Last Modified: 11-20-2023 6.11:8.1.0 Doc ID: RM1000000012VLI
Model Year Start: 2018 Model: Camry Prod Date Range: [03/2017 - 06/2017]
Title: CELLULAR COMMUNICATION: SAFETY CONNECT SYSTEM: TERMINALS OF ECU; 2018 MY Camry [03/2017 - 06/2017]

TERMINALS OF ECU

CHECK DCM (TELEMATICS TRANSCEIVER)

*a

Connector Color: Natural (to Telephone Sub Antenna)

*b

Connector Color: Blue (to Telephone Main Antenna)

*c

Connector Color: Gray (to GPS Antenna)

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Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

K12-1 (+B) - K12-4 (E)

B - W-B

Battery power supply

Always

11 to 14 V

K12-2 (SPI+) - K12-4 (E)

LA-LG - W-B

Sound signal

Audio system playing

A waveform synchronized with sound is output

K12-3 (SPI-) - K12-4 (E)

LA-L - W-B

Sound signal

Audio system playing

A waveform synchronized with sound is output

K12-4 (E) - Body ground

W-B - Body ground

Ground

Always

Below 1 V

K12-5 (SPO+) - K12-4 (E)

LA-BE - W-B

Sound signal

Audio system playing, or Emergency call mode

A waveform synchronized with sound is output

K12-6 (SPO-) - K12-4 (E)

LA-R - W-B

Sound signal

Audio system playing, or Emergency call mode

A waveform synchronized with sound is output

K12-7 (IG2) - K12-4 (E)

LG - W-B

IG power supply

Engine switch on (IG)

11 to 14 V

Engine switch off

Below 1 V

K12-8 (ACC) - K12-4 (E)

B - W-B

ACC power supply

Engine switch on (ACC)

11 to 14 V

Engine switch off

Below 1 V

K12-9 (SLED) - K12-4 (E)

SB - W-B

Manual (SOS) switch illumination power supply

Engine switch on (ACC)

11 to 14 V

Engine switch off

Below 1 V

K12-11 (IND1) - K12-4 (E)

P - W-B

Manual (SOS) switch red indicator illumination signal

For 2 seconds after turning the engine switch on (IG)

1 to 8.5 V

Engine switch off

Below 1 V

K12-12 (IND2) - K12-4 (E)

LG - W-B

Manual (SOS) switch green indicator illumination signal

For 2 seconds after turning the engine switch on (IG)

1 to 8.5 V

Engine switch off

Below 1 V

K12-15 (CANP)

R

CAN communication signal

-

-

K12-16 (CANN)

B

CAN communication signal

-

-

K12-17 (MUTE) - K12-4 (E)

BE - W-B

Mute signal

Audio system playing

3.5 V or higher

Emergency call mode

Below 1 V

K12-18 (MCO+) - K12-4 (E)

SB - W-B

Sent microphone voice signal

See "Check Microphone & Voice Recognition"

2018 MY Camry [03/2017 - 06/2017]; AUDIO / VIDEO: AUDIO AND VISUAL SYSTEM: OPERATION CHECK

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K12-19 (MCO-) - K12-4 (E)

V - W-B

Sent microphone voice signal

See "Check Microphone & Voice Recognition"

2018 MY Camry [03/2017 - 06/2017]; AUDIO / VIDEO: AUDIO AND VISUAL SYSTEM: OPERATION CHECK

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K12-24 (GSW) - K12-4 (E)

W - W-B

Collision detection signal

Engine switch on (IG)

Pulse generation

(Refer to waveform 1)

K12-26 (SIG-) - K12-4 (E)

GR - W-B

Ground

Always

Below 1 V

K12-27 (SIG1) - K12-4 (E)

B - W-B

Manual (SOS) switch condition signal

Manual (SOS) switch not pressed

1.5 to 2.0 V

Manual (SOS) switch pressed

0.5 to 0.8 V

K12-32 (SGND) - K12-4 (E)

Shield - W-B

Shield ground

Always

Below 1 V

K12-33 (MCVD) - K12-4 (E)

B - W-B

Telephone microphone assembly power supply

Engine switch off

Below 1 V

Engine switch on (ACC)

4 to 6 V

K12-34 (MCI+) - K12-4 (E)

W - W-B

Receive microphone voice signal

See "Check Microphone & Voice Recognition"

2018 MY Camry [03/2017 - 06/2017]; AUDIO / VIDEO: AUDIO AND VISUAL SYSTEM: OPERATION CHECK

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K12-35 (MCI-) - K12-4 (E)

R - W-B

Receive microphone voice signal

See "Check Microphone & Voice Recognition"

2018 MY Camry [03/2017 - 06/2017]; AUDIO / VIDEO: AUDIO AND VISUAL SYSTEM: OPERATION CHECK

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(a) Oscilloscope waveform:

(1) Waveform 1

Item

Condition

Tester connection

K12-24 (GSW) - K12-4 (E)

Tool setting

5.0 V/DIV., 20 ms/DIV.

Vehicle condition

Engine switch on (IG)

CHECK RADIO AND DISPLAY RECEIVER ASSEMBLY

Click here 2018 MY Camry [03/2017 - 06/2017]; AUDIO / VIDEO: AUDIO AND VISUAL SYSTEM: TERMINALS OF ECU