| Last Modified: 11-29-2007 | 1.6 U | |
| Service Category: Vehicle Exterior | Section: Door/Hatch | |
| Model Year: 2008 | Model: Sequoia | Doc ID: RM00000274I005X |
| Title: DOOR / HATCH: BACK DOOR CLOSER SYSTEM: TERMINALS OF ECU (2008 Sequoia) | ||
TERMINALS OF ECU
1. CHECK POWER BACK DOOR DRIVE UNIT (POWER BACK DOOR ECU)
(a) Disconnect the O30 ECU 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 |
|---|---|---|---|---|
|
O30-12 (B) - Body ground |
L - Body ground |
Battery power supply |
Always |
11 to 14 V |
|
O30-10 (ECUB) - Body ground |
R - Body ground |
ECUB power supply |
Always |
11 to 14 V |
|
O30-8 (IG) - Body ground |
GR - Body ground |
IG power supply |
Ignition switch ON |
11 to 14 V |
|
O30-8 (IG) - Body ground |
GR - Body ground |
IG power supply |
Ignition switch off |
Below 1 V |
|
O30-11 (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 O30 ECU connector.
(d) Measure the voltage according to the value(s) in the table below.
|
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
|---|---|---|---|---|
|
O30-2 (DC+) - O30-1 (DC-) |
P - SB |
Back door lock motor circuit |
Back door lock motor is operating |
11 to 14 V |
|
O30-2 (DC+) - O30-1 (DC-) |
P - SB |
Back door lock motor circuit |
Back door lock motor is not operating |
Below 1 V |
|
O30-20 (FUL) - Body ground |
R - Body ground |
Back door courtesy switch circuit |
Back door is closed |
11 to 14 V |
|
O30-20 (FUL) - Body ground |
R - Body ground |
Back door courtesy switch circuit |
Back door is open |
Below 1 V |
|
O30-22 (HAF) - Body ground |
V - Body ground |
Back door lock half-latch switch signal circuit |
Back door is open → Back door closer motor operating → Back door is closed |
Below 1 V → 11 to 14 V → Below 1 V |
|
O30-24 (POS) - Body ground |
O - Body ground |
Back door lock position switch signal circuit |
Back door is open → Back door closer operating → Back door is closed |
Below 1 V → 11 to 14 V → Below 1 V |
If the result is not as specified, the ECU may have a malfunction.
2. CHECK MAIN BODY ECU (COWL SIDE JUNCTION BLOCK LH)
(a) Disconnect the DA and DD connectors.
(b) Measure the resistance and voltage according to the value(s) in the table below.
|
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
|---|---|---|---|---|
|
DA-1 (ALTB) - Body ground |
B - Body ground |
ALTB power supply |
Always |
11 to 14 V |
|
DD-62 (GND1,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.
3. CHECK BACK DOOR ECU
(a) Disconnect the V2 and V3 connectors.
(b) Measure the resistance and voltage according to the value(s) in the table below.
|
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
|---|---|---|---|---|
|
V2-1 (BDR) - Body ground |
SB - Body ground |
BDR power supply |
Always |
11 to 14 V |
|
V2-7 (BECU) - Body ground |
GR - Body ground |
BECU power supply |
Always |
11 to 14 V |
|
V3-10 (BDCY) - V3-20 (CTYE) |
P - R |
Back door courtesy switch circuit |
Back door is open |
Below 1 Ω |
|
V3-10 (BDCY) - V3-20 (CTYE) |
P - R |
Back door courtesy switch circuit |
Back door is closed |
10 kΩ or higher |
|
V3-15 (HSW+) - V3-24 (HSW-) |
B - W |
Back door opener switch signal circuit |
Back door opener switch OFF |
10 kΩ or higher |
|
V3-15 (HSW+) - V3-24 (HSW-) |
B - W |
Back door opener switch signal circuit |
Back door opener switch ON |
Below 1 Ω |
|
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.
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