TELEMATICS SYSTEM TERMINALS OF ECU
Check from the rear of the connector while it is connected to the components.
TELEMATICS TRANSCEIVER
*a
Connector Color: Gray (to GNSS Antenna)
*b
Connector Color: Blue (to Telephone Antenna)
Terminal No. (Symbol)
Wiring Color
Terminal Description
Condition
Specified Condition
M38-1 (+B) - M38-4 (E)
B - W-B
Power source (+B)
Power switch off
11 to 14 V
M38-2 (SPI+) - M38-4 (E)
P - W-B
Sound signal
Audio system playing
A waveform synchronized with sound signals is output
M38-3 (SPI-) - M38-4 (E)
V - W-B
Sound signal
Audio system playing
A waveform synchronized with sound signals is output
M38-4 (E) - Body ground
W-B - Body ground
Ground
Always
Below 1 Ω
M38-5 (SPO+) - M38-4 (E)
LG - W-B
Sound signal
Audio system playing, or emergency call mode
A waveform synchronized with sound signals is output
M38-6 (SPO-) - M38-4 (E)
L - W-B
Sound signal
Audio system playing, or emergency call mode
A waveform synchronized with sound signals is output
M38-7 (IG2) - M38-4 (E)
SB - W-B
Power source (IG)
Power switch on (IG)
11 to 14 V
Power switch off
Below 1 V
M38-8 (ACC) - M38-4 (E)
W - W-B
Power source (ACC)
Power switch on (ACC)
11 to 14 V
Power switch off
Below 1 V
M38-9 (SLED) - M38-4 (E)
L - W-B
Manual (SOS) switch illumination power supply
Power switch on (ACC)
11 to 14 V
Power switch off
Below 1 V
M38-10 (SPDP) - M38-4 (E)
L - W-B
Vehicle speed signal
See "Vehicle Signal Check Mode" in Operation Check
w/o Navigation System:Click here
w/ Navigation System:Click here
-
M38-11 (IND1) - M38-4 (E)
P - W-B
Manual (SOS) switch indicator (red) illumination signal
For 10 seconds after power switch turned on (IG)
1 to 8.5 V
Power switch off
Below 1 V
M38-12 (IND2) - M38-4 (E)
SB - W-B
Manual (SOS) switch indicator (green) illumination signal
For 2 seconds after power switch turned on (IG) and the manual (SOS) switch indicator (red) has illuminated for 10 seconds
1 to 8.5 V
Power switch off
Below 1 V
M38-15 (CANP)
R
CAN communication signal
-
-
M38-16 (CANN)
W
CAN communication signal
-
-
M38-17 (MUTE) - M38-4 (E)
V - W-B
Mute signal
Audio system playing
3.5 to 5 V
Emergency call mode
Below 1 V
M38-18 (MCO+) - M38-4 (E)
W - W-B
Sent microphone voice signal
See "Microphone Check" in Operation Check
w/o Navigation System:Click here
w/ Navigation System:Click here
-
M38-19 (MCO-) - M38-4 (E)
R - W-B
Sent microphone voice signal
See "Microphone Check" in Operation Check
w/o Navigation System:Click here
w/ Navigation System:Click here
-
M38-23 (ILL+) - M38-4 (E)
G - W-B
Illumination signal
Light control switch off
Below 1 V
Light control switch in tail or head position
11 to 14 V
M38-24 (GSW) - M38-4 (E)
V - W-B
Collision detection signal
Power switch on (IG)
Pulse generation
(Refer to waveform 1)
M38-26 (SIG-) - M38-4 (E)
BE - W-B
Ground
Always
Below 1 Ω
M38-27 (SIG1) - M38-4 (E)
G - W-B
Manual (SOS) switch condition signal
Manual (SOS) switch not pressed
2.0 to 2.3 V
Manual (SOS) switch pressed
Below 1 V
M38-32 (SGND) - M38-4 (E)
Shielded - W-B
Shield ground
Always
Below 1 Ω
M38-33 (MCVD) - M38-4 (E)
B - W-B
Microphone power supply
Power switch off
Below 1 V
Power switch on (ACC)
4 to 6 V
M38-34 (MCI+) - M38-4 (E)
W - W-B
Receive microphone voice signal
See "Microphone Check" in Operation Check
w/o Navigation System:Click here
w/ Navigation System:Click here
-
M38-35 (MCI-) - M38-4 (E)
R - W-B
Receive microphone voice signal
See "Microphone Check" in Operation Check
w/o Navigation System:Click here
w/ Navigation System:Click here
-
-
Oscilloscope waveform:
Waveform 1
Item
Condition
Tester connection
M38-24 (GSW) - M38-4 (E)
Tool setting
5.0 V/DIV., 20 ms/DIV.
Vehicle condition
Power switch on (IG)
-
RADIO AND DISPLAY RECEIVER ASSEMBLY (for Radio and Display Type)
w/o Navigation System:Click here
w/ Navigation System:Click here