TERMINALS OF ECU
1. CHECK DCM (TELEMATICS TRANSCEIVER)
Text in Illustration
*a |
Connector color: Blue (to Telephone antenna) |
*b |
Connector color: Gray (to GPS antenna) |
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
---|---|---|---|---|
F39-1 (+B) - F39-4 (E) |
P - W-B |
Vehicle battery power supply |
Always |
11 to 14 V |
F39-2 (SPI+) - F39-4 (E) |
V - W-B |
Sound signal |
Audio system playing |
Waveform synchronized with sound is input |
F39-3 (SPI-) - F39-4 (E) |
P - W-B |
Sound signal |
Audio system playing |
Waveform synchronized with sound is input |
F39-4 (E) - Body ground |
W-B - Body ground |
Ground |
Always |
Below 1 V |
F39-5 (SPO+) - F39-4 (E) |
LG - W-B |
Sound signal |
Audio system playing, or emergency call mode on |
Waveform synchronized with sound is output |
F39-6 (SPO-) - F39-4 (E) |
L - W-B |
Sound signal |
Audio system playing, or emergency call mode on |
Waveform synchronized with sound is output |
F39-7 (IG2) - F39-4 (E) |
W - W-B |
IG power supply |
Ignition switch ON |
11 to 14 V |
Ignition switch off |
Below 1 V |
|||
F39-8 (ACC) - F39-4 (E) |
P - W-B |
ACC power supply |
Ignition switch ACC |
11 to 14 V |
Ignition switch off |
Below 1 V |
|||
F39-10 (SPDP) - F39-4 (E) |
SB - W-B |
Vehicle speed signal |
See "Vehicle Signal Check Mode" (See page ) |
- |
F39-11 (IND1) - F39-4 (E) |
R - W-B |
Manual (SOS) switch red indicator illumination signal |
Illuminates for 2 seconds after turning the ignition switch ON |
1 to 8.5 V |
Ignition switch off |
Below 1 V |
|||
F39-12 (IND2) - F39-4 (E) |
V - W-B |
Manual (SOS) switch green indicator illumination signal |
Illuminates for 2 seconds after turning the ignition switch ON |
1 to 8.5 V |
Ignition switch off |
Below 1 V |
|||
F39-13 (BBI-) |
G |
BUB (Back-Up Battery) power supply |
- |
- |
F39-17 (MUTE) - F39-4 (E) |
L - W-B |
Mute signal |
Audio system playing |
3.5 V or higher |
Emergency call mode on |
Below 1 V |
|||
F39-18 (MCO+) - F39-4 (E) |
B - W-B |
Microphone voice signal |
See "Microphone & Voice Recognition Check" (See page ) |
- |
F39-19 (MCO-) - F39-4 (E) |
W - W-B |
Microphone voice signal |
See "Microphone & Voice Recognition Check" (See page ) |
- |
F39-20 (CTR1) |
L |
BUB (Back-Up Battery) control line |
- |
- |
F39-21 (CTR2) |
GR |
BUB (Back-Up Battery) control line |
- |
- |
F39-23 (ILL+) - F39-4 (E) |
G - W-B |
Illumination signal |
Light control switch off |
Below 1 V |
Light control switch tail or on |
11 to 14 V |
|||
F39-24 (GSW) - F39-4 (E) |
B - W-B |
Collision detection signal |
Ignition switch ON |
Pulse generation (See waveform 1) |
F39-25 (SIL) |
G |
Serial communication signal |
- |
- |
F39-26 (SIG-) - F39-4 (E) |
LG - W-B |
Ground |
Always |
Below 1 V |
F39-27 (SIG1) - F39-4 (E) |
P - W-B |
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 |
|||
F39-30 (BBI+) |
LG |
BUB (Back-Up Battery) power supply |
- |
- |
F39-32 (SGND) - F39-4 (E) |
Shielded - W-B |
Shield ground |
Always |
Below 1 V |
F39-33 (MCVD) - F39-4 (E) |
R - W-B |
Telephone microphone assembly power supply |
Ignition switch off |
Below 1 V |
Ignition switch ON |
4 to 6 V |
|||
F39-34 (MCI+) - F39-4 (E) |
B - W-B |
Microphone voice signal |
See "Microphone & Voice Recognition Check" (See page ) |
- |
F39-35 (MCI-) - F39-4 (E) |
W - W-B |
Microphone voice signal |
See "Microphone & Voice Recognition Check" (See page ) |
- |
(a) Oscilloscope waveform:
(1) Waveform 1
Item |
Condition |
---|---|
Tester connection |
F39-24 (GSW) - F39-4 (E) |
Tool setting |
5.0 V/DIV., 20 ms/DIV. |
Vehicle condition |
Ignition switch ON |
System Diagram
SYSTEM DIAGRAM
Communication Table
Sender
Receiver
Signal
Line
Main body ECU (Multiplex network body ECU)
Combination meter assembly
Front door courtesy light switch LH signa ...
Precaution
PRECAUTION
1. IGNITION SWITCH EXPRESSION
HINT:
The type of ignition switch used on this model differs according to the specifications
of the vehicle. The expressions listed in the table below are used in this section.
Expression
Ign ...