HVAC SYSTEM (AUTO A/C) (DIAGNOSTICS) > Auto A/C Control Module I/O Signal
|
Terminal No. |
Remarks |
Measuring condition |
Standard |
|
1 |
Mode actuator #4 |
Actuator operating |
8 V or more |
|
2 |
Mode actuator #3 |
Actuator operating |
8 V or more |
|
3 |
Mode actuator #2 |
Actuator operating |
8 V or more |
|
4 |
Mode actuator #1 |
Actuator operating |
8 V or more |
|
6 |
Intake door actuator (FRESH) |
FRESH mode |
1 V or less |
|
7 |
Intake door actuator (MIX) |
MIX mode |
1 V or less |
|
8 |
Intake door actuator (RECIRC) |
RECIRC mode |
1 V or less |
|
9 |
Blower fan ON signal |
Blower fan is ON |
1 V or less |
|
11 |
A/C cut signal |
A/C is cut off |
1 V or less |
|
14 |
GND for sensors |
Always |
1 V or less |
|
15 |
ACC power supply |
ACC ON |
Battery voltage |
|
16 |
Sunload sensor |
Sunlight is contacting sensor |
1 — 4 V |
|
17 |
RECIRC sensor |
Ignition switch ON |
25°C: 2.5 V |
|
18 |
Post evaporator sensor |
Depends on temperature after the evaporator. |
1 — 4.5 V |
|
19 |
CAN Lo |
Digital signal; can not be measured |
— |
|
20 |
CAN Hi |
Digital signal; can not be measured |
— |
|
25 |
Air mix actuator #4 |
Air mix actuator is operating |
8 V or more |
|
26 |
Air mix actuator #3 |
Air mix actuator is operating |
8 V or more |
|
27 |
Air mix actuator #2 |
Air mix actuator is operating |
8 V or more |
|
28 |
Air mix actuator #1 |
Air mix actuator is operating |
8 V or more |
|
31 |
BATT |
Always |
Battery voltage |
|
32 |
IGN |
Ignition ON |
Battery voltage |
|
34 |
GND |
Always |
1 V or less |
|
36 |
A/C ON signal |
A/C is operating |
8 V or more |
|
35 |
ILL− |
Illumination ON (measure between 37 — 35) |
Battery voltage |
|
37 |
ILL+ | ||
|
39 |
Rr defogger switch output |
When the rear defogger switch is ON |
1 V or less |
|
40 |
Fan control signal |
Ignition switch : ON, Blower switch : ON |
8 V or more |
|
Terminal No. |
Remarks |
Measuring condition |
Standard |
|
1 |
Mode actuator #4 |
Actuator operating |
8 V or more |
|
2 |
Mode actuator #3 |
Actuator operating |
8 V or more |
|
3 |
Mode actuator #2 |
Actuator operating |
8 V or more |
|
4 |
Mode actuator #1 |
Actuator operating |
8 V or more |
|
5 |
PTC heater 2 |
PTC heater active |
1 V or less |
|
6 |
Intake door actuator (FRESH) |
FRESH mode |
1 V or less |
|
7 |
Intake door actuator (MIX) |
MIX mode |
1 V or less |
|
8 |
Intake door actuator (RECIRC) |
RECIRC mode |
1 V or less |
|
9 |
Blower fan ON signal |
Blower fan is ON |
1 V or less |
|
11 |
A/C cut signal |
A/C is cut off |
1 V or less |
|
12 |
Mini PTC heater |
PTC heater active |
1 V or less |
|
14 |
GND for sensors |
Always |
1 V or less |
|
15 |
ACC power supply |
ACC ON |
Battery voltage |
|
16 |
Sunload sensor |
Sunlight is contacting sensor |
1 — 4 V |
|
17 |
RECIRC sensor |
Ignition switch ON |
25°C: 2.5 V |
|
18 |
Post evaporator sensor |
Depends on temperature after the evaporator. |
1 — 4.5 V |
|
19 |
CAN Lo |
Digital signal; can not be measured |
— |
|
20 |
CAN Hi |
Digital signal; can not be measured |
— |
|
25 |
Air mix actuator #4 |
Air mix actuator is operating |
8 V or more |
|
26 |
Air mix actuator #3 |
Air mix actuator is operating |
8 V or more |
|
27 |
Air mix actuator #2 |
Air mix actuator is operating |
8 V or more |
|
28 |
Air mix actuator #1 |
Air mix actuator is operating |
8 V or more |
|
29 |
PTC heater 1 |
PTC heater active |
1 V or less |
|
30 |
PTC heater 2 |
PTC heater active |
1 V or less |
|
31 |
BATT |
Always |
Battery voltage |
|
32 |
IGN |
Ignition ON |
Battery voltage |
|
33 |
Mini PTC heater |
PTC heater active |
1 V or less |
|
34 |
GND |
Always |
1 V or less |
|
35 |
ILL− |
Illumination ON (measure between 37 — 35) |
Battery voltage |
|
37 |
ILL+ | ||
|
38 |
Compressor speed sensor signal |
Compressor is running |
Pulse output |
|
39 |
Rr defogger switch output |
When rear defogger relay is ON |
Battery voltage |
|
40 |
Fan control signal |
Ignition switch : ON, Blower switch : ON |
8 V or more |