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 > Tire Pressure Warning System: Initialization Switch (for Test Mode DTC) (C2198/98)
DESCRIPTION
The switch circuit inside the combination meter assembly turns on and off according
to the steering pad switch assembly operation.
During test mode, when the steering pad switch assembly is operated, "TPMS" is
selected on the multi-information display and the "ENTER& ...
Toyota CH-R Service Manual > Theft Deterrent System: Engine Hood Courtesy Switch Circuit
DESCRIPTION
The hood courtesy switch is built into the hood lock assembly. This switch turns
on when the hood is closed and turns off when the hood is opened.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Before replacing the main body ECU (multiplex network body ECU), refer to REGISTRATIO ...