Toyota Camry owners & service manuals

Toyota Camry: Terminals Of Ecu

TERMINALS OF ECU

HINT:

Check from the rear of the connector while it is connected to the components.

RADIO AND DISPLAY RECEIVER ASSEMBLY

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

K4-1 (FR+) - K3-1 (GND1)

W - BR

Sound signal (Right)

Audio system playing

A waveform synchronized with sound signals is output

K4-2 (FL+) - K3-1 (GND1)

B - BR

Sound signal (Left)

Audio system playing

A waveform synchronized with sound signals is output

K4-3 (RL+) - K3-1 (GND1)

Y - BR

Voice signal

Audio system playing

A waveform synchronized with sound signals is output

K4-6 (FR-) - K3-1 (GND1)

R - BR

Sound signal (Right)

Audio system playing

A waveform synchronized with sound signals is output

K4-7 (FL-) - K3-1 (GND1)

G - BR

Sound signal (Left)

Audio system playing

A waveform synchronized with sound signals is output

K4-8 (RL-) - K3-1 (GND1)

BR - BR

Voice signal

Audio system playing

A waveform synchronized with sound signals is output

K3-1 (GND1) - Body ground

BR - Body ground

Ground

Always

Below 1 V

K3-4 (+B1) - K3-1 (GND1)

LG - BR*1

R - BR*2

Power source (+B)

Always

11 to 14 V

K3-5 (TX1+)

B

AVC-LAN communication signal

-

-

K3-6 (TX1-)

W

AVC-LAN communication signal

-

-

K3-15 (ACC1) - K3-1 (GND1)

GR - BR

Power source (ACC)

Engine switch off

Below 1 V

Engine switch on (ACC)

11 to 14 V

K3-21 (SW1) - K3-24 (SWG)

W - L

Steering pad switch signal

No switch pushed

2.97 to 3.56 V

Seek+ switch pushed

0.27 to 0.35 V

Seek- switch pushed

0.86 to 1.03 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

K3-22 (SW2) - K3-24 (SWG)

LG - L

Steering pad switch signal

No switch pushed

2.97 to 3.56 V

MODE switch pushed

0.27 to 0.35 V

On/off hook switch pushed

1.51 to 1.79 V

Voice switch pushed

2.22 to 2.66 V

K3-24 (SWG) - K3-1 (GND1)

L - BR

Steering pad switch ground

Always

Below 1 V

K3-25 (MUT1) - K3-1 (GND1)

BE - BR

Mute signal

Audio system playing

2.0 V or higher

Audio system changing modes

Below 1 V

K3-27 (SPD) - K3-1 (GND1)

LG - BR

Vehicle speed signal

See "Check Vehicle Signal" in Operation Check

Click here

-

K3-28 (REV) - K3-1 (GND1)

W - BR

Reverse signal

See "Check Vehicle Signal" in Operation Check

-

K2-5 (CNH1)

L

Local bus communication signal

-

-

K2-6 (CNL1)

W

Local bus communication signal

-

-

K2-13 (CANH)

B

CAN communication signal

-

-

K2-14 (CANL)

W

CAN communication signal

-

-

K2-15 (ILL+) - K3-1 (GND1)

G - BR

Illumination signal

Light control switch off

Below 1 V

Light control switch in tail or head position

11 to 14 V

K2-16 (ILL-) - K3-1 (GND1)

BE - BR

Illumination signal

Light control switch off

Below 1 V

Light control switch in tail or head position

Pulse generation

K2-19 (IG) - K3-1 (GND1)

W - BR

Power source (IG)

Engine switch off

Below 1 V

Engine switch on (IG)

11 to 14 V

K2-20 (PKB) - K3-1 (GND1)

B - BR

Parking brake signal

See "Check Vehicle Signal" in Operation Check

Click here

-

K2-21 (MIN+) - K3-1 (GND1)

SB - BR*1

W - BR*2

Microphone voice signal

See "Check Microphone" in Operation Check

Click here

-

K2-22 (MIN-) - K3-1 (GND1)

V - BR*1

R - BR *2

Microphone voice signal

See "Check Microphone" in Operation Check

Click here

-

K2-23 (MACC) - K3-1 (GND1)*2

B - BR

Microphone power supply

Engine switch off

Below 1 V

Engine switch on (ACC)

4 to 6 V

K2-24 (SGND) - Body ground

Shield - Body ground

Shield ground

Always

Below 1 V

K2-25 (SNS2) - K3-1 (GND1)

BE - BR

Microphone connection detection signal

Always

Below 1 V

K135-1 (USV1)

-

Power source

-

-

K135-2 (US1-)

-

Data signal

-

-

K135-3 (US1+)

-

Data signal

-

-

K135-4 (UOD1)

-

Ground

-

-

K135-5 (USG1)

-

Shield ground

-

-

r3-1 (US4+)

-

USB communication line

-

-

r3-2 (US4-)

-

USB communication line

-

-

r3-3 (UGD4)

Shield - Body ground

Shield ground

Always

Below 1 Ω

r2-1 (GV2-)

-

Video signal (Digital)

-

-

r2-2 (GV2+)

-

Video signal (Digital)

-

-

r2-3 (GVG2) - Body ground

Shield - Body ground

Shield ground

Always

Below 1 Ω

K1-7 (SUP) - K3-1 (GND1)

B - BR

Start up signal

20 seconds elapse after turning the engine switch on (ACC)

11 to 14 V

K1-10 (USBV)*1

L

DCM (telematics transceiver) power supply

Engine switch off

Below 1 V

Engine switch on (ACC)

4.75 to 5.25 V

K1-11 (USBG)*1

GR

Ground

-

-

K1-12 (SGND) - Body ground

Shielded - Body ground

Shield ground

Always

Below 1 Ω

K1-19 (RST)*3

R

-

-

-

K1-22 (SI+) - K3-1 (GND1)

SB - BR

Voice signal

Voice guidance sounding

A waveform synchronized with sound is output

K1-23 (SI-) - K3-1 (GND1)

V - BR

Voice signal

Voice guidance sounding

A waveform synchronized with sound is output

K1-24 (SGND) - K3-1 (GND1)

Shielded - BR

Shield ground

Always

Below 1 Ω

K1-25 (MCO+) - K1-26 (MCO-)

W - B

Microphone voice signal

See "Check Microphone (DCU)" in Operation Check

-

K1-26 (MCO-) - K3-1 (GND1)

B - BR

Microphone voice signal

See "Check Microphone (DCU)" in Operation Check

-

K1-28 (REV2) - K3-1 (GND1)

W - BR

Reverse signal

Engine running, shift position not in R → in R

2 V or less → 11 to 14 V

RA-5 (ANT+) - K3-1 (GND1)

- - BR

Power source of antenna

Engine switch on (ACC)

Radio switch on and FM or AM selected

11 to 14 V

  • *1: w/ Manual (SOS) Switch
  • *2: w/o Manual (SOS) Switch
  • *3: It is connected, but not used

NAVIGATION ECU

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

K17-6 (VOI+) - K17-23 (GND)

SB - W-B

Voice signal

Voice guidance sounding

A waveform synchronized with sound is output

K17-7 (VOI-) - K17-23 (GND)

V - W-B

Voice signal

Voice guidance sounding

A waveform synchronized with sound is output

K17-8 (SLD1) - Body ground

Shielded - Body ground

Shield ground

Always

Below 1 Ω

K17-9 (SPD) - K17-23 (GND)

BE - W-B

Vehicle speed signal

See "Check GPS and Vehicle Sensors" in Operation Check

-

K17-10 (+B) - K17-23 (GND)

GR - W-B

Power source (+B)

Always

11 to 14 V

K17-13 (MIC+) - K17-23 (GND)

W - W-B

Microphone voice signal

See "Microphone Check (MEU)" in Operation Check

-

K17-14 (MIC-) - Body ground

B - Body ground

Microphone voice signal

See "Microphone Check (MEU)" in Operation Check

-

K17-19 (REV2) - K17-23(GND)

W - W-B

Reverse signal

Engine running, shift position not in R → in R

2 V or less → 11 to 14 V

K17-21 (SUP) - K17-23 (GND)

B - W-B

Power source (ACC)

20 seconds elapse after turning the engine switch on (ACC)

11 to 14 V

K17-22 (RST)*2

R

-

-

-

K17-23 (GND) - Body ground

W-B - Body ground

Ground

Always

Below 1 Ω

K137-1 (USB4+)*1

-

USB communication line

-

-

K137-2 (USB4-)*1

-

USB communication line

-

-

K137-3 (UGD4) - Body ground*1

Shielded - Body ground

Shield ground

Always

Below 1 Ω

r1-1 (GVO-)

-

Video signal (Digital)

-

-

r1-2 (GVO+)

-

Video signal (Digital)

-

-

r1-3 (GVG1) - Body ground

Shielded - Body ground

Shield ground

Always

Below 1 Ω

r1-4 (US4+)

-

USB communication line

-

-

r1-5 (US4-)

-

USB communication line

-

-

r1-6 (UGD4) - Body ground

Shielded - Body ground

Shield ground

Always

Below 1 Ω

  • *1: w/ Manual (SOS) Switch
  • *2: It is connected, but not used

STEREO COMPONENT AMPLIFIER ASSEMBLY

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

K14-1 (+B) - K14-3 (GND)

L - W-B

Power source (+B)

Always

11 to 14 V

K14-3 (GND) - Body ground

W-B - Body ground

Ground

Always

Below 1 V

K14-8 (WF2+) - K14-3 (GND)

W - W-B

Sound signal (Woofer)

Audio system playing

A waveform synchronized with sound signals is output

K14-9 (RL+) - K14-3 (GND)

B - W-B

Sound signal (Rear Left)

Audio system playing

A waveform synchronized with sound signals is output

K14-10 (WF1+) - K14-3 (GND)

BE - W-B

Sound signal (Woofer)

Audio system playing

A waveform synchronized with sound signals is output

K14-11 (RR+) - K14-3 (GND)

R - W-B

Sound signal (Rear Right)

Audio system playing

A waveform synchronized with sound signals is output

K14-12 (TWL+) - K14-3 (GND)

B - W-B

Sound signal (Front Left)

Audio system playing

A waveform synchronized with sound signals is output

K14-13 (FL+) - K14-3 (GND)

LG - W-B

Sound signal (Front Left)

Audio system playing

A waveform synchronized with sound signals is output

K14-14 (TWR+) - K14-3 (GND)

W - W-B*1

BE - W-B*2

Sound signal (Front Right)

Audio system playing

A waveform synchronized with sound signals is output

K14-15 (FR+) - K14-3 (GND)

BE - W-B

Sound signal (Front Right)

Audio system playing

A waveform synchronized with sound signals is output

K14-16 (+B2) - K14-3 (GND)

B - W-B

Power source (+B)

Always

11 to 14 V

K14-18 (GND2) - Body ground

W-B - Body ground

Ground

Always

Below 1 V

K14-23 (WF2-) - K14-3 (GND)

R - W-B

Sound signal (Woofer)

Audio system playing

A waveform synchronized with sound signals is output

K14-24 (RL-) - K14-3 (GND)

LG - W-B

Sound signal (Rear Left)

Audio system playing

A waveform synchronized with sound signals is output

K14-25 (WF1-) - K14-3 (GND)

L - W-B

Sound signal (Woofer)

Audio system playing

A waveform synchronized with sound signals is output

K14-26 (RR-) - K14-3 (GND)

W - W-B

Sound signal (Rear Right)

Audio system playing

A waveform synchronized with sound signals is output

K14-27 (TWL-) - K14-3 (GND)

GR - W-B

Sound signal (Front Left)

Audio system playing

A waveform synchronized with sound signals is output

K14-28 (FL-) - K14-3 (GND)

W - W-B

Sound signal (Front Left)

Audio system playing

A waveform synchronized with sound signals is output

K14-29 (TWR-) - K14-3 (GND)

B - W-B*1

L - W-B*2

Sound signal (Front Right)

Audio system playing

A waveform synchronized with sound signals is output

K14-30 (FR-) - K14-3 (GND)

L - W-B

Sound signal (Front Right)

Audio system playing

A waveform synchronized with sound signals is output

K10-1 (MUTE) - K14-3 (GND)

BE - W-B

Mute signal

Engine switch on (ACC)

Audio system playing

2.0 V or higher

Audio system changing modes

Below 1 V

K10-2 (L-) - K14-3 (GND)

G - W-B

Sound signal (Left)

Audio system playing

A waveform synchronized with sound signals is output

K10-3 (L+) - K14-3 (GND)

B - W-B

Sound signal (Left)

Audio system playing

A waveform synchronized with sound signals is output

K10-4 (R-) - K14-3 (GND)

R - W-B

Sound signal (Right)

Audio system playing

A waveform synchronized with sound signals is output

K10-5 (R+) - K14-3 (GND)

W - W-B

Sound signal (Right)

Audio system playing

A waveform synchronized with sound signals is output

K10-6 (SLD) - Body ground

Shield - Body ground

Shield ground

Always

Below 1 V

K10-7 (TX-)

W

AVC-LAN communication signal

-

-

K10-8 (TX+)

B

AVC-LAN communication signal

-

-

K10-11 (SPD) - K14-3 (GND)

G - W-B

Vehicle speed signal

Engine switch on (IG)

Wheel being rotated

Pulse generation

K10-12 (ACC) - K14-3 (GND)

LG - W-B

Power source (ACC)

Engine switch off

Below 1 V

Engine switch on (ACC)

11 to 14 V

K10-14 (II1-) - K14-3 (GND)

BR - W-B

Voice signal

Voice guidance sounding

A waveform synchronized with voice signals is output

K10-15 (II1+) - K14-3 (GND)

Y - W-B

Voice signal

Voice guidance sounding

A waveform synchronized with voice signals is output

K10-18 (SLD1) - Body ground

Shield - Body ground

Shield ground

Always

Below 1 V

K10-24 (TMUT) - Body ground*1

BE - Body ground

Mute signal

Engine switch on (ACC)

Audio system playing

2.0 V or higher

Emergency call mode

Below 1 V

  • *1: w/ Manual (SOS) Switch
  • *2: w/o Manual (SOS) Switch

DCM (TELEMATICS TRANSCEIVER) (w/ Manual (SOS) Switch)

Click here

COMBINATION METER ASSEMBLY

Click here

HEADUP DISPLAY (METER MIRROR SUB-ASSEMBLY) (w/ Headup Display System)

Click here

SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY)

Click here

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