TERMINALS OF ECU
1. CHECK DRIVER SIDE JUNCTION BLOCK ASSEMBLY, MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)
(a) Remove the main 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-29 (ACC) - Body ground |
- |
ACC power supply |
Ignition switch ACC |
11 to 14 V |
A-30 (BECU) - Body ground |
- |
Battery power supply |
Always |
11 to 14 V |
A-32 (IG) - Body ground |
- |
Ignition power supply |
Ignition switch ON |
11 to 14 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 on the wire harness side.
(c) Install the main 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 |
---|---|---|---|---|
F8-3 (LCTY) - 2B-4 (GND1) |
V - W-B |
Rear door courtesy light switch LH signal |
Rear door LH open |
Below 1 V |
Rear door LH closed |
11 to 14 V |
|||
F9-2 (DOMR) - 2B-4 (GND1) |
V - W-B |
DOME relay drive output |
Battery saving control not operating |
11 to 14 V |
Battery saving control operating |
Below 1 V |
|||
F10-27 (RCTY) - 2B-4 (GND1) |
R - W-B |
Rear door courtesy light switch RH signal |
Rear door RH open |
Below 1 V |
Rear door RH closed |
11 to 14 V |
|||
F10-4 (MILE) - 2B-4 (GND1)*1 |
W - W-B |
Door mirror foot light signal output |
Door mirror foot light on |
11 to 14 V |
Door mirror foot light off |
Below 1 V |
|||
2B-18 (ILE) - 2B-4 (GND1) |
G - W-B |
Interior light signal |
Interior light on |
Below 1 V |
Interior light off |
11 to 14 V |
|||
2B-15 (FRCY) - 2B-4 (GND1) |
B - W-B |
Front door courtesy light switch RH signal |
Front door RH open |
Below 1 V |
Front door RH closed |
11 to 14 V |
|||
2B-36 (FSPT) - 2B-4 (GND1)*2, *3 |
SB - W-B |
Front door inside handle illumination, rear door inside handle illumination RH and interior foot light signal |
Front door inside handle illumination and interior foot light on |
Below 1 V |
Front door inside handle illumination and interior foot light off |
11 to 14 V |
|||
2F-27 (FLCY) - 2B-4 (GND1) |
R - W-B |
Front door courtesy light switch LH signal |
Front door LH open |
Below 1 V |
Front door LH closed |
11 to 14 V |
|||
2F-36 (FSPT) - 2B-4 (GND1)*2 |
SB - W-B |
Rear door inside handle illumination LH signal |
Rear door inside handle illumination on |
Below 1 V |
Rear door inside handle illumination off |
11 to 14 V |
If the result is not as specified, the main body ECU may have a malfunction.
2. CHECK MULTIPLEX NETWORK DOOR ECU
(a) Disconnect the V2 and W10 multiplex network door ECU connectors.
(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 |
---|---|---|---|---|
V2-17 (B1) - Body ground |
R - Body ground |
Battery power supply |
Always |
11 to 14 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 on the wire harness side.
(c) Reconnect the V2 and W10 multiplex network door ECU connectors.
(d) Measure the voltage 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 light switch signal |
Back door open |
Below 1 V |
Back door closed |
Pulse generation (See waveform 1 or 2) |
|||
W10-22 (LGLP) - V2-6 (GND) |
L - W-B |
Spot light LH signal |
Spot light LH on |
Pulse generation (See waveform 3) |
Spot light LH off |
Pulse generation (See waveform 4) |
|||
W10-23 (LGP2) - V2-6 (GND) |
L - W-B |
Spot light RH signal |
Spot light RH on |
Pulse generation (See waveform 3) |
Spot light RH off |
Pulse generation (See waveform 4) |
|||
W10-25 (B2) - V2-6 (GND) |
R - W-B |
Battery power supply |
Always |
11 to 14 V |
W10-26 (B3) - V2-6 (GND) |
R - W-B |
Battery power supply |
Always |
11 to 14 V |
(1) Waveform 1
Item |
Content |
---|---|
Terminal No. (Symbol) |
W10-10 (BDCY) - W10-18 (CTYE) |
Tool setting |
5 V/DIV., 10 ms/DIV. |
Condition |
Back door closed |
(2) Waveform 2
Item |
Content |
---|---|
Terminal No. (Symbol) |
W10-10 (BDCY) - W10-18 (CTYE) |
Tool setting |
5 V/DIV., 10 ms/DIV. |
Condition |
Back door closed |
(3) Waveform 3
Item |
Content |
---|---|
Terminal No. (Symbol) |
W10-22 (LGLP) - V2-6 (GND) W10-23 (LGP2) - V2-6 (GND) |
Tool setting |
5 V/DIV., 200 ms/DIV. |
Condition |
|
(4) Waveform 4
Item |
Content |
---|---|
Terminal No. (Symbol) |
W10-22 (LGLP) - V2-6 (GND) W10-23 (LGP2) - V2-6 (GND) |
Tool setting |
5 V/DIV., 200 ms/DIV. |
Condition |
|
Power Source Mode does not Change to ON (IG and ACC)
DESCRIPTION
When the engine switch is pushed with the key in the cabin, the power management
control receives signals to switch the power source mode.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
When using the Techstream with the engine swi ...
Tire Pressure Warning Ecu
Components
COMPONENTS
ILLUSTRATION
Installation
INSTALLATION
PROCEDURE
1. INSTALL TIRE PRESSURE WARNING ECU
(a) Install the tire pressure warning ECU with the bolt.
Torque:
5.5 N·m {56 kgf·cm, 49 in·lbf}
(b) Connect the connector.
2. INSTA ...