Toyota Camry (XV70): Terminals Of Ecu
TERMINALS OF ECU
CHECK INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY AND MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)
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(a) Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly.
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(b) Reconnect the instrument panel junction block assembly connectors.
(c) Measure the voltage and resistance according to the value(s) in the table below.
|
Terminal No. (Symbol) | Wiring Color |
Input/Output | Terminal Description |
Condition | Specified Condition |
Related Data List Item |
|---|---|---|---|---|---|---|
|
MB-11 (GND1) - Body ground |
- | - |
Ground | Always |
Below 1 ? | - |
|
MB-30 (ACC) - Body ground |
- | Input |
ACC power supply | Ignition switch ACC |
11 to 14 V |
ACC SW |
| Ignition switch off |
Below 1 V | |||||
|
MB-31 (BECU) - Body ground |
- | Input |
Battery power supply |
Always | 11 to 14 V |
- |
|
MB-32 (IG) - Body ground |
- | Input |
IG power supply | Ignition switch ON |
11 to 14 V |
IG SW |
| Ignition switch off |
Below 1 V |
(d) Install the main body ECU (multiplex network body ECU) to the instrument panel junction block assembly.
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(e) Measure the voltage and check for pulses according to the value(s) in the table below.
|
Terminal No. (Symbol) | Wiring Color |
Input/Output | Terminal Description |
Condition | Specified Condition |
Related Data List Item |
|---|---|---|---|---|---|---|
|
K52-1 (FLCY) - Body ground |
W- Body ground | Input |
Front door courtesy light switch (for LH) input |
Front door LH open > closed |
Below 1 V > 11 to 14 V or pulse output (maximum 14 V)*2 |
FL Door Courtesy SW |
|
K52-6 (FRCY) - Body ground |
BE - Body ground | Input |
Front door courtesy light switch (for RH) input |
Front door RH open > closed |
Below 1 V > 11 to 14 V or pulse output (maximum 14 V)*2 |
FR Door Courtesy SW |
|
3D-24 (LCTY) - Body ground |
G - Body ground | Input |
Rear door courtesy light switch (for LH) input |
Rear door LH open > closed |
Below 1 V > 11 to 14 V or pulse output (maximum 14 V)*2 |
RL Door Courtesy SW |
|
3A-31 (RCTY) - Body ground |
V - Body ground | Input |
Rear door courtesy light switch (for RH) input |
Rear door RH open > closed |
Below 1 V > 11 to 14 V or pulse output (maximum 14 V)*2 |
RR Door Courtesy SW |
|
3B-13 (LSFL) - Body ground |
W - Body ground | Input |
Front door LH unlock detection switch input |
Front door LH unlocked > locked |
Below 1 V > 11 to 14 V or pulse output (maximum 14 V)*2 |
FL Door Lock Pos SW |
|
3B-12 (LSFR) - Body ground |
GR - Body ground | Input |
Front door RH unlock detection switch input |
Front door RH unlocked > locked |
Below 1 V > 11 to 14 V or pulse output (maximum 14 V)*2 |
FR Door Lock Pos SW |
|
3B-14 (LSWL) - Body ground |
GR - Body ground | Input |
Rear door LH unlock detection switch input |
Rear door LH unlocked > locked |
Below 1 V > 11 to 14 V or pulse output (maximum 14 V)*2 |
RL-Door Lock Pos SW |
|
K51-20 (LSWR) - Body ground |
L - Body ground | Input |
Rear door RH unlock detection switch input |
Rear door RH unlocked > locked |
Below 1 V > 11 to 14 V or pulse output (maximum 14 V)*2 |
RR-Door Lock Pos SW |
|
3D-8 (ACT-) - Body ground |
R - Body ground | Output |
Door lock motor unlock drive output |
Door control switch or driver door key cylinder off > on (unlock) |
Below 1 V > 11 to 14 V > Below 1 V |
- |
| 3D-9 (ACT-) - Body ground |
R - Body ground | Output |
Door lock motor unlock drive output |
Door control switch or driver door key cylinder off > on (unlock) |
Below 1 V > 11 to 14 V > Below 1 V |
- |
| 3D-6 (ACT+) - Body ground |
B - Body ground | Output |
Door lock motor lock drive output |
Door control switch or driver door key cylinder off > on (lock) |
Below 1 V > 11 to 14 V > Below 1 V |
- |
| 3D-18 (ACT+) - Body ground |
B - Body ground | Output |
Door lock motor lock drive output |
Door control switch or driver door key cylinder off > on (lock) |
Below 1 V > 11 to 14 V > Below 1 V |
- |
| 3B-4 (ACTD) - Body ground |
L - Body ground | Output |
Door lock motor unlock drive output |
Door control switch or driver door key cylinder off > on (unlock) |
Below 1 V > 11 to 14 V > Below 1 V |
- |
| 3B-16 (L1) - Body ground |
LG - Body ground | Output |
Door control switch assembly input |
Door control switch assembly off > on (lock) |
Pulse generation > Below 1 V |
Door Lock SW-Lock |
|
3A-39 (UL1) - Body ground |
GR - Body ground | Input |
Door control switch assembly input |
Door control switch assembly off > on (unlock) |
Pulse generation > Below 1 V |
Door Lock SW-Unlock |
|
K53-17 (UL3) - Body ground |
BE - Body ground | Input |
Driver door key-linked unlock input |
Driver door key cylinder in neutral position > on (unlock) |
11 to 14 V > Below 1 V |
D Door Key SW-UL |
|
K53-18 (L2) - Body ground |
LG - Body ground | Input |
Driver door key-linked lock input |
Driver door key cylinder in neutral position > on (lock) |
11 to 14 V > Below 1 V |
Door Key SW-Lock |
|
3A-41 (KSW) - Body ground*1 |
V - Body ground | Input |
Key unlock warning switch input |
No key in ignition key cylinder > Key in ignition key cylinder |
11 to 14 V > Below 1 V |
Key Unlock Warning SW |
|
3A-7 (GSW) - Body ground |
B - Body ground | Input |
Airbag sensor signal (collision detection signal) |
Ignition switch ON with airbag sensor assembly connector disconnected |
4.3 to 5.5 V | - |
- *1: w/o Smart Key System
- *2: Differs depending on the vehicle model
CHECK AIRBAG SENSOR ASSEMBLY
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SEE MORE:
Removal
REMOVAL PROCEDURE 1. REMOVE FRONT DOOR SCUFF PLATE LH
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2. REMOVE COWL SIDE TRIM SUB-ASSEMBLY LH
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3. DISCONNECT FRONT DOOR OPENING TRIM WEATHERSTRIP LH
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4. REMOVE INSTRUMENT SIDE PANEL LH
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Components
COMPONENTS ILLUSTRATION
*1 V-BANK COVER SUB-ASSEMBLY
*2 AIR FUEL RATIO SENSOR (for Bank 1)
*3 AIR FUEL RATIO SENSOR (for Bank 2)
- -
N*m (kgf*cm, ft.*lbf): Specified torque
* For use with SST
