TERMINALS OF ECU
1. A/C AMPLIFIER
HINT:
Check from the rear of the connector while it is connected to the A/C amplifier.
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
---|---|---|---|---|
D47-1 (IG+) - D47-14 (GND) |
Y - W |
Power source (IG) |
Ignition switch ON |
11 to 14 V |
D47-1 (IG+) - D47-14 (GND) |
Y - W |
Power source (IG) |
Ignition switch off |
Below 1 V |
D47-2 (SOL+) - D47-14 (GND) |
L - W |
A/C compressor solenoid operation signal |
Engine running A/C switch: on Blower switch: LO |
Pulse generation (See waveform 1) |
D47-5 (TAM) - D47-13 (GND) |
V - L |
Ambient temperature sensor signal |
Ignition switch ON Ambient temperature: 25°C (77°F) |
1.35 to 1.75 V |
D47-5 (TAM) - D47-13 (GND) |
V - L |
Ambient temperature sensor signal |
Ignition switch ON Ambient temperature: 40°C (104°F) |
0.9 to 1.2 V |
D47-8 (LOCK) - D47-13 (GND)*1 |
P - L |
A/C compressor lock sensor signal |
Engine running Blower switch: LO A/C switch: on |
Pulse generation (See waveform 2) |
D47-9 (PRE) - D47-13 (GND) |
R - L |
A/C pressure sensor signal |
Start engine, Operate A/C system, Refrigerant pressure: Abnormal pressure (more than 3140 kPa (32.0 kgf/cm2, 455 psi)) |
4.84 V or higher |
D47-9 (PRE) - D47-13 (GND) |
R - L |
A/C pressure sensor signal |
Start engine, Operate A/C system, Refrigerant pressure: Abnormal pressure (less than 196 kPa (2.0 kgf/cm2, 28 psi)) |
Below 0.73 V |
D47-9 (PRE) - D47-13 (GND) |
R - L |
A/C pressure sensor signal |
Start engine, Operate A/C system, Refrigerant pressure: Normal pressure (less than 3140 kPa (32.0 kgf/cm2, 455 psi) and more than 196 kPa (2.0 kgf/cm2, 28 psi)) |
0.73 to 4.84 V |
D47-10 (S5-3) - D47-13 (GND) |
P - L |
Power supply for A/C pressure sensor |
Ignition switch ON A/C switch: on |
4.75 to 5.25 V |
D47-10 (S5-3) - D47-13 (GND) |
P - L |
Power supply for A/C pressure sensor |
Ignition switch ON A/C switch: off |
Below 1 V |
D47-11 (CANH) - D47-12 (CANL) |
P - W |
CAN communication system |
CAN communication circuit |
Pulse generation |
D47-13 (GND) - Body ground |
L - Body ground |
Ground for A/C pressure sensor, A/C ambient temperature sensor, A/C lock sensor |
Always |
Below 1 V |
D47-14 (GND) - Body ground |
W - Body ground |
Ground for main power supply |
Always |
Below 1 V |
D47-18 (D) - D47-14 (GND) |
G - W |
DEF relay signal |
Ignition switch ON REAR DEF switch: on |
Below 1 V |
D47-18 (D) - D47-14 (GND) |
G - W |
DEF relay signal |
Ignition switch ON REAR DEF switch: off |
11 to 14 V |
D47-20 (MGC) - D47-14 (GND)*1 |
Y - W |
A/C compressor magnetic clutch operation signal |
Ignition switch ON Blower switch: LO A/C switch: off |
11 to 14 V |
D47-20 (MGC) - D47-14 (GND)*1 |
Y - W |
A/C compressor magnetic clutch operation signal |
Ignition switch ON Blower switch: LO A/C switch: on |
Below 1 V |
D47-21 (B) - D47-14 (GND) |
V - W |
Power source (Back-up) |
Always |
11 to 14 V |
D47-23 (BLW) - D47-14 (GND) |
R - W |
Blower motor speed control signal |
Ignition switch ON Blower switch: LO |
Pulse generation (See waveform 3) |
D47-29 (TR) - D47-34 (SG-1) |
LG - V |
Room temperature sensor signal |
Ignition switch ON Cabin temperature: 25°C (77°F) |
1.8 to 2.2 V |
D47-29 (TR) - D47-34 (SG-1) |
LG - V |
Room temperature sensor signal |
Ignition switch ON Cabin temperature: 40°C (104°F) |
1.2 to 1.6 V |
D47-32 (TSP) - D47-14 (GND) |
LG - W |
Solar sensor signal (for Front passenger side) |
Ignition switch ON Solar sensor subjected to electric light |
0.8 to 4.3 V |
D47-32 (TSP) - D47-14 (GND) |
LG - W |
Solar sensor signal (for Front passenger side) |
Ignition switch ON Solar sensor covered with a cloth |
Below 0.8 V |
D47-33 (TSD) - D47-14 (GND) |
P - W |
Solar sensor signal (for Driver side) |
Ignition switch ON Solar sensor subjected to electric light |
0.8 to 4.3 V |
D47-33 (TSD) - D47-14 (GND) |
P - W |
Solar sensor signal (for Driver side) |
Ignition switch ON Solar sensor covered with a cloth |
Below 0.8 V |
D47-34 (SG-1) - Body ground |
V - Body ground |
Ground for room temperature sensor |
Always |
Below 1 V |
D47-37 (LIN1) - D47-14 (GND) |
SB - W |
LIN communication signal |
Ignition switch ON |
Pulse generation |
z7-2 (BUS G) - Body ground |
- |
Ground for BUS IC |
Always |
Below 1 V |
z7-3 (BUS) - z7-2 (BUS G) |
- |
BUS IC control signal |
Ignition switch ON |
Pulse generation |
z7-4 (B BUS) - z7-2 (BUS G) |
- |
Power supply for BUS IC |
Ignition switch off |
Below 1 V |
z7-4 (B BUS) - z7-2 (BUS G) |
- |
Power supply for BUS IC |
Ignition switch ON |
11 to 14 V |
z7-5 (SGA) - Body ground |
- |
Ground for evaporator temperature sensor |
Always |
Below 1 V |
z7-6 (TEA) - z7-5 (SGA) |
- |
A/C evaporator temperature sensor signal |
Ignition switch ON Evaporator temperature: 0°C (32°F) |
1.7 to 2.1 V |
z7-6 (TEA) - z7-5 (SGA) |
- |
A/C evaporator temperature sensor signal |
Ignition switch ON Evaporator temperature: 15°C (59°F) |
0.9 to 1.3 V |
(a) Waveform 1:
Item |
Content |
---|---|
Terminal No. |
D47-2 (SOL+) - D47-14 (GND) |
Tool Setting |
5 V/DIV., 500 μs/DIV. |
Vehicle Condition |
Engine running A/C switch: on |
(b) Waveform 2:
Item |
Content |
---|---|
Terminal No. |
D47-8 (LOCK) - D47-13 (GND) |
Tool Setting |
200 mV/DIV., 10 ms./DIV. |
Vehicle Condition |
Engine running Blower switch: LO A/C switch: on |
(c) Waveform 3:
Item |
Content |
---|---|
Terminal No. |
D47-23 (BLW) - D47-14 (GND) |
Tool Setting |
1 V/DIV., 500 μs/DIV. |
Vehicle Condition |
Ignition switch ON Blower switch: LO |
2. 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 |
---|---|---|---|---|
E3-1 (ILL-) - E3-3 (ILL+) |
L - BR |
Light control switch signal |
Light control switch: OFF |
Below 1 V |
E3-1 (ILL-) - E3-3 (ILL+) |
L - BR |
Light control switch signal |
Light control switch: TAIL |
11 to 14 V |
E3-2 (LIN1) - E3-5 (GND) |
SB - W |
LIN communication signal |
Ignition switch ON |
Pulse generation |
E3-4 (IG+) - E3-5 (GND) |
GR - W |
Power source (IG) |
Ignition switch off |
Below 1 V |
E3-4 (IG+) - E3-5 (GND) |
GR - W |
Power source (IG) |
Ignition switch ON |
11 to 14 V |
E3-5 (GND) - Body ground |
W - Body ground |
Ground for front air conditioning control assembly |
Always |
Below 1 V |
Removal
REMOVAL
CAUTION / NOTICE / HINT
HINT:
The front side fix window assembly can be reused. When installing the
window, if any of the clips on the front side fix window assembly are broken,
butyl tape can be used to support the glass until the a ...
Steering Pad Switch Circuit
DESCRIPTION
This circuit sends an operation signal from the steering pad switch assembly
to the navigation receiver assembly.
If there is an open in the circuit, the audio system cannot be operated using
the steering pad switch assembly.
If there is a s ...
Reassembly
REASSEMBLY
PROCEDURE
1. INSTALL COOLER DRYER
(a) Using pliers, install a new cooler dryer to the modulator.
(b) Apply sufficient compressor oil to the O-ring and fitting surfaces
of t ...