Climate Control Unit Connector for Inputs and Outputs
Climate Control Unit Connector for Inputs and Outputs

Cavity
Wire color
Terminal name
Description
Signal
1
BRN
GND
Ground for climate control unit (G506)
With ignition switch ON (II), or vehicle in ON mode: less than 0.2 V
2
PNK
M-HOT DR
Output to drive driver's air mix control motor to HOT side
With ignition switch ON (II), or vehicle in ON mode, and driver's air mix control motor moving to HOT: battery voltage
3
LT BLU
M-COOL DR
Output to drive driver's air mix control motor to COOL side
With ignition switch ON (II), or vehicle in ON mode, and driver's air mix control motor moving to COOL: battery voltage
4
WHT
MODE MTR VENT
Outputs to drive mode control motor to VENT side
With ignition switch ON (II), or vehicle in ON mode, and mode control motor moving to VENT: battery voltage
5
GRN
MODE MTR DEF
Outputs to drive mode control motor to DEF side
With ignition switch ON (II), or vehicle in ON mode, and mode control motor moving to DEF: battery voltage
6
LT GRN
IG2 A/C
IG2 power source
With ignition switch ON (II), or vehicle in ON mode: battery voltage
7
GRY
ILLUMI+
Power source for illumination
With combination light switch ON: battery voltage
8
Not used
Not used
???
???
9
TAN
ILL-(LED)
Detects illumination control signal
With combination light switch ON: changed voltage (depending on dashlights brightness controller)
10
GRY
AMD-P DR
Detects potentiometer signal of driver's air mix control motor (door position)
With ignition switch ON (II), or vehicle in ON mode: about 1.0?4.0 V (depending on driver's air mix control motor position)
11
PUR
AMD-P AS
Detects potentiometer signal of passenger's air mix control motor (door position)
With ignition switch ON (II), or vehicle in ON mode: about 1.0?4.0 V (depending on passenger's air mix control motor position)
12
GRN
MDD-P
Detects potentiometer signal of mode control motor (door position)
With ignition switch ON (II), or vehicle in ON mode: about 0.5?4.5 V (depending on mode control motor position)
13
RED
ACS
Outputs A/C on/off signal
With ignition switch ON (II), or vehicle in ON mode, normal A/C pressure, and A/C button ON: less than 0.2 V

With ignition switch ON (II), or vehicle in ON mode, normal A/C pressure, and A/C button OFF: battery voltage
14
YEL
BLOWER G
Outputs power transistor gate voltage
With ignition switch ON (II), or vehicle in ON mode, and fan control button OFF: less than 0.2 V

With ignition switch ON (II), or vehicle in ON mode, and fan control button ON: about 4.0 V?battery voltage (depending on blower motor control)
15
BLU
BLOWER V
Feedback signal of power transistor drain voltage
With ignition switch ON (II), or vehicle in ON mode: about 0 V?battery voltage (depending on blower motor speed)
16
BRN
RR DEF RLY CL-
Signal for rear window defogger relay
With ignition switch ON (II), or vehicle in ON mode, and rear window defogger button ON: about 0 V

With ignition switch ON (II), or vehicle in ON mode, and rear window defogger button OFF: battery voltage
17
LT GRN
M-HOT AS
Output to drive passenger's air mix control motor to HOT side
With ignition switch ON (II), or vehicle in ON mode, and passenger's air mix control motor moving to HOT: battery voltage
18
BLU
M-COOL AS
Output to drive passenger's air mix control motor to COOL side
With ignition switch ON (II), or vehicle in ON mode, and passenger's air mix control motor moving to COOL: battery voltage
19
ORN
F/R MTR(REC)
Output to drive recirculation control motor to RECIRCULATE side
With ignition switch ON (II), or vehicle in ON mode, and recirculation control motor moving to RECIRCULATE: battery voltage
20
PUR
F/R MTR(FRESH)
Output to drive recirculation control motor to FRESH side
With ignition switch ON (II), or vehicle in ON mode, and recirculation control motor moving to FRESH: battery voltage
21
BRN
GND
Ground for climate control unit (G506)
With ignition switch ON (II), or vehicle in ON mode: less than 0.2 V
22
BLU
SENSOR COM
Sensor ground
With ignition switch ON (II), or vehicle in ON mode: less than 0.2 V
23
LT BLU
TR
Detects in-car temperature sensor signal
With ignition switch ON (II), or vehicle in ON mode: about 1.0?4.0 V (depending on in-car temperature)
24
BLK
S 5V
Outputs sensor 5 V
With ignition switch ON (II), or vehicle in ON mode: about 5.0 V
25
PUR
TSUN
Detects sunlight sensor signal
With ignition switch ON (II), or vehicle in ON mode, and no sunlight or the sensor covered up: 3.56 V

With ignition switch ON (II), or vehicle in ON mode, and sunlight on the sensor: less than 3.56 V
26
RED
TEVA
Detects evaporator temperature sensor signal
With ignition switch ON (II), or vehicle in ON mode: about 1.0?4.0 V (depending on evaporator temperature)
27
BRN
TAM
Detects outside air temperature sensor signal
With ignition switch ON (II), or vehicle in ON mode: about 1.0?4.0 V (depending on outside air temperature)
28
WHT
RFD-P
Detects potentiometer signal of recirculation control motor (door position)
With ignition switch ON (II), or vehicle in ON mode: about 0.5?4.5 V (depending on recirculation control motor position)
29
Not used
Not used
???
???
30
BLU
B CAN-L
B CAN-L communication signal
With ignition switch ON (II), or vehicle in ON mode: pulses
31
Not used
Not used
???
???
32
PNK
B CAN-H
B CAN-H communication signal
With ignition switch ON (II), or vehicle in ON mode: pulses