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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READ NEXT:
Dtc Check / Clear
DTC CHECK / CLEAR CHECK DTC (a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON. (c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Main Body / Troub
Data List / Active Test
DATA LIST / ACTIVE TEST DATA LIST HINT:
Using the Techstream to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. T
Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART Power Door Lock Control System
DTC No. Detection Item
Link B1243
GSW Terminal Circuit Malfunction
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DESCRIPTION When the system is starting up and the skid control ECU (brake actuator assembly) detects a speed sensor circuit malfunction via the speed sensor circuit self-diagnosis function, this DTC is stored.
DTC No. Detection Item
DTC Detection Condition Trouble Area
C050C4
Lost Communication with Instrument Panel Cluster (IPC) Control Module Missing Message (U015587)
DESCRIPTION The ECM and combination meter assembly send and receive signals via CAN communication.
If a communication error occurs between the ECM and combination meter assembly, the ECM illuminates the MIL and stores this DTC.
DTC No. Detection Item
DTC Detection Condition Trouble
