Toyota Venza: Terminals Of Ecu
TERMINALS OF ECU
1. CHECK MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK ASSEMBLY)
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(a) Disconnect the 2A and 2F main body ECU (driver side junction block assembly) connectors.
(b) Measure the voltage and resistance according to the value(s) in the table below.
Standard Voltage|
Symbols |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
|---|---|---|---|---|
|
2A-1 - Body ground |
B - Body ground |
Battery power supply |
Always |
11 to 14 V |
|
Symbols |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
|---|---|---|---|---|
|
2F-16 - 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 2A and 2F main body ECU (driver side junction block assembly) connectors.
(d) Measure the voltage and check for pulses according to the value(s) in the table below.
Standard Voltage|
Symbols |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
|---|---|---|---|---|
|
2F-5 (LSR) - Body ground |
Y - Body ground |
Rear door unlock detection switch LH or RH input |
Rear door LH and RH locked |
Pulse generation |
|
Rear door LH or RH unlocked |
Below 1 V |
|||
|
2K-9 (ILE)*1 - Body ground |
R - Body ground |
Transponder key amplifier illumination drive output |
Illumination on |
Below 1 V |
|
Illumination off |
11 to 14 V |
|||
|
2O-5 (LSR) - Body ground |
BR - Body ground |
Rear door unlock detection switch LH or RH input |
Rear door LH and RH locked |
Pulse generation |
|
Rear door LH or RH unlocked |
Below 1 V |
|||
|
2O-19 (LCTY) - Body ground |
R - Body ground |
Rear door courtesy light switch LH input |
Rear door LH open |
Below 1 V |
|
Rear door LH closed |
Pulse generation |
|||
|
2R-5 (ILE) - Body ground |
P - Body ground |
Interior lights drive output |
Interior lights on |
Below 1 V |
|
Interior lights off |
11 to 14 V |
|||
|
2R-7 (DOMR) - Body ground |
W - Body ground |
DOME CUT relay drive output |
DOME CUT relay off |
Below 1 V |
|
DOME CUT relay on |
11 to 14 V |
|||
|
D49-7 (RCTY) - Body ground |
GR - Body ground |
Rear door courtesy light switch RH input |
Rear door RH open |
Below 1 V |
|
Rear door RH closed |
Pulse generation |
|||
|
D49-21 (PCTY) - Body ground |
V - Body ground |
Front passenger side door courtesy light switch input |
Front passenger side door open |
Below 1 V |
|
Front passenger side door closed |
Pulse generation |
|||
|
D49-25 (BCTY) - Body ground |
GR - Body ground |
Back door courtesy switch input |
Back door open |
Below 1 V |
|
Back door closed |
Pulse generation |
|||
|
D49-27 (LSWP) - Body ground |
P - Body ground |
Front passenger side door unlock detection switch input |
Front passenger side door locked |
Pulse generation |
|
Front passenger side door unlocked |
Below 1 V |
|||
|
D50-9 (LSWD) - Body ground |
P - Body ground |
Driver side door unlock detection switch input |
Driver side door locked |
Pulse generation |
|
Driver side door unlocked |
Below 1 V |
|||
|
D50-24 (DCTY) - Body ground |
V - Body ground |
Driver side door courtesy light switch input |
Driver side door open |
Below 1 V |
|
Driver side door closed |
Pulse generation |
If the result is not as specified, the main body ECU (driver side junction block assembly) may have a malfunction.
- *1: w/o Smart Key System
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