Heater Control Unit Inputs and Outputs
Cavity
Wire color
Signal
1
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2
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3
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4
PNK
B-CAN
INPUT/OUTPUT
5
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6
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7
RED
AUDIO HVAC SUBDISPLAY UNIT (CLK) *1
HVAC SUBDISPLAY UNIT (CLK) *2
OUTPUT
8
YEL
AUDIO HVAC SUBDISPLAY UNIT (SO) *1
HVAC SUBDISPLAY UNIT (SO) *2
INPUT
9
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10
YEL
POWER TRANSISTOR CONTROL
OUTPUT
11
BLU
BLOWER FEEDBACK
INPUT
12
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13
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14
LT BLU
IN-CAR TEMPERATURE SENSOR
OUTPUT
15
PUR
SUNLIGHT SENSOR
OUTPUT
16
RED
ILLUMI (−)
OUTPUT
17
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18
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19
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20
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21
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22
GRY
REAR WINDOW DEFOGGER RELAY
INPUT
23
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24
RED
SENSOR COMMON GROUND
INPUT
25
GRN
CONTROL MOTOR COMMON POWER
OUTPUT
26
LT GRN
CONTROL MOTOR COMMON SIGNAL
INPUT/OUTPUT
27
PNK
CONTROL MOTOR COMMON GROUND
INPUT
28
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29
BLK
GROUND (G503)
OUTPUT
30
PNK
OUTSIDE AIR TEMPERATURE SENSOR
OUTPUT
31
WHT
IG2 (Power)
INPUT
32
GRY
ILLUMI (+)
INPUT

*1:
With audio system
*2:
Without audio system