Toyota Camry owners & service manuals

Toyota Camry (XV70): 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)

LA-LG - BR*1

W - BR*2

Sound signal (Front right)*1

Sound signal (Right)*2

Audio system playing

A waveform synchronized with sound signals is output

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

LA-B - BR*1

B - BR*2

Sound signal (Front left)*1

Sound signal (Left)*2

Audio system playing

A waveform synchronized with sound signals is output

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

LA-G - BR*1

Y - BR*2

Sound signal (Rear left)*1

Voice signal*2

Audio system playing*1

Voice guidance sounding*2

A waveform synchronized with sound signals is output*1

A waveform synchronized with voice signals is output*2

K4-4 (RR+) - K3-1 (GND1)*1

LA-R - BR

Sound signal (Rear right)

Audio system playing

A waveform synchronized with sound signals is output

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

LA-L - BR*1

R - BR*2

Sound signal (Front right)*1

Sound signal (Right)*2

Audio system playing

A waveform synchronized with sound signals is output

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

LA-R - BR*1

G - BR*2

Sound signal (Front left)*1

Sound signal (Left)*2

Audio system playing

A waveform synchronized with sound signals is output

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

LA-GR - BR*1

BR - BR*2

Sound signal (Rear left)*1

Voice signal*2

Audio system playing

A waveform synchronized with sound signals is output

K4-9 (RR-) - K3-1 (GND1)*1

LA-G - BR

Sound signal (Rear right)

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*5

R - BR*8

Power source (+B)

Always

11 to 14 V

K3-5 (TX1+)*2

B

AVC-LAN communication signal

-

-

K3-6 (TX1-)*2

W

AVC-LAN communication signal

-

-

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

GR - BR

Power source (ACC)

Ignition switch off

Below 1 V

Ignition switch 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)*2

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

Click here

-

K2-3 (TMUT) - K3-1 (GND1)*3

BE - BR

Mute signal

Audio system playing

Above 2.0 V

Emergency call mode

Below 1 V

K2-5 (CNH1)*5

L

Local bus communication signal

-

-

K2-6 (CNL1)*5

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)

Ignition switch off

Below 1 V

Ignition switch ON

11 to 14 V

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

LG - BR*6

B - BR*7

Parking brake signal

See "Check Vehicle Signal" in Operation Check

Click here

-

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

SB - BR*3

W - BR*4

Microphone voice signal

See "Check Microphone" in Operation Check

Click here

-

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

V - BR*3

R - BR *4

Microphone voice signal

See "Check Microphone" in Operation Check

Click here

-

K2-23 (MACC) - K3-1 (GND1)*4

B - BR

Microphone power supply

Ignition switch off

Below 1 V

Ignition switch 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 (UGD1)

-

Ground

-

-

K135-5 (USG1)

-

Shield ground

-

-

K136-1 (USB4+)*3

-

Data signal

-

-

K136-2 (USB4-)*3

-

Data signal

-

-

K136-3 (UGD4)*3

-

Ground

-

-

K1-10 (USBV) - K1-11 (USBG)*3

L - GR

DCM (telephone microphone assembly) power supply

Ignition switch off

Below 1 V

Ignition switch ACC

4.75 to 5.25 V

K1-11 (USBG) - Body ground*3

GR

Ground

-

-

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

- - BR

Power source of antenna

Ignition switch ACC

Radio switch on and FM or AM selected

11 to 14 V

  • *1: for 6 Speakers
  • *2: for 9 Speakers
  • *3: w/ Manual (SOS) Switch
  • *4: w/o Manual (SOS) Switch
  • *5: for 9 Inch Display Type
  • *6: w/o Electric Parking Brake System
  • *7: w/ Electric Parking Brake System
  • *8: for 7 Inch Display Type

STEREO COMPONENT AMPLIFIER ASSEMBLY (for 9 Speakers)

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

Ignition switch 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

Ignition switch ON

Wheel being rotated

Pulse generation

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

P - W-B

Power source (ACC)

Ignition switch off

Below 1 V

Ignition switch 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

R - Body ground

Mute signal

Ignition switch 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) (w/ ELECTRIC PARKING BRAKE SYSTEM)

Click here

    READ NEXT:

     Dtc Check / Clear

    DTC CHECK / CLEAR CHECK DTC (CHECK USING TECHSTREAM) (a) Connect the Techstream to the DLC3. (b) Turn the ignition switch to ON and wait for 90 seconds. (c) Turn the Techstream on. (d) Enter the f

     Freeze Frame Data

    FREEZE FRAME DATA CHECK FREEZE FRAME DATA (a) Connect the Techstream to the DLC3. (b) Turn the ignition switch to ON. (c) Turn the Techstream on. (d) Enter the following menus: Body Electrical / N

     Diagnostic Trouble Code Chart

    DIAGNOSTIC TROUBLE CODE CHART Audio and Visual System DTC No. Detection Item Link B1324 Lost Communication with Meter B1325 Lost Communication with HUD

    SEE MORE:

     Wheel Speed Sensor Signal Compare Failure (C124E62)

    DESCRIPTION The skid control ECU (brake actuator assembly) measures the speed of each wheel by receiving signals from each speed sensor. These signals are used for recognizing that all four wheels are operating properly. Therefore, signals from all wheels must be equal. DTC No. Detection

     Illumination Circuit

    DESCRIPTION Power is supplied to the radio and display receiver assembly and steering pad switch assembly illumination when the light control switch is in the tail or head position. WIRING DIAGRAM CAUTION / NOTICE / HINT NOTICE: The vehicle is equipped with a Supplemental Restraint System (

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