Last Modified: 04-05-2023 6.11:8.1.0 Doc ID: RM1000000018IX9
Model Year Start: 2018 Model: Sienna Prod Date Range: [11/2017 - 08/2018]
Title: CELLULAR COMMUNICATION: SAFETY CONNECT SYSTEM: TERMINALS OF ECU; 2018 MY Sienna [11/2017 - 08/2018]

TERMINALS OF ECU

1. 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)

-

-

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

D73-1 (+B) - D73-4 (E)

SB - BR

Vehicle battery power supply

Always

11 to 14 V

D73-2 (SPI+) - D73-4 (E)

L - BR*1

W - BR*2

Sound signal

Audio system is playing

A waveform synchronized with sound is input

D73-3 (SPI-) - D73-4 (E)

LG - BR*1

R - BR*2

Sound signal

Audio system is playing

A waveform synchronized with sound is input

D73-4 (E) - Body ground

BR - Body ground

Ground

Always

Below 1 V

D73-5 (SPO+) - D73-4 (E)

L - BR

Sound signal

Audio system is playing, or Emergency call mode

A waveform synchronized with sound is output

D73-6 (SPO-) - D73-4 (E)

LG - BR

Sound signal

Audio system is playing, or Emergency call mode

A waveform synchronized with sound is output

D73-7 (IG2) - D73-4 (E)

Y - BR

IG power supply

Ignition switch ON

11 to 14 V

Ignition switch off

Below 1 V

D73-8 (ACC) - D73-4 (E)

GR - BR

ACC power supply

Ignition switch ACC

11 to 14 V

Ignition switch off

Below 1 V

D73-10 (SPDP) - D73-4 (E)

V - BR

Vehicle speed signal

See "Vehicle Signal Check Mode" (See page 2018 - 2020 MY Sienna [11/2017 -        ]; NAVIGATION / MULTI INFO DISPLAY: NAVIGATION SYSTEM: OPERATION CHECK )

-

D73-11 (IND1) - D73-4 (E)

P - BR

Manual (SOS) switch red indicator illumination signal

For 2 seconds after turning the ignition switch ON

1 to 8.5 V

Ignition switch off

Below 1 V

D73-12 (IND2) - D73-4 (E)

W - BR

Manual (SOS) switch green indicator illumination signal

For 2 seconds after turning the ignition switch ON

1 to 8.5 V

Ignition switch off

Below 1 V

D73-15 (CANP)

LG

CAN communication signal

-

-

D73-16 (CANN)

W

CAN communication signal

-

-

D73-17 (MUTE) - D73-4 (E)*2

R - BR

Mute signal

Audio system is playing

3.5 V or higher

Emergency call mode

Below 1 V

D73-18 (MCO+) - D73-4(E)

B - BR

Sent microphone voice signal

See "Microphone & Voice Recognition Check" (See page 2018 - 2020 MY Sienna [11/2017 -        ]; NAVIGATION / MULTI INFO DISPLAY: NAVIGATION SYSTEM: OPERATION CHECK )

-

D73-19 (MCO-) - D73-4(E)

W - BR

Sent microphone voice signal

See "Microphone & Voice Recognition Check" (See page 2018 - 2020 MY Sienna [11/2017 -        ]; NAVIGATION / MULTI INFO DISPLAY: NAVIGATION SYSTEM: OPERATION CHECK )

-

D73-23 (ILL+) - D73-4 (E)

G - BR

Illumination signal

Light control switch off

Below 1 V

Light control switch tail or ON

11 to 14 V

D73-24 (GSW) - D73-4 (E)

B - BR

Collision detection line

Ignition switch ON

Pulse generation

(Refer to waveform 1)

D73-26 (SIG-) - D73-4 (E)

R - BR

Ground

Always

Below 1 V

D73-27 (SIG1) - D73-4 (E)

B - BR

Manual (SOS) switch condition signal

Manual (SOS) switch not pressed

1.4 to 1.8 V

Manual (SOS) switch pressed

0.5 to 0.9 V

D73-32 (SGND) - D73-4 (E)

Shield - BR

Shield ground

Always

Below 1 V

D73-33 (MCVD) - D73-4 (E)

R - BR

Telephone microphone assembly power supply

Ignition switch off

Below 1 V

Ignition switch ACC

4 to 6 V

D73-34 (MCI+) - D73-4 (E)

B - BR

Receive microphone voice signal

See "Microphone & Voice Recognition Check" (See page 2018 - 2020 MY Sienna [11/2017 -        ]; NAVIGATION / MULTI INFO DISPLAY: NAVIGATION SYSTEM: OPERATION CHECK )

-

D73-35 (MCI-) - D73-4 (E)

W - BR

Receive microphone voice signal

See "Microphone & Voice Recognition Check" (See page 2018 - 2020 MY Sienna [11/2017 -        ]; NAVIGATION / MULTI INFO DISPLAY: NAVIGATION SYSTEM: OPERATION CHECK )

-

  • *1: 10 Speaker
  • *2: 6 Speaker

(a) Oscilloscope waveform:

(1) Waveform 1

Item

Condition

Tester Connection

D73-24 (GSW) - D73-4 (E)

Tool setting

5.0 V/DIV., 20 ms/DIV.

Vehicle condition

Ignition switch ON