Climate Control Unit Inputs and Outputs

WARNING: This page is about a different car, the 2009 Acura MDX, 2008 Acura MDX, and 2007 Acura MDX. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Identifying Climate Control Unit Connector A (40P) Terminals

Courtesy of AMERICAN HONDA MOTOR CO., INC.

CONNECTOR A

CLIMATE CONTROL UNIT INPUTS AND OUTPUTS - CONNECTOR A

Cavity

Wire color

Signal

WHT

BACKUP

INPUT

YEL

NAVIGATION UNIT (SI)⁽¹⁾

INPUT

YEL

IG2 (Power)

INPUT

LT GRN

B-CAN

INPUT/OUTPUT

LT BLU

IN-CAR TEMPERATURE SENSOR

OUTPUT

GRY

COMMON POTENTIAL 5V

OUTPUT

RED

SENSOR COMMON GROUND

INPUT

BLU

FRONT BLOWER FEEDBACK

INPUT

RED

FRONT POWER TRANSISTOR CONTROL

OUTPUT

PUR

DRIVER'S AIR MIX POTENTIAL

INPUT

PNK

DRIVER'S AIR MIX HOT

OUTPUT

LT BLU

DRIVER'S AIR MIX COOL

OUTPUT

LT GRN

PASSENGER'S AIR MIX HOT

OUTPUT

YEL

PASSENGER'S AIR MIX COOL

OUTPUT

GRN

FRONT MODE DEF

OUTPUT

ORN

FRONT MODE VENT

OUTPUT

YEL

FRESH

OUTPUT

ORN

RECIRCULATE

OUTPUT

BLU

NAVIGATION UNIT(CLK)⁽¹⁾

OUTPUT

RED

NAVIGATION UNIT (SO)⁽¹⁾

OUTPUT

LT BLU

ILLUMK+)

INPUT

BRN

FRONT EVAPORATOR TEMPERATURE SENSOR

OUTPUT

PUR

ACC

INPUT

LT GRN

A/C PRESSURE SENSOR

OUTPUT

YEL

HUMIDITY SENSOR

OUTPUT

PNK

OUTSIDE AIR TEMPERATURE SENSOR

OUTPUT

PUR

SUNLIGHT SENSOR

OUTPUT

BLU

PASSENGER'S AIR MIX POTENTIAL

INPUT

WHT

FRONT MODE CONTROL MODE 1

OUTPUT

LT GRN

FRONT MODE CONTROL MODE 2

OUTPUT

PUR

FRONT MODE CONTROL MODE 3

OUTPUT

BLU

FRONT MODE CONTROL MODE 4

OUTPUT

WHT

RECIRCULATION CONTROL MODE 1

OUTPUT

BLK

RECIRCULATION CONTROL MODE 2

OUTPUT

BLK

GROUND (G506)

OUTPUT

GRN

RECIRCULATION CONTROL MODE 3

OUTPUT

⁽¹⁾	With navigation system

Fig 1: Identifying Climate Control Unit Connector B (14P) Terminals

Courtesy of AMERICAN HONDA MOTOR CO., INC.

CONNECTOR B

CLIMATE CONTROL UNIT INPUTS AND OUTPUTS - CONNECTOR B

Cavity	Wire color	Signal
1	GRN	REAR AIR MIX COOL	OUTPUT
2	PNK	REAR AIR MIX HOT	OUTPUT
3	YEL	REAR MODE HEAT	INPUT
4	BLK	REAR MODE VENT	INPUT
5	PUR	REAR AIR MIX POTENTIAL	INPUT
6	LT BLU	REAR EVAPORATOR TEMPERATURE SENSOR	OUTPUT
8	BLU	AUDIO UNIT (HVAC BUS)	INPUT/OUTPUT
11	ORN	REAR CLIMATE CONTROL PANEL (A/C BUS RX)	INPUT/OUTPUT
12	GRN	REAR CLIMATE CONTROL PANEL (A/C BUS TX)	INPUT/OUTPUT
13	RED	REAR BLOWER FEEDBACK	INPUT
14	BLU	REAR POWER TRANSISTOR CONTROL	OUTPUT