Toyota Tundra. Manual — part 182
Stereo component amplifier
STEREO COMPONENT
AMPLIFIER
Radio receiver (for Column Shift
Type)
RADIO RECEIVER (FOR
COLUMN SHIFT TYPE)
Radio receiver (for Floor Shift
Type)
RADIO RECEIVER (FOR
FLOOR SHIFT TYPE)
Sound quality is bad in all modes.
(Volume is too low.) (for built-in
type amplifier system)
Proceed to "Poor Sound Quality in
All Modes (Low Volume)"
POOR SOUND QUALITY IN
ALL MODES (LOW VOLUME)
Speaker circuit (Built-in
Amplifier)
SPEAKER CIRCUIT (BUILT-
IN AMPLIFIER)
Radio receiver (for Column Shift
Type)
RADIO RECEIVER (FOR
COLUMN SHIFT TYPE)
Radio receiver (for Floor Shift
Type)
RADIO RECEIVER (FOR
FLOOR SHIFT TYPE)
ASL does not function, (for
separate type amplifier system)
Proceed to "Vehicle Speed Signal
Circuit between Stereo
Component Amplifier and
Combination Meter"
VEHICLE SPEED SIGNAL
CIRCUIT BETWEEN STEREO
COMPONENT AMPLIFIER
AND COMBINATION METER
ASL does not function, (for built-
in type amplifier system)
Proceed to "Vehicle Speed Signal
Circuit between Radio Receiver
and Combination Meter"
VEHICLE SPEED SIGNAL
CIRCUIT BETWEEN RADIO
RECEIVER AND
COMBINATION METER
External device sound cannot be
heard or sound quality is bad.
(Stereo jack is used.)
Radio receiver power source
circuit
RADIO RECEIVER POWER
SOURCE CIRCUIT
Proceed to "Sound Signal Circuit
between Radio Receiver and
Stereo Jack Adapter"
SOUND SIGNAL CIRCUIT
BETWEEN RADIO RECEIVER
AND STEREO JACK
ADAPTER
Stereo jack adapter (for Column
Shift Type)
STEREO JACK ADAPTER
ASSEMBLY (FOR COLUMN
SHIFT TYPE)
Stereo jack adapter (for Floor
Shift Type)
STEREO JACK ADAPTER
ASSEMBLY (FOR FLOOR
SHIFT TYPE)
Radio receiver (for Column Shift
Type)
RADIO RECEIVER (FOR
COLUMN SHIFT TYPE)
Radio receiver (for Floor Shift
Type)
RADIO RECEIVER (FOR
FLOOR SHIFT TYPE)
Abnormal noise occurs, (for
separate type amplifier system)
Proceed to "Noise occurs"
NOISE OCCURS
Stereo component amplifier
STEREO COMPONENT
AMPLIFIER
Radio receiver (for Column Shift
Type)
RADIO RECEIVER (FOR
COLUMN SHIFT TYPE)
Radio receiver (for Floor Shift
Type)
RADIO RECEIVER (FOR
FLOOR SHIFT TYPE)
2009 Toyota Tundra
2009 ACCESSORIES AND EQUIPMENT Audio/Visual - Tundra
Steering Pad Switch Function:
PROBLEM SYMPTOMS TABLE - STEERING PAD SWITCH FUNCTION
"Bluetooth" Function*:
Abnormal noise occurs, (for built-
in type amplifier system)
Proceed to "Noise occurs"
NOISE OCCURS
Radio receiver (for Column Shift
Type)
RADIO RECEIVER (FOR
COLUMN SHIFT TYPE)
Radio receiver (for Floor Shift
Type)
RADIO RECEIVER (FOR
FLOOR SHIFT TYPE)
Radio broadcast cannot be
received or poor reception.
Proceed to "Radio Broadcast
cannot be Received (Poor
Reception)"
RADIO BROADCAST
CANNOT BE RECEIVED (BAD
RECEPTION)
CD cannot be inserted / played or
CD is ejected right after insertion.
Radio receiver power source
circuit
RADIO RECEIVER POWER
SOURCE CIRCUIT
Proceed to "CD cannot be
Inserted / Played or CD is Ejected
Right After Insertion"
CD CANNOT BE INSERTED /
PLAYED OR CD IS EJECTED
RIGHT AFTER INSERTION
CD cannot be ejected.
Radio receiver power source
circuit
RADIO RECEIVER POWER
SOURCE CIRCUIT
Proceed to "CD cannot be
Ejected"
CD CANNOT BE EJECTED
Sound quality is bad only when
CD is played. (Volume is too
low.)
Proceed to "Sound Quality is Bad
Only when CD is Played (Volume
is Too Low)"
SOUND QUALITY IS BAD
ONLY WHEN CD IS PLAYED
(VOLUME IS TOO LOW)
CD sound skips.
Proceed to "CD Sound Skips"
CD SOUND SKIPS
Radio receiver cannot be
illuminated at night.
Illumination circuit
ILLUMINATION CIRCUIT
Radio receiver (for Column Shift
Type)
RADIO RECEIVER (FOR
COLUMN SHIFT TYPE)
Radio receiver (for Floor Shift
Type)
RADIO RECEIVER (FOR
FLOOR SHIFT TYPE)
Symptom
Suspected Area
Refer To
Audio system cannot be operated
with steering pad switch.
Steering pad switch circuit
STEERING PAD SWITCH
CIRCUIT
Radio receiver (for Column Shift
Type)
RADIO RECEIVER (FOR
COLUMN SHIFT TYPE)
Radio receiver (for Floor Shift
Type)
RADIO RECEIVER (FOR
FLOOR SHIFT TYPE)
Steering pad switch cannot be
illuminated at night.
Illumination circuit
ILLUMINATION CIRCUIT
Radio receiver (for Column Shift
Type)
RADIO RECEIVER (FOR
COLUMN SHIFT TYPE)
Radio receiver (for Floor Shift
Type)
RADIO RECEIVER (FOR
FLOOR SHIFT TYPE)
2009 Toyota Tundra
2009 ACCESSORIES AND EQUIPMENT Audio/Visual - Tundra
PROBLEM SYMPTOMS TABLE - BLUETOOTH FUNCTION
TERMINALS OF ECU
Symptom
Suspected Area
Refer To
Cellular phone registration
failure, phone directory transfer
failure.
Proceed to "Cellular Phone
Registration Failure, Phone
Directory Transfer Failure"
CELLULAR PHONE
REGISTRATION FAILURE,
PHONE DIRECTORY
TRANSFER FAILURE
Cellular phone cannot send /
receive.
Proceed to "Cellular Phone cannot
Send / Receive"
CELLULAR PHONE CANNOT
SEND / RECEIVE
Steering pad switch circuit
STEERING PAD SWITCH
CIRCUIT
Radio receiver (for Column Shift
Type)
RADIO RECEIVER (FOR
COLUMN SHIFT TYPE)
Radio receiver (for Floor Shift
Type)
RADIO RECEIVER (FOR
FLOOR SHIFT TYPE)
The other caller's voice cannot be
heard, is too quiet, or distorted.
Proceed to "The Other Caller's
Voice cannot be Heard, is too
Quiet, or Distorted"
THE OTHER CALLER'S
VOICE CANNOT BE HEARD,
IS TOO QUIET, OR
DISTORTED
Proceed to "Cellular Phone Voice
Circuit between Radio Receiver
and Stereo Component Amplifier"
CELLULAR PHONE VOICE
CIRCUIT BETWEEN RADIO
RECEIVER AND STEREO
COMPONENT AMPLIFIER
Radio receiver (for Column Shift
Type)
RADIO RECEIVER (FOR
COLUMN SHIFT TYPE)
Radio receiver (for Floor Shift
Type)
RADIO RECEIVER (FOR
FLOOR SHIFT TYPE)
Stereo component amplifier
STEREO COMPONENT
AMPLIFIER
The other caller cannot hear your
voice, or your voice is too quiet
or distorted.
Proceed to "The Other Caller
cannot Hear Your Voice, or Your
Voice is too Quiet or Distorted"
THE OTHER CALLER
CANNOT HEAR YOUR
VOICE, OR YOUR VOICE IS
TOO QUIET OR DISTORTED
Proceed to "Microphone Circuit
between Microphone and Radio
Receiver"
MICROPHONE CIRCUIT
BETWEEN MICROPHONE
AND RADIO RECEIVER
Roof console box assembly
(Built-in microphone)
REMOVAL
Radio receiver (for Column Shift
Type)
RADIO RECEIVER (FOR
COLUMN SHIFT TYPE)
Radio receiver (for Floor Shift
Type)
RADIO RECEIVER (FOR
FLOOR SHIFT TYPE)
HINT:
*: w/ Built-in "Bluetooth" Receiver Antenna
2009 Toyota Tundra
2009 ACCESSORIES AND EQUIPMENT Audio/Visual - Tundra
1. CHECK RADIO RECEIVER (for Separate Type Amplifier System)
Fig. 140: Identifying Radio Receiver (For Separate Type Amplifier System) Connectors Terminals
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
VOLTAGE SPECIFICATION
Terminal No.
(Symbols)
Wiring
Color
Terminal Description
Condition
Specified Condition
K4-1 (B) - K4-20
(GND)
L - W-B
Battery
Always
11 to 14 V
K4-2 (ILL+) -
K4-20 (GND)
SB - W-B Illumination signal
Light control switch
OFF --> TAIL
Below 1 V --> 11 to
14V
K4-5 (ATX+) -
K4-20 (GND)
V - W-B
AVC-LAN
communication signal
Ignition switch ACC
2 to 3V
K4-7 (MUTE) -
K4-20 (GND)
GR - W-B MUTE signal
Audio system is playing
--> Changing modes
Above 3.5 V --> Below
1 V
K4-8 (R+) - K4-
20 (GND)
W - W-B
Sound signal (Right)
Audio system is playing
A waveform
synchronized with
sounds is output
K4-9 (L+) - K4-
20 (GND)
G - W-B
Sound signal (Left)
Audio system is playing
A waveform
synchronized with
sounds is output
K4-10(SLD) -
Body ground
Shielded -
Body ground
Shield ground
Always
Below 1 V
K4-11 (ACC) -
K4-20 (GND)
GR - W-B Accessory (ON)
Ignition switch ACC
10 to 14V
K4-12(ILL-) -
K4-20 (GND)
O - W-B
Illumination (rheostat)
signal
Light control switch
OFF --> TAIL
Below 1 V --> Pulse
generation
K4-15(ATX-) -
K4-20 (GND)
P - W-B
AVC-LAN
communication signal
Ignition switch ACC
2 to 3V
K4-18(R-) - K4-
20 (GND)
R - W-B
Sound signal (Right)
Audio system is playing
A waveform
synchronized with
sounds is output
K4-19(L-) - K4-
20 (GND)
B - W-B
Sound signal (Left)
Audio system is playing
A waveform
synchronized with
sounds is output
K4-20 (GND) -
Body ground
W-B - Body
ground
Ground
Always
Below 1 V
2009 Toyota Tundra
2009 ACCESSORIES AND EQUIPMENT Audio/Visual - Tundra
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