| Last Modified: 04-05-2023 | 6.11:8.1.0 | Doc ID: RM100000000VIPU |
| Model Year Start: 2016 | Model: Sienna | Prod Date Range: [12/2015 - ] |
| Title: MF1A (TRANSFER / 4WD / AWD): ACTIVE TORQUE CONTROL 4WD SYSTEM: TERMINALS OF ECU; 2016 - 2020 MY Sienna [12/2015 - ] | ||
TERMINALS OF ECU
1. CHECK 4WD CONTROL ECU
Text in Illustration
|
*a |
Component without harness connected (4WD Control ECU) |
- |
- |
(a) Measure the voltage, resistance and check for pulses of the connector.
|
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
|---|---|---|---|---|
|
K1-14 (CANH) - K1-16 (CANL) |
L - W |
CAN communication |
Ignition switch off |
54 to 69 Ω |
|
K1-23 (GND) - Body ground |
W-B - Body ground |
Ground |
Always |
Below 1 Ω |
|
K1-11 (IG1) - K1-23 (GND) |
GR - W-B |
Power source voltage |
Ignition switch ON |
11 to 14 V |
|
K1-13 (SLC+) - K1-32 (SLC-) |
W - B |
Electromagnetic solenoid signal |
D position, Idling |
Pulse generation (See waveform 1) |
|
K1-9 (BSLC) - K1-23 (GND) |
BE - W-B |
Power source voltage |
Always |
11 to 14 V |
If the result is not as specified, the 4WD control ECU may have a malfunction.
(b) Using an oscilloscope, check the waveform 1.
Waveform 1 (Reference)
|
Item |
Content |
|---|---|
|
Terminal No. (Symbol) |
SLC+ - SLC- |
|
Tester Range |
5 V/DIV., 1 msec./DIV. |
|
Condition |
D position, Idling |
|
|