TERMINALS OF ECU
1. CHECK DRIVER SIDE JUNCTION BLOCK ASSEMBLY AND MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)
(a) Remove the main body ECU (multiplex network body ECU) (See page ).
(b) Measure the voltage and resistance according to the value(s) in the table below.
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
---|---|---|---|---|
A-30 (BECU) - Body ground |
- |
Auxiliary battery power supply |
Always |
11 to 14 V |
A-31 (ALTB) - Body ground |
- |
Auxiliary battery power supply |
Always |
11 to 14 V |
A-32 (IG) - Body ground |
- |
Ignition switch power supply |
Ignition switch ON |
11 to 14 V |
A-32 (IG) - Body ground |
- |
Ignition switch power supply |
Ignition switch off |
Below 1 V |
A-29 (ACC) - Body ground |
- |
ACC power supply |
Ignition switch ACC |
11 to 14 V |
A-29 (ACC) - Body ground |
- |
ACC power supply |
Ignition switch off |
Below 1 V |
A-11 (GND1) - Body ground |
- |
Ground |
Always |
Below 1 Ω |
F10-3 (GND2) - Body ground |
W-B - Body ground |
Ground |
Always |
Below 1 Ω |
If the result is not as specified, there may be a malfunction in the wire harness.
(c) Install the main body ECU (multiplex network body ECU) (See page ).
(d) Measure the voltage according to the value(s) in the table below.
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
---|---|---|---|---|
2F-27 (FLCY) - Body ground |
R - Body ground |
Front door LH courtesy switch input |
Front door LH open |
Below 1 V |
2F-27 (FLCY) - Body ground |
R - Body ground |
Front door LH courtesy switch input |
Front door LH closed |
11 to 14 V |
2B-15 (FRCY) - Body ground |
B - Body ground |
Front door RH courtesy switch input |
Front door RH open |
Below 1 V |
2B-15 (FRCY) - Body ground |
B - Body ground |
Front door RH courtesy switch input |
Front door RH closed |
11 to 14 V |
F8-3 (LCTY) - Body ground |
V - Body ground |
Rear door LH courtesy light switch input |
Rear door LH open |
Below 1 V |
F8-3 (LCTY) - Body ground |
V - Body ground |
Rear door LH courtesy light switch input |
Rear door LH closed |
11 to 14 V |
F10-27 (RCTY) - Body ground |
R - Body ground |
Rear door RH courtesy light switch input |
Rear door RH open |
Below 1 V |
F10-27 (RCTY) - Body ground |
R - Body ground |
Rear door RH courtesy light switch input |
Rear door RH closed |
11 to 14 V |
F9-11 (L2) - Body ground |
LG - Body ground |
Driver side door key-linked lock input |
Driver side door key cylinder lock position |
Below 1 V |
F9-11 (L2) - Body ground |
LG - Body ground |
Driver side door key-linked lock input |
Ignition switch off, all doors closed and driver side door key cylinder neutral position |
Pulse generation (see waveform 1 or 2) |
F9-24 (UL3) - Body ground |
GR - Body ground |
Driver side door key-linked unlock input |
Driver side door key cylinder unlock position |
Below 1 V |
F9-24 (UL3) - Body ground |
GR - Body ground |
Driver side door key-linked unlock input |
Ignition switch off, all doors closed and driver side door key cylinder neutral position |
Pulse generation (see waveform 3 or 4) |
F9-7 (LSFL) - Body ground |
G - Body ground |
Front door LH lock position switch input |
Front door LH unlocked |
Below 1 V |
F9-7 (LSFL) - Body ground |
G - Body ground |
Front door LH lock position switch input |
Ignition switch off, all doors closed and front door LH locked |
Pulse generation (see waveform 5 or 6) |
F9-18 (LSFR) - Body ground |
G - Body ground |
Front door RH lock position switch input |
Front door RH unlocked |
Below 1 V |
F9-18 (LSFR) - Body ground |
G - Body ground |
Front door RH lock position switch input |
Ignition switch off, all doors closed and front door RH locked |
Pulse generation (see waveform 7 or 8) |
2F-25 (LSWL) - Body ground |
V - Body ground |
Rear door LH lock position switch input |
Rear door LH unlocked |
Below 1 V |
2F-25 (LSWL) - Body ground |
V - Body ground |
Rear door LH lock position switch input |
Ignition switch off, all doors closed and rear door LH locked |
Pulse generation (see waveform 9 or 10) |
F10-2 (LSWR) - Body ground |
V - Body ground |
Rear door RH lock position switch input |
Rear door RH unlocked |
Below 1 V |
F10-2 (LSWR) - Body ground |
V - Body ground |
Rear door RH lock position switch input |
Ignition switch off, all doors closed and rear door RH locked |
Pulse generation (see waveform 11 or 12) |
2B-34 (IND) - Body ground |
L - Body ground |
Security indicator light signal |
Security indicator light illuminates (illuminates only for 30 (+/-5) seconds in alarm sounding state (blinks when system in armed state)) |
3 to 6 V |
2D-23 (HCTY) - Body ground |
B - Body ground |
Security courtesy switch input |
Engine hood open |
Below 1 V |
2D-23 (HCTY) - Body ground |
B - Body ground |
Security courtesy switch input |
Engine hood closed |
Pulse generation (see waveform 13 or 14) |
2D-29 (HORN) - Body ground |
GR-L - Body ground |
Vehicle horn(s) signal |
Vehicle horn(s) sounding (theft warning system in alarm sounding state) |
Pulse generation |
2D-29 (HORN) - Body ground |
GR-L - Body ground |
Vehicle horn(s) signal |
Vehicle horn(s) not sounding (theft warning system in armed state) |
11 to 14 V |
2D-25 (SH) - Body ground |
R - Body ground |
Security horn signal |
Security horn sounding (theft warning system in alarm sounding state) |
Pulse generation |
2D-25 (SH) - Body ground |
R - Body ground |
Security horn signal |
Security horn not sounding (theft warning system in armed state) |
11 to 14 V |
If the result is not as specified, the main body ECU (multiplex network body ECU) or driver side junction block assembly may have a malfunction.
(e) Using an oscilloscope, check waveform 1.
Waveform 1 (Reference)
Item |
Content |
---|---|
Terminal No. (Symbol) |
F9-11 (L2) - Body ground |
Tool Setting |
5 V/DIV., 20 ms/DIV. |
Condition |
Ignition switch off, all doors closed and driver side door key cylinder neutral position |
(f) Using an oscilloscope, check waveform 2.
Waveform 2 (Reference)
Item |
Content |
---|---|
Terminal No. (Symbol) |
F9-11 (L2) - Body ground |
Tool Setting |
5 V/DIV., 20 ms/DIV. |
Condition |
Ignition switch off, all doors closed and driver side door key cylinder neutral position |
(g) Using an oscilloscope, check waveform 3.
Waveform 3 (Reference)
Item |
Content |
---|---|
Terminal No. (Symbol) |
F9-24 (UL3) - Body ground |
Tool Setting |
5 V/DIV., 20 ms/DIV. |
Condition |
Ignition switch off, all doors closed and driver side door key cylinder neutral position |
(h) Using an oscilloscope, check waveform 4.
Waveform 4 (Reference)
Item |
Content |
---|---|
Terminal No. (Symbol) |
F9-24 (UL3) - Body ground |
Tool Setting |
5 V/DIV., 20 ms/DIV. |
Condition |
Ignition switch off, all doors closed and driver side door key cylinder neutral position |
(i) Using an oscilloscope, check waveform 5.
Waveform 5 (Reference)
Item |
Content |
---|---|
Terminal No. (Symbol) |
F9-7 (LSFL) - Body ground |
Tool Setting |
5 V/DIV., 20 ms/DIV. |
Condition |
Ignition switch off, all doors closed and front door LH locked |
(j) Using an oscilloscope, check waveform 6.
Waveform 6 (Reference)
Item |
Content |
---|---|
Terminal No. (Symbol) |
F9-7 (LSFL) - Body ground |
Tool Setting |
5 V/DIV., 20 ms/DIV. |
Condition |
Ignition switch off, all doors closed and front door LH locked |
(k) Using an oscilloscope, check waveform 7.
Waveform 7 (Reference)
Item |
Content |
---|---|
Terminal No. (Symbol) |
F9-18 (LSFR) - Body ground |
Tool Setting |
5 V/DIV., 20 ms/DIV. |
Condition |
Ignition switch off, all doors closed and front door RH locked |
(l) Using an oscilloscope, check waveform 8.
Waveform 8 (Reference)
Item |
Content |
---|---|
Terminal No. (Symbol) |
F9-18 (LSFR) - Body ground |
Tool Setting |
5 V/DIV., 20 ms/DIV. |
Condition |
Ignition switch off, all doors closed and front door RH locked |
(m) Using an oscilloscope, check waveform 9.
Waveform 9 (Reference)
Item |
Content |
---|---|
Terminal No. (Symbol) |
2F-25 (LSWL) - Body ground |
Tool Setting |
5 V/DIV., 20 ms/DIV. |
Condition |
Ignition switch off, all doors closed and rear door LH locked |
(n) Using an oscilloscope, check waveform 10.
Waveform 10 (Reference)
Item |
Content |
---|---|
Terminal No. (Symbol) |
2F-25 (LSWL) - Body ground |
Tool Setting |
5 V/DIV., 20 ms/DIV. |
Condition |
Ignition switch off, all doors closed and rear door LH locked |
(o) Using an oscilloscope, check waveform 11.
Waveform 11 (Reference)
Item |
Content |
---|---|
Terminal No. (Symbol) |
F10-2 (LSWR) - Body ground |
Tool Setting |
5 V/DIV., 20 ms/DIV. |
Condition |
Ignition switch off, all doors closed and rear door RH locked |
(p) Using an oscilloscope, check waveform 12.
Waveform 12 (Reference)
Item |
Content |
---|---|
Terminal No. (Symbol) |
F10-2 (LSWR) - Body ground |
Tool Setting |
5 V/DIV., 20 ms/DIV. |
Condition |
Ignition switch off, all doors closed and rear door RH locked |
(q) Using an oscilloscope, check waveform 13.
Waveform 13 (Reference)
Item |
Content |
---|---|
Terminal No. (Symbol) |
2D-23 (HCTY) - Body ground |
Tool Setting |
5 V/DIV., 20 ms/DIV. |
Condition |
Ignition switch off, all doors closed and engine hood closed |
(r) Using an oscilloscope, check waveform 14.
Waveform 14 (Reference)
Item |
Content |
---|---|
Terminal No. (Symbol) |
2D-23 (HCTY) - Body ground |
Tool Setting |
5 V/DIV., 20 ms/DIV. |
Condition |
Ignition switch off, all doors closed and engine hood closed |
2. CHECK MULTIPLEX NETWORK DOOR ECU (BACK DOOR P/W)
(a) Disconnect the V2 multiplex network door ECU (back door P/W) connector.
(b) Measure the voltage and resistance according to the value(s) in the table below.
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
---|---|---|---|---|
V2-1 (BDR) - Body ground |
B - Body ground |
Battery power supply |
Always |
11 to 14 V |
V2-7 (BECU) - Body ground |
L - Body ground |
Battery power supply |
Always |
11 to 14 V |
V2-8 (SIG) - Body ground |
G - Body ground |
Ignition switch power supply |
Ignition switch ON |
11 to 14 V |
V2-8 (SIG) - Body ground |
G - Body ground |
Ignition switch power supply |
Ignition switch off |
Below 1 V |
V2-6 (GND) - Body ground |
W-B - Body ground |
Ground |
Always |
Below 1 Ω |
If the result is not as specified, there may be a malfunction in the wire harness.
(c) Reconnect the V2 multiplex network door ECU (back door P/W) connector.
(d) Measure the voltage and resistance according to the value(s) in the table below.
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
---|---|---|---|---|
W10-10 (BDCY) - W10-18 (CTYE) |
P - G |
Back door courtesy switch input |
Back door closed |
Pulse generation (see waveform 1 or 2) |
W10-10 (BDCY) - W10-18 (CTYE) |
P - G |
Back door courtesy switch input |
Back door open |
Below 1 V |
W10-16 (BKL) - W10-8 (KEYE)* |
P - V |
Tail gate control switch lock input |
Back door lock key cylinder neutral position |
Pulse generation (see waveform 3 or 4) |
W10-16 (BKL) - W10-8 (KEYE)* |
P - V |
Tail gate control switch lock input |
Back door lock key cylinder is turned lock |
Below 1 V |
W10-15 (BKUL) - W10-8 (KEYE)* |
R - V |
Tail gate control switch unlock input |
Back door lock key cylinder neutral position |
Pulse generation (see waveform 3 or 4) |
W10-15 (BKUL) - W10-8 (KEYE)* |
R - V |
Tail gate control switch unlock input |
Back door lock key cylinder is turned unlock |
Below 1 V |
If the result is not as specified, the multiplex network door ECU (back door P/W) may have a malfunction.
(e) Using an oscilloscope, check waveform 1.
Waveform 1 (Reference)
Item |
Content |
---|---|
Terminal No. (Symbol) |
W10-10 (BDCY) - W10-18 (CTYE) |
Tool Setting |
5 V/DIV., 10 ms/DIV. |
Condition |
Back door closed |
(f) Using an oscilloscope, check waveform 2.
Waveform 2 (Reference)
Item |
Content |
---|---|
Terminal No. (Symbol) |
W10-10 (BDCY) - W10-18 (CTYE) |
Tool Setting |
5 V/DIV., 10 ms/DIV. |
Condition |
Back door closed |
(g) Using an oscilloscope, check waveform 3.
Waveform 3 (Reference)
Item |
Content |
---|---|
Terminal No. (Symbol) |
|
Tool Setting |
5 V/DIV., 10 ms/DIV. |
Condition |
Back door lock key cylinder neutral position |
(h) Using an oscilloscope, check waveform 4.
Waveform 4 (Reference)
Item |
Content |
---|---|
Terminal No. (Symbol) |
|
Tool Setting |
5 V/DIV., 10 ms/DIV. |
Condition |
Back door lock key cylinder neutral position |
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Ejecting a CD (type A and B) Press
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Ejecting a CD (type C) To
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The selected CD number is shown
on the display.
Press and remove the CD.
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DTC Code
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