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2012 Chevrolet Colorado 2.9L Eng

AIR CONDITIONING

Tip: blower motor

Fig 1: Compressor Circuit

HOT W/ RUN/CRNK HOT AT
RELAY ENERGIZED ALL TIMES
UNDERHOOD
A/C FUSE BLOCK
IGN CMPRSR (LEFT FRONT SIDE
FUSE FUSE OF ENGINE COMPT)
15A 10A

A/C
85 30 RELAY

86 87

A/C CLTCH
DIODE

GROUND
BLK
DISTRIBUTION
SYSTEM

G103
(LOWER LEFT
SIDE OF
ENGINE)

BLK A

DK GRN B

A/C COMPRESSOR
CLUTCH
CLUTCH 53 DK GRN/WHT 459 (5.3L: FRONT OF
RLY CTRL X1 ENGINE)
(EXCEPT 5.3L: LEFT FRONT
37 GRY 2700 OF ENGINE)
5V REF
21 BLK 2751
LOW REF
57 RED/BLK 380
PRESS SENS
X3

ENGINE CONTROL
MODULE (ECM)
(RIGHT REAR OF
ENGINE COMPT)

A/C REFRIGERANT
PRESSURE SENSOR
(RIGHT REAR OF
330418 ENGINE COMPT)

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Fig 2: Manual A/C Circuit

HOT AT HOT W/ RUN/CRNK HOT AT
ALL TIMES RELAY ENERGISED ALL TIMES
UNDERHOOD
FUSE BLOCK
(LEFT FRONT SIDE IGN A/C CMPRSR
OF ENGINE COMPT) 85 30 IGN 3 FUSE FUSE
HVAC 15A 10A
RELAY

86 87
85 30 A/C
RELAY

BLWR A/C A/C

86 87
FUSE FUSE CLTCH
30A 10A DIODE

F10 X7 B X4 E9 F5 X7 B5 B6 F11 X2

GROUND
DISTRIBUTION
SYSTEM

A26 ORG 300 B

IGN 3 VOLTAGE G103
A42 PPL 1807 COMPUTER A/C (LOWER LEFT
SERIAL DATA POWER
A47 PPL 1807 DATA LINES A8 X201 COMPRESSOR SIDE OF ENGINE)
SERIAL DATA SYSTEM DISTRIBUTION CLUTCH
A43 DK GRN/WHT 762 SYSTEM
A/C REQ SIG (5.3L: FRONT
X1 OF ENGINE)
A (EXCEPT 5.3L:
BODY CONTROL
A9 X201 LEFT FRONT
MODULE (BCM)
OF ENGINE)
(BEHIND RIGHT
KICK PANEL)
DK GRN/WHT
J X203 A8 X200 TAN (OR BLK) A NCA
H X203
LOGIC
1 LT GRN
2 DK GRN/WHT YEL B NCA
3 BLK K BLK 1
ENGINE COOLANT
X203 BLOWER TEMPERATURE
MOTOR
(ECT) SENSOR
GRY GRY M (BELOW (ON LEFT REAR
RIGHT SIDE
OF ENGINE)
OF DASH)
EVAPORATOR 2 BLK B
TEMPERATURE
SENSOR
(LOWER RIGHT
SIDE OF DASH)
YEL A

ENGINE COOLANT
EXCEPT 5.3L TEMPERATURE
5.3L (ECT) SENSOR
(LEFT SIDE
OF ENGINE)
B PNK/WHT

M 410 YEL 55
SENS SIG
A LT GRN/BLK 2761 TAN (OR BLK) 35
LOW REF
X3
RECIRCULATION
459 DK GRN/WHT 53
ACTUATOR RLY CTRL
(RIGHT SIDE COMPUTER 1807 PPL 15
SERIAL DATA
OF DASH) B D F X203 DATA LINES 1807 PPL 16
SYSTEM SERIAL DATA
X1
380 RED/BLK 57
PRESS SENS SIG
7 DK GRN 71 2700 GRY 37
OFF BLWR MTR CTRL 5V REF
8 BRN 141 2751 BLK 21
IGN VOLTAGE LOW REF
9 LT GRN 66 X3
A/C REQ SIG
10 LT GRN/BLK 1647 ENGINE CONTROL
DR CTRL B
11 PNK/WHT 1648 MODULE (ECM)
DR CTRL A (RIGHT REAR
12
OF ENGINE COMPT)
13 GRY 8
DIMMER SW SIG INTERIOR LIGHTS SYSTEM
14 BLK 2050 BLK 1
GND
15 J200 GRY 2
LOGIC X1
RED/BLK 3
A DK GRN 71
(HVAC HARNESS, 14 CM FROM A/C REFRIGERANT
B BLK 2050 A5 BLK
RECIRCULATION ACTUATOR PRESSURE SENSOR
C X201 (RIGHT REAR OF
BREAKOUT TOWARD BLOWER
D MOTOR RESISTOR ASSEMBLY) ENGINE COMPT)
E ORG 52 G ORG J202 ORG C

HIGH
F LT BLU 72 E LT BLU LT BLU B
M2
M1
LOW G TAN 63 C TAN TAN A
OFF

BLOWER
MOTOR H YEL 60 A YEL YEL D
SWITCH X2 X203
BLOWER MOTOR
RESISTOR ASSEMBLY
HVAC CONTROL MODULE (LOWER RIGHT SIDE OF
DASH, NEAR BLOWER MOTOR)

F G
JX106
(RIGHT SIDE OF
ENGINE COMPT)

G106
330419

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