Toyota Tundra. Manual — part 537

CD sound skips

Navigation receiver (for Column
Shift Type)

NAVIGATION RECEIVER
(FOR COLUMN SHIFT TYPE)

Navigation receiver (for Floor
Shift Type)

NAVIGATION RECEIVER
(FOR FLOOR SHIFT TYPE)

Abnormal noise occurs

Proceed to "Noise Occurs"

NOISE OCCURS

Navigation receiver (for Column
Shift Type)

NAVIGATION RECEIVER
(FOR COLUMN SHIFT TYPE)

Navigation receiver (for Floor
Shift Type)

NAVIGATION RECEIVER
(FOR FLOOR SHIFT TYPE)

Poor sound quality in all modes
(low volume)

Proceed to "Poor Sound Quality in
All Modes (Low Volume)"

POOR SOUND QUALITY IN
ALL MODES (LOW
VOLUME)

Navigation receiver power source
circuit

NAVIGATION RECEIVER
ASSEMBLY POWER SOURCE
CIRCUIT

Navigation receiver (for Column
Shift Type)

NAVIGATION RECEIVER
(FOR COLUMN SHIFT TYPE)

Navigation receiver (for Floor
Shift Type)

NAVIGATION RECEIVER
(FOR FLOOR SHIFT TYPE)

External device sound cannot be
heard or sound quality bad (stereo
jack is used).

Sound signal circuit between
navigation receiver and stereo jack
adapter

SOUND SIGNAL CIRCUIT
BETWEEN NAVIGATION
RECEIVER ASSEMBLY AND
STEREO JACK ADAPTER

Stereo jack adapter (for Column
Shift Type)

NAVIGATION RECEIVER
(FOR COLUMN SHIFT TYPE)

Stereo jack adapter (for Floor
Shift Type)

NAVIGATION RECEIVER
(FOR FLOOR SHIFT TYPE)

Navigation receiver power source
circuit

NAVIGATION RECEIVER
ASSEMBLY POWER SOURCE
CIRCUIT

Navigation receiver (for Column
Shift Type)

NAVIGATION RECEIVER
(FOR COLUMN SHIFT TYPE)

Navigation receiver (for Floor
Shift Type)

NAVIGATION RECEIVER
(FOR FLOOR SHIFT TYPE)

Music played by television display
can be heard through headphones
but cannot be heard from
speakers*

Sound signal circuit between
navigation receiver assembly and
television display assembly

SOUND SIGNAL CIRCUIT
BETWEEN NAVIGATION
RECEIVER ASSEMBLY AND
TELEVISION DISPLAY
ASSEMBLY

Replace television display

REMOVAL

Navigation receiver (for Column
Shift Type)

NAVIGATION RECEIVER
(FOR COLUMN SHIFT TYPE)

Navigation receiver (for Floor
Shift Type)

NAVIGATION RECEIVER
(FOR FLOOR SHIFT TYPE)

HINT:

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Navigation - Tundra

TERMINALS OF ECU

1. CHECK NAVIGATION RECEIVER

Fig. 288: Identifying Connector Terminals Of ECU
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

a. Disconnect the K18 receiver connector.

b. Measure the resistance and voltage according to the value(s) in the table below.

NAVIGATION RECEIVER RESISTANCE AND VOLTAGE

If the result is not as specified, there may be a malfunction on the wire harness side.

c. Reconnect the K18 receiver connector.

d. Measure the voltage according to the value(s) in the table below.

NAVIGATION RECEIVER VOLTAGE

*: w/ Rear Seat Entertainment System

Terminal No. (Symbols) Wiring Color

Terminal

Description

Condition

Specified

Condition

K18-20 (GND) - Body

ground

W-B - Body

ground

Ground

Always

Below 1 ohms

K18-1 (B) - K18-20

(GND)

L - W-B

Battery

Always

11 to 14 V

K18-11 (ACC) - K18-20

(GND)

GR - W-B

ACC power supply

Ignition switch

OFF

Below 1 V

K18-11 (ACC) - K18-20

(GND)

GR - W-B

ACC power supply

Ignition switch

ACC

11 to 14 V

Terminal No. Wiring

Terminal

Condition

Specified Condition

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Navigation - Tundra

(Symbols)

Color

Description

K18-2 (ILL+)

- K18-20

(GND)

SB - W-B Illumination signal

Light control switch OFF

Below 1 V

K18-2 (ILL+)

- K18-20

(GND)

SB - W-B Illumination signal

Light control switch TAIL or

HEAD

11 to 14 V

K18-12(ILL-)

- K18-20

(GND)

O - W-B Illumination signal

Light control switch OFF

Below 1 V

K18-12(ILL-)

- K18-20

(GND)

O - W-B Illumination signal

Light control switch TAIL or

HEAD

11 to 14 V

K18-15

(ATX-) -

K18-20

(GND)

P - W-B

AVC-LAN

communication

signal

Ignition switch ACC

2 to 3V

K18-5

(ATX+) -

K18-20

(GND)

V - W-B

AVC-LAN

communication

signal

Ignition switch ACC

2 to 3V

K21-13

(SLD1) -

K18-20

(GND)

Shielded

- W-B

Shielded ground

Always

Below 1 V

K21-12(IVO-)

- K18-20

(GND)

BR - W-

B

Voice guidance

signal

Voice guidance is provided

Waveform
synchronized with
sounds is output

K21-11

(IVO+) - K18-

20 (GND)

Y - W-B

Voice guidance

signal

Voice guidance is provided

Waveform
synchronized with
sounds is output

K18-7

(MUTE) -

K18-20

(GND)

GR - W-

B

Mute signal

Audio system playing -->

changing modes

3.5 or higher -->
Below 1 V

K18-10(SLD)

- K18-20

(GND)

Shielded

- W-B

Shielded

Always

Below 1 V

K18-8 (R+) -

K18-20

(GND)

W - W-B Sound signal (right)

Audio system is playing

Waveform
synchronized with
sound is output

K18-18(R-) -

K18-20

(GND)

R - W-B Sound signal (right)

Audio system is playing

Waveform
synchronized with
sound is output

K18-9 (L+) -

K18-20

G - W-B

Sound signal (left)

Audio system is playing

Waveform
synchronized with

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Navigation - Tundra

(GND)

sound is output

K18-19(L-) -

K18-20

(GND)

B - W-B

Sound signal (left)

Audio system is playing

Waveform
synchronized with
sound is output

K6-3(SPD) -

K18-20

(GND)

W - W-B

Speed signal from

combination meter

See "Vehicle Signal Check"

mode (see DISPLAY

CHECK MODE )

-

K7-12(TSW-)

- K18-20

(GND)

W-B -

W-B

Telephone related

switch ground

Always

Below 1 V

K7-18

(SGND) -

K18-20

(GND)

W-B -

W-B

Telephone related

switch ground

Always

Below 1 V

K6-5 (REV) -

K18-20

(GND)

G - W-B

Reverse signal

See "Vehicle Signal Check"

mode (see DISPLAY

CHECK MODE )

-

K5-3(VAL+)

- K18-20

(GND)

B - W-B

Aux sound signal

(left)

External device is playing

(When stereo jack is used)

Waveform
synchronized with
sound is output

K5-2 (VAR+)

- K18-20

(GND)

R - W-B

Aux sound signal

(right)

External device is playing

(When stereo jack is used)

Waveform
synchronized with
sound is output

K5-5(VA-) -

K18-20

(GND)

W - W-B

Shielded ground

Always

Below 1 V

K5-6(ADPG)

- K18-20

(GND)

SB - W-B

External device

connection detection

signal

External device is connection

Below 1 V

K21-7(SW1) -

K18-20

(GND)

LG - W-

B

Steering pad switch

signal

Steering switch not pushed

4 to 6V

K21-7(SW1) -

K18-20

(GND)

LG - W-

B

Steering pad switch

signal

Steering switch Seek+ switch

pushed

Approx. 0.5 V

K21-7(SW1) -

K18-20

(GND)

LG - W-

B

Steering pad switch

signal

Steering switch Seek-switch

pushed

Approx. 0.9 V

K21-7(SW1) -

K18-20

(GND)

LG - W-

B

Steering pad switch

signal

Steering switch Volume+

switch pushed

Approx. 2.0 V

K21-7(SW1) -

K18-20

(GND)

LG - W-

B

Steering pad switch

signal

Steering switch Volume-

switch pushed

Approx. 3.4 V

K21-6(SWG) BR - W- Steering pad switch

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Navigation - Tundra