Toyota 4Runner manuals

Toyota 4Runner: Terminals Of Ecu

TERMINALS OF ECU

1. RADIO AND DISPLAY RECEIVER ASSEMBLY


Terminal No. (Symbols)

Wiring Color

Terminal Description

Condition

Specification

G48-1 (FR+) - G48-7 (GND)

P - BR

Sound signal (Front Right)

Audio system playing

A waveform synchronized with sounds is output

G48-2 (FL+) - G48-7 (GND)

LG - BR

Sound signal (Front Left)

Audio system playing

A waveform synchronized with sounds is output

G48-3 (ACC) - G48-7 (GND)

GR - BR

Power source (ACC)

Ignition switch off

Below 1 V

Ignition switch ACC

11 to 14 V

G48-4 (B) - G48-7 (GND)

SB - BR

Power source (+B)

Always

11 to 14 V

G48-5 (FR-) - G48-7 (GND)

Y - BR

Sound signal (Front Right)

Audio system playing

A waveform synchronized with sounds is output

G48-6 (FL-) - G48-7 (GND)

L - BR

Sound signal (Front Left)

Audio system playing

A waveform synchronized with sounds is output

G48-7 (GND) - Body ground

BR - Body ground

Ground

Always

Below 1 V

G48-10 (ILL+) - G48-7 (GND)

G - BR

Illumination signal

Light control switch off

Below 1 V

Light control switch in tail or head position

11 to 14 V

G47-1 (RR+) - G48-7 (GND)

R - BR

Sound signal (Rear Right)

Audio system playing

A waveform synchronized with sounds is output

G47-2 (RL+) - G48-7 (GND)

B - BR

Sound signal (Rear Left)

Audio system playing

A waveform synchronized with sounds is output

G47-3 (RR-) - G48-7 (GND)

W - BR

Sound signal (Rear Right)

Audio system playing

A waveform synchronized with sounds is output

G47-5 (ILL-) - G48-7 (GND)

W - BR

Illumination signal

Ignition switch off

Below 1 V

Light control switch in tail or head position

Pulse generation

G47-6 (RL-) - G48-7 (GND)

Y - BR

Sound signal (Rear Left)

Audio system playing

A waveform synchronized with sounds is output

G49-1 (IG) - G48-7 (GND)

L - BR

Power source (IG)

Ignition switch off

Below 1 V

Ignition switch ON

11 to 14 V

G49-2 (REV) - G48-7 (GND)

R - BR

Reverse signal

See "Vehicle Signal Check Mode" in Operation Check (See page )


-

G49-4 (MACC) - G48-7 (GND)

R - BR

Microphone power supply

Ignition switch off

Below 1 V

Ignition switch ACC

4 to 6 V

G49-5 (MIN+) - G48-7 (GND)

B - BR

Microphone voice signal

See "Check Microphone" in Operation Check (See page )


-

G49-6 (SNS2) - G48-7 (GND)

G - BR

Microphone connection detection signal

Always

Below 1 V

G49-9 (CANH)

P

CAN communication signal

-

-

G49-10 (CANL)

W

CAN communication signal

-

-

G49-11 (AGND) - Body ground

Shield - Body ground

Shield ground

Always

Below 1 V

G49-12 (SG) - G48-7 (GND)

Shield - BR

External device connection detection signal

Always

Below 1 V

G49-15 (PKB) - G48-7 (GND)

LG - BR

Parking Bake signal

See "Vehicle Signal Check Mode" in Operation Check (See page )


-

G49-17 (SPD) - G48-7 (GND)

SB - BR

Vehicle speed signal

See "Vehicle Signal Check Mode" in Operation Check (See page )


-

G49-18 (SGND) - Body ground

Shield - Body ground

Shield ground

Always

Below 1 V

G49-19 (MIN-) - G48-7 (GND)

W - BR

Microphone voice signal

See "Check Microphone" in Operation Check (See page )


-

G49-21 (SW1) - G49-23 (SWG)

W - L

Steering pad switch signal

No switch pushed

2.97 to 3.56 V

Up switch pushed

0.27 to 0.35 V

Down switch pushed

0.86 to 1.03 V

Volume+ switch pushed

1.51 to 1.79 V

Volume- switch pushed

2.22 to 2.66 V

G49-22 (SW2) - G49-23 (SWG)

R - L

Steering pad switch signal

No switch pushed

2.97 to 3.56 V

MODE/HOLD switch pushed

0.27 to 0.35 V

On hook switch pushed

0.86 to 1.03 V

Off hook switch pushed

1.51 to 1.79 V

Voice switch pushed

2.22 to 2.66 V

G49-23 (SWG) - Body ground

L - Body ground

Steering pad switch ground

Always

Below 1 V

G49-24 (SW3) - G49-23 (SWG)

P - L

Steering pad switch signal

No switch pushed

2.97 to 3.56 V

Enter switch pushed

0.27 to 0.35 V

Back switch pushed

0.86 to 1.03 V

Right switch pushed

1.51 to 1.79 V

Left switch pushed

2.22 to 2.66 V

G49-25 (ADPG) - G48-7 (GND)

V - BR

External device connection detection signal

External device connected

Below 1 V

External device not connected

2.1 to 3 V

G49-26 (VAR+) - G49-27 (VA-)

R - W

Sound signal (Right)

External device playing (When stereo jack used)

A waveform synchronized with sounds is output

G49-27 (VA-) - G48-7 (GND)

W - BR

Ground

Always

Below 1 V

G49-28 (VAL+) - G49-27 (VA-)

B - W

Sound signal (Left)

External device playing (When stereo jack used)

A waveform synchronized with sounds is output

G50-11 (CA+) - G48-7 (GND)

R - BR

Television camera power supply

Ignition switch ON

Shift lever in R

5.5 to 7.05 V

G50-12 (V+) - G48-7 (GND)

W - BR

Video signal

Ignition switch ON

Shift lever in R

Camera lens not covered, displaying an image

Pulse generation

(Refer to waveform 1)

Ignition switch ON

Shift lever in R

Camera lens covered, blacking out screen

Pulse generation

(Refer to waveform 2)

G50-23 (CGND) - Body ground

Shield - Body ground

Shield ground

Always

Below 1 V

G50-24 (V-) - G48-7 (GND)

B - BR

Ground

Always

Below 1 V

G51-1 (USV1)

#

Power source

-

-

G51-2 (US1-)

#

Data signal

-

-

G51-3 (US1+)

#

Data signal

-

-

G51-4 (UGD1)

#

Ground

-

-

G51-5 (USG1)

#

Shield ground

-

-

G52-1 (FMSUB1)

#

Radio SUB signal

-

-

G52-2 (R+B1) - G48-7 (GND)

# - BR

Power source of antenna

Ignition switch ACC

Radio switch on and FM or AM selected

11 to 14 V

G52-3 (AMFM1)

#

Radio MAIN signal

-

-

s5-1 (USV4)*1

#

Power source

-

-

s5-2 (US4-)*1

#

Data signal

-

-

s5-3 (US4+)*1

#

Data signal

-

-

s5-4 (UGD4)*1

#

Ground

-

-

s6-1 (LV1)*1

B

LVDS communication signal

-

-

t3-3 (ACC2) - G48-7 (GND)*1

Y - BR

Power source (ACC)

Ignition switch off

Below 1 V

Ignition switch ACC

11 to 14V

t3-4 (+B2) - G48-7 (GND)*1

R - BR

Power source (+B)

Always

11 to 14V

t3-8 (GND2) - Body ground*1

B - Body ground

Ground

Always

Below 1 V

#: There is no wire color information.

*1: w/ SDARS System

(a) Reference (Oscilloscope waveform):



(1) Waveform 1 (camera lens not covered, displaying an image)

Item

Content

Measurement terminal

G50-12 (V+) - G48-7 (GND)

Measurement setting

200 mV/DIV., 50 μsec./DIV.

Condition

Ignition switch ON, Shift lever in R

HINT:

The video waveform changes according to the image sent by the television camera assembly.

(2) Waveform 2 (camera lens covered, blacking out the screen)

Item

Content

Measurement terminal

G50-12 (V+) - G48-7 (GND)

Measurement setting

200 mV/DIV., 50 μsec./DIV.

Condition

Ignition switch ON, Shift lever in R

HINT:

The video waveform changes according to the image sent by the rear television camera assembly.

Text in Illustration

*a

Waveform 1 (camera lens not covered, displaying an image)

*b

Waveform 2 (camera lens covered, blacking out the screen)

*c

Synchronization Signal

*d

Video Waveform

2. STEREO COMPONENT TUNER ASSEMBLY (w/ SDARS System)


Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

t2-3 (ACC2) - t2-8 (GND2)

Y - B

Power source (ACC)

Ignition switch off

Below 1 V

Ignition switch ACC

11 to 14 V

t2-4 (+B2) - t2-8 (GND2)

R - B

Power source (+B)

Always

11 to 14 V

t2-8 (GND2) - Body ground

B - Body ground

Ground

Always

Below 1 V

s2-1 (USV4)

#

Power source

-

-

s2-2 (USV4-)

#

Data signal

-

-

s2-3 (USV4+)

#

Data signal

-

-

s2-4 (UGD4)

#

Ground

-

-

s2-5 (USG4)

#

Shield ground

-

-

s4-1 (LV1)

#

LVDS communication signal

-

-

G42-1 (SDARS1)

#

Satellite radio signal

-

-

  • #: There is no wire color information.
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