TERMINALS OF ECU
1. 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 |
---|---|---|---|---|
A14-1 (IG+) - A14-12 (GND) |
P - W-B |
Power source (IG) |
Ignition switch ON |
11 to 14 V |
Ignition switch off |
Below 1 V |
|||
A14-2 (BLRH) - A14-12 (GND) |
SB - W-B |
Blower switch signal |
|
Below 1 V |
|
11 to 14 V |
|||
A14-3 (MC) - A14-12 (GND) |
BE - W-B |
Air mix select switch signal |
|
1 to 14 V |
|
Below 1 V |
|||
A14-4 (LOCK) - A14-12 (GND) |
G - W-B |
A/C lock sensor signal |
|
Pulse generation (See waveform 1) |
A14-5 (PRE) - A14-12 (GND) |
V - W-B |
Air conditioner pressure sensor signal |
|
4.71 V or higher |
|
Below 0.74 V |
|||
|
0.74 to 4.71 V |
|||
A14-6 (TE) - A14-32 (SG-2) |
B - GR |
Evaporator temperature sensor signal |
|
1.7 to 2.1 V |
|
0.9 to 1.3 V |
|||
A14-7 (TAM) - A14-33 (SG-1) |
W - LG |
Ambient temperature sensor signal |
|
1.35 to 1.75 V |
|
0.9 to 1.2 V |
|||
A14-8 (S5-1) - A14-12 (GND) |
SB - W-B |
Power supply for air conditioner pressure sensor |
Ignition switch off |
Below 1 V |
Ignition switch ON |
4.5 to 5.5 V |
|||
A14-9 (ACT) - A14-12 (GND) |
R - W-B |
Compressor operation signal |
|
Below 1 V |
|
4.75 to 5.25 V |
|||
A14-10 (CANH) |
L |
CAN communication system |
- |
- |
A14-11 (CANL) |
W |
CAN communication system |
- |
- |
A14-12 (GND) - Body ground |
W-B - Body ground |
Ground for main power supply |
Always |
Below 1 Ω |
A14-13 (PTC3) - A14-12 (GND)*1 |
P - W-B |
Quick heater operation signal |
|
11 to 14 V |
|
Below 1 V |
|||
A14-14 (PTC2) - A14-12 (GND)*1 |
W - W-B |
Quick heater operation signal |
|
11 to 14 V |
|
Below 1 V |
|||
A14-15 (PTC1) - A14-12 (GND)*1 |
V - W-B |
Quick heater operation signal |
|
11 to 14 V |
|
Below 1 V |
|||
A14-18 (MGC) - A14-12 (GND) |
G - W-B |
Magnetic clutch operation signal |
|
11 to 14 V |
|
Below 1 V |
|||
A14-20 (REC) - A14-12 (GND) |
R - W-B |
Recirculation/Fresh switch signal |
|
11 to 14 V (Servo motor operating) |
A14-21 (B) - A14-12 (GND) |
LG - W-B |
Power source (Back-up) |
Always |
11 to 14 V |
A14-22 (DEF) - A14-12 (GND) |
R - W-B |
Mode switch signal |
|
1 to 14 V |
|
Below 1 V |
|||
A14-26 (MR/F) - A14-12 (GND) |
SB - W-B |
REC switch operation signal |
|
4 to 5 V |
|
Below 1 V |
|||
A14-27 (A/C) - A14-12 (GND) |
GR - W-B |
A/C switch operation signal |
|
4 to 5 V |
|
Below 1 V |
|||
A14-32 (SG-2) - Body ground |
GR - Body ground |
Ground for evaporator temperature sensor |
Always |
Below 1 Ω |
A14-33 (SG-1) - Body ground |
LG - Body ground |
Ground for air conditioner pressure sensor, ambient temperature sensor, A/C lock sensor |
Always |
Below 1 Ω |
A14-35 (ACID) - A14-12 (GND) |
B - W-B |
A/C switch LED signal |
|
11 to 14 V |
|
Below 3 V |
|||
A14-37 (AC1) - A14-12 (GND) |
BE - W-B |
Compressor operation signal |
|
11 to 14 V |
|
Below 1 V |
|||
A14-40 (FRS) - A14-12 (GND) |
V - W-B |
Recirculation/Fresh switch signal |
|
11 to 14 V Servo motor operating) |
(a) Waveform 1:
Item |
Content |
---|---|
Terminal No. |
A14-4 (LOCK) - A14-12 (GND) |
Tool Setting |
200 mV/DIV., 10 ms./DIV. |
Vehicle Condition |
|
2. ECM (2TR-FE) (See page
)
3. ECM (2GR-FKS) (See page
)
Illumination for Panel Switch does not Come on with Tail Switch ON
PROCEDURE
1.
CHECK VEHICLE SIGNAL (OPERATION CHECK)
(a) Enter the "Vehicle Signal Check Mode" screen. Refer to Check Vehicle Signal
in Operation Check (See page ).
(b) Check that the display changes between ON and OFF according to the light
control ...
Cruise control
Use the cruise control to maintain a set speed without depressing the accelerator
pedal.
Indicator
Cruise control switch
■ Setting the vehicle speed
Press the ON-OFF button to activate the cruise control.
Cruise control indicator will come on.
Press the button again to deactivate ...
Slip Indicator Light does not Come ON
DESCRIPTION
Refer to Slip Indicator Light Remains ON (See page
).
WIRING DIAGRAM
Refer to Slip Indicator Light Remains ON (See page
).
CAUTION / NOTICE / HINT
NOTICE:
When replacing the skid control ECU (brake actuator assembly), perform zero point
calibration and store system informatio ...