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-...