Combination
meter
assembly
1.
Center
airbag
sensor
assembly
2.
The SRS warning light illuminates.
The SRS warning light
illuminates.
Nothing
Driver Side Seat Belt
Warning Light
(Turns the driver side
seat belt warning light
on and off.)
Combination
meter
assembly
1.
Main body
ECU (driver
side junction
block
assembly)
2.
The driver side seat belt warning
light illuminates.
The driver side seat
belt warning light
illuminates.
Nothing
All Doors Open Light
(Turns the all doors
open light on and off.)
Combination
meter
assembly
1.
Main body
ECU (driver
side junction
block
assembly)
2.
The all doors open light illuminates.
Nothing
Nothing
BEAM Indicator Light
(Turns the BEAM
indicator light on and
off.)
Combination
meter
assembly
1.
Main body
ECU (driver
side junction
block
assembly)
2.
The BEAM indicator condition is
maintained.
Nothing
Nothing
CAN COMMUNICATION: CAN COMMUNICATION SYSTEM: FAIL-...
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