TERMINALS OF ECU
AIR CONDITIONING AMPLIFIER ASSEMBLY
HINT:
Check from the rear of the connector while it is connected to the air conditioning amplifier assembly.
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
---|---|---|---|---|
F138-1 (SG-1) - Body ground |
LG - Body ground |
Ground for cooler thermistor (room temperature sensor) |
Always |
Below 1 V |
F138-2 (SG-2) - Body ground |
G - Body ground |
Ground for air conditioner pressure sensor |
Always |
Below 1 V |
F138-6 (S5-3) - F138-2 (SG-2) |
GR - G |
Power supply for air conditioner pressure sensor |
Ignition switch ON |
4.75 to 5.25 V |
Ignition switch off |
Below 1 V |
|||
F138-14 (TR) - F138-1 (SG-1) |
B - LG |
Cooler thermistor (room temperature sensor) signal |
|
1.8 to 2.2 V |
|
1.2 to 1.6 V |
|||
F138-24 (PRE) - F138-2 (SG-2) |
V - G |
Air conditioner pressure sensor signal |
|
4.61 V or higher |
|
Below 0.74 V |
|||
|
0.74 to 4.61 V |
|||
F139-1 (B) - F139-4 (GND) |
V - W-B |
Power source (Back-up) |
Always |
11 to 14 V |
F139-2 (IG+) - F139-4 (GND) |
B - W-B |
Power source (IG) |
Ignition switch ON |
11 to 14 V |
Ignition switch off |
Below 1 V |
|||
F139-3 (SOL+) - F139-4 (GND) |
B - W-B |
Compressor solenoid operation signal |
|
Pulse generation (See waveform 1) |
F139-4 (GND) - Body ground |
W-B - Body ground |
Ground for main power supply |
Always |
Below 1 V |
F139-6 (BLW) - F139-4 (GND) |
Y - W-B |
Blower motor speed control signal |
|
Pulse generation (See waveform 2) |
F139-11 (CANH) - F139-12 (CANL) |
P - SB |
CAN communication signal |
CAN communication is performed |
Pulse generation |
F139-14 (LIN1) - F139-4 (GND) |
BE - W-B |
LIN communication signal (Air conditioning control assembly) |
Ignition switch ON |
Pulse generation (See waveform 3) |
m1-2 (BUSG) - Body ground |
B - Body ground |
Ground for BUS IC |
Always |
Below 1 V |
m1-3 (BUS) - m1-2 (BUSG) |
L - B |
BUS IC control signal |
Ignition switch ON |
Pulse generation (See waveform 4) |
m1-4 (BUSB) - m1-2 (BUSG) |
R - B |
Power supply for BUS IC |
Always |
11 to 14 V |
m1-5 (SG-4) - Body ground |
GR - Body ground |
Ground for No. 1 cooler thermistor (evaporator temperature sensor) |
Always |
Below 1 V |
m1-6 (TE) - m1-5 (SG-4) |
GR - GR |
No. 1 cooler thermistor (evaporator temperature sensor) |
|
1.7 to 2.1 V |
|
0.9 to 1.3 V |
(a) Waveform 1:
Item |
Content |
---|---|
Terminal No. (Symbol) |
F139-3 (SOL+) - F139-4 (GND) |
Tool Setting |
5 V/DIV., 500 μs/DIV. |
Vehicle Condition |
|
(b) Waveform 2:
Item |
Content |
---|---|
Terminal No. |
F139-6 (BLW) - F139-4 (GND) |
Tool Setting |
2 V/DIV., 1 ms./DIV. |
Vehicle Condition |
|
(c) Waveform 3:
Item |
Content |
---|---|
Terminal No. |
F139-14 (LIN1) - F139-4 (GND) |
Tool Setting |
2 V/DIV., 20 ms./DIV. |
Vehicle Condition |
Ignition switch ON |
(d) Waveform 4:
Item |
Content |
---|---|
Terminal No. |
m1-3 (BUS) - m1-2 (BUS G) |
Tool Setting |
2 V/DIV., 2 ms./DIV. |
Vehicle Condition |
Ignition switch ON |
AIR CONDITIONING CONTROL ASSEMBLY
HINT:
Check from the rear of the connector while it is connected to the air conditioning control assembly.
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
---|---|---|---|---|
F61-16 (GND) - Body ground |
W-B - Body ground |
Ground for air conditioning control assembly |
Always |
Below 1 V |
F61-2 (LIN1) - Body ground |
BE - Body ground |
LIN communication signal |
Ignition switch ON |
Pulse generation (See waveform 1) |
F61-10 (IG+) - F61-16 (GND) |
BE - W-B |
Power source (IG) |
Ignition switch off |
Below 1 V |
Ignition switch ON |
11 to 14 V |
(a) Waveform 1:
Item |
Content |
---|---|
Terminal No. |
F61-2 (LIN1) - Body ground |
Tool Setting |
2 V/DIV., 20 ms./DIV. |
Vehicle Condition |
Ignition switch ON |
Toyota CH-R Service Manual > Power Window Control System: Driver Side Power Window Auto Up / Down Function does not Operate with Power
Window Master Switch
DESCRIPTION
If the manual up and down functions operate normally but the auto up and down
functions do not, the power window control system may be in fail-safe mode.
If power window initialization has not been performed, the auto up and down functions
will not operate.
Click here
WIRING ...
Toyota CH-R Service Manual > Pre-collision System: Vehicle Information Not Obtained (C1A02)
DESCRIPTION
When a new millimeter wave radar sensor assembly is installed, it receives vehicle
specification information (destination) from the main body ECU (multiplex network
body ECU) and stores the information.
DTC C1A02 is stored when the millimeter wave radar sensor assembly cannot store ...