Honda Civic. Manual — part 754

Fig. 9: A/C Pressure Sensor System Description (1 Of 2)

The response of the A/C pressure sensor is shown in Fig. 10 .

Fig. 10: A/C Pressure Sensor System Description (2 Of 2)

Heating/Air Conditioning Door Positions

2008 Honda Civic EX

2006-08 HVAC Heating/Air Conditioning - Civic (All Except Hybrid)

Fig. 11: Identifying Heating/Air Conditioning Door Positions (1 Of 2)

2008 Honda Civic EX

2006-08 HVAC Heating/Air Conditioning - Civic (All Except Hybrid)

Fig. 12: Identifying Heating/Air Conditioning Door Positions (2 Of 2)

HVAC CONTROL UNIT INPUTS AND OUTPUTS

Fig. 13: Identifying HVAC Control Unit 24P Inputs And Outputs

HVAC CONTROL UNIT INPUTS AND OUTPUTS

Cavity Wire color

Signal

2008 Honda Civic EX

2006-08 HVAC Heating/Air Conditioning - Civic (All Except Hybrid)

CIRCUIT DIAGRAM

1

BLK

AIR MIX POTENTIAL +5V

OUTPUT

2

BRN

EVAPORATOR TEMPERATURE SENOR

OUTPUT

3

ORN

MODE 1

OUTPUT

4

LT GRN MODE 2

OUTPUT

5

PUR

MODE 3

OUTPUT

6

BLU

MODE 4

OUTPUT

7

BLU

BLOWER FEEDBACK

INPUT

8

YEL

POWER TRANSISTOR CONTROL

OUTPUT

9

-

-

-

10

-

-

-

11

BRN

A/C SIGNAL

OUTPUT

12

RED

ILLUMI (-)

OUTPUT

13

RED

SENSOR COMMON GROUND

INPUT

14

WHT

MODE VENT

OUTPUT

15

GRN

MODE DEF

OUTPUT

16

ORN

RECIRCULATE

INPUT

17

PUR

FRESH

INPUT

18

GRY

AIR MIX POTENTIAL

OUTPUT

19

LT BLU AIR MIX COOL

OUTPUT

20

PNK

AIR MIX HOT

OUTPUT

21

BLK

GROUND (G504)

OUTPUT

22

BRN

REAR WINDOW DEFOGGER RELAY

INPUT

23

LT GRN IG2 (Power)

INPUT

24

GRY

ILLUMI (+)

INPUT

2008 Honda Civic EX

2006-08 HVAC Heating/Air Conditioning - Civic (All Except Hybrid)