HVAC Control Unit Connector for Inputs and Outputs
HVAC Control Unit Connector for Inputs and Outputs

Cavity
Terminal name
Description
1
RR DEF RLY CL-
Signal for rear window defogger relay
2
Not used
???
3
ECON OUT
Inputs ECON mode control signal
4
Not used
???
5
GND
Ground for HVAC control unit (G502)
6
Not used
???
7
A/C CUT
Outputs A/C off permit signal
8
Not used
???
9
BLOWER G
Outputs power transistor gate voltage
10
BLOWER V
Feedback signal of power transistor drain voltage
11
Not used
???
12
IG2 A/C
IG2 power source
13
Not used
???
14
ILL-(LED)
Detects illumination control signal
15
Not used
???
16
ILLUMI+
Power source for illumination
17
SENSOR 5V
Outputs sensor 5 V
18
Not used
???
19
TEVA
Detects evaporator temperature sensor signal
20
SENSOR COM
Sensor ground
21
RFD-P
Detects potentiometer signal of recirculation control motor (door position)
22
AMD P DR
Detects potentiometer signal of air mix control motor (door position)
23
MODE-P
Detects potentiometer signal of mode control motor (door position)
24
Not used
???
25
ACS
Outputs A/C on/off signal
26
Not used
???
27
M-HOT DR
Output to drive air mix control motor to HOT side
28
M-COOL DR
Output to drive air mix control motor to COOL side
29
M-VENT
Outputs to drive mode control motor to VENT side
30
M-DEF
Outputs to drive mode control motor to DEF side
31
F/R MTR(REC)
Output to drive recirculation control motor to RECIRCULATE side
32
F/R MTR(FRESH)
Output to drive recirculation control motor to FRESH side