Toyota Tundra. Manual — part 416

Fig. 19: Identifying K20 Connector Terminal
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

K20 CONNECTOR TERMINAL VOLTAGE SPECIFICATIONS

Terminal No.

(Symbols)

Wiring

Color

Terminal

Description

Condition

Specified Condition

K20-3* (RR) -

Body ground

W - Body

ground

Ultrasonic sensor

(for rear corner

RH)

Clearance warning indicator LED

for rear corner RH illuminates

Below 3 V

K20-4* (FR) -

Body ground

Y - Body

ground

Ultrasonic sensor

(for front corner

RH)

Clearance warning indicator LED

for front corner RH illuminates

Below 3 V

K20-5* (BK) -

Body ground

O - Body

ground

Ultrasonic sensor

(for rear corner LH

and RH)

Clearance warning indicator LED

for back right and left sensor

illuminates

Below 3 V

K20-6* (OP) -

Body ground

P - Body

ground

Clearance warning

ECU signal

Clearance warning indicator's

operation indicator illuminates

Below 3 V

K20-7* (RL) -

Body ground

GR -

Body

ground

Ultrasonic sensor

(for rear corner

LH)

Clearance warning indicator LED

for rear corner LH illuminates

Below 3 V

K20-8* (FL) -

Body ground

LG -

Body

ground

Ultrasonic sensor

(for front corner

LH)

Clearance warning indicator LED

for front corner LH illuminates

Below 3 V

K20-10* (TX-

) - Body

ground

V - Body

ground

Cruise information

signal

Cruise information displays

Communication

signal

K20-11* (BZ)

- Body ground

L - Body

ground

Clearance warning

buzzer

Clearance warning buzzer

sounding (when the back sonar or

clearance sonar senses something)

Pulse generation

K20-12 (E)-

Body ground

W-B -

Body

ground

ECU ground

Always

Below 1 ohms

K20-16

(MHTR) -

Body ground

BR -

Body

ground

Security indicator

signal

Security indicator illuminates

(illuminates only for 60 sec. in

alarm sounding states (blinks when

system is in armed state))

3 to 5V

Alternating between

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Meter - Tundra

3. CHECK COMBINATION METER INNER CIRCUIT

K20-17 (LP) -

Body ground

V - Body

ground

Security indicator

light signal

Immobiliser set status (SET)

11 to 14 V and below

1 V

Immobiliser set status (UNSET)

Below 1 V

K20-20* (ILL-

) - Body

ground

B - Body

ground

Illumination signal

Ignition switch ON

11 to 14 V

K20-21 (ILL+)

- Body ground

O - Body

ground

Illumination signal

Headlight dimmer switch ON

11 to 14 V

K20-22 (ACC)

- Body ground

GR -

Body

ground

ACC power source

Ignition switch ACC

11 to 14 V

K20-23 (IG) -

Body ground

G - Body

ground

IG power source

Ignition switch ON

11 to 14 V

K20-24 (B) -
Body ground

R - Body

ground

+B power source

Always

11 to 14 V

HINT:
*: w/ Cruise information

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Meter - Tundra

Fig. 20: Combination Meter Inner Circuit Diagram (1 Of 6)
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Meter - Tundra

Fig. 21: Combination Meter Inner Circuit Diagram (2 Of 6)
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Meter - Tundra