Honda Ridgeline. Manual - part 395

０５

21-16

Heating/Air Conditioning

System Description (cont’d)

HOT

COOL

(HEAT/DEF)

(DEF)

＋

０６

HVAC Control Unit Inputs and Outputs

Cavity

Wire color

Signal

21-17

HVAC CONTROL UNIT 30P CONNECTOR

1

BLK

GROUND (G402)

OUTPUT

2

RED/BLK

TAILLIGHT RELAY

INPUT

3

RED

GAUGE ASSEMBLY

OUTPUT

8

PNK

OUTSIDE AIR TEMPERATURE SENSOR

OUTPUT

11

LT BLU

B-CAN

INPUT/OUTPUT

12

YEL

A/C PRESSURE SWITCH

INPUT

13

GRN/RED

RECIRCULATE

INPUT

14

GRN/WHT

FRESH

INPUT

15

BLK/YEL

IG2 (Power)

INPUT

16

YEL/BLU

MODE OFF

OUTPUT

17

YEL/RED

MODE VENT

OUTPUT

18

GRN

AIR MIX COOL

OUTPUT

19

PNK/BLU

AIR MIX HOT

OUTPUT

20

RED/BLK

SENSOR COMMON GROUND

INPUT

22

GRY

AIR MIX POTENTIAL

5

OUTPUT

23

PNK/BLK

AIR MIX POTENTIAL

OUTPUT

24

BRN

EVAPORATOR TEMPERATURE SENSOR

OUTPUT

25

BLU/RED

BLOWER FEEDBACK

INPUT

26

BLU/YEL

POWER TRANSISTOR CONTROL

OUTPUT

27

YEL/GRN

MODE 4

OUTPUT

28

WHT/BLU

MODE 3

OUTPUT

29

RED/BLU

MODE 2

OUTPUT

30

RED/YEL

MODE 1

OUTPUT

Wire side of female terminals

＊９０

ＳＪＣ８ＡＨ６Ｇ２４１００００００００ＥＡＡＴ００

−

−

−

−

−

−

21-18

Heating/Air Conditioning

Circuit Diagram

C27

C14

C36

TW2

TW

5 V

RED/WHT

GRN/YEL

GRN/RED

D5

D2

E9

F10

E15

E8

D1

E7

D16

D7

N20

A4

G1

* : In the under hood fuse/relay box

BLK/YEL

A1

B1

RED

WHT

B8

A36

B6

BRN/YEL

LT BLU

BLU

J8

H3

BLU/RED

YEL

BLK

G202

1

4

A

B

PCM

FAN HI

A5

A4

GRN/YEL

GRN

GRN

BLU/BLK

BLU/BLK

GRN

BLU/YEL

(30 A)

No.20

BLU/YEL

YEL

YEL

BLU/YEL

BLU/YEL

BLK

G201

1

5

2

4

3

BLK/YEL

3

1

2

4

B

YEL/WHT

3

3

4

4

1

2

1

2

YEL/WHT

BLK/YEL

No.23 (7.5 A)

A37

PD SW

FAN LO

ACC L

A14

YEL/GRN

A

IG2 HOT in ON (II)

IGNITION SWITCH

3

4

2

1

3

2

RED/GRN

BAT

IG2

No.30 (7.5 A)

YEL

UNDER HOOD FUSE/RELAY BOX

BLU/BLK

WHT/RED

12 V

3

4

No.12 (7.5 A)

G202

BLK

WHT/BLU

1

2

BLK/YEL

1

No.23 (IG) (50 A)

No.21 (40 A)

No.19 (30 A)

RED

WHT

No.22 (BAT) (120 A)

BATTERY

G201

1

2

1

2

BLU/RED

BLK

UNDER DASH
FUSE/RELAY BOX

A/C
COMPRESSOR
CLUTCH RELAY

BLOWER
MOTOR RELAY

RADIATOR
FAN
MOTOR

FAN
CONTROL
RELAY

A/C
CONDENSER
FAN MOTOR

A/C
COMPRESSOR
CLUTCH

A/C
PRESSURE
SWITCH

PGM FI
MAIN RELAY 1

A/C
CONDENSER
FAN RELAY

RADIATOR
FAN RELAY

A/C
DIODE

RELAY
CONTROL
MODULE *

GAUGE
CONTROL
MODULE

CAN
HI

CAN
LO

A/C PRESSURE SWITCH A :
The high low switch opens when
the refrigerant pressure is below
196 kPa (2.0 kgf/cm2, 28 psi) or above
3,140 kPa (32.0 kgf/cm , 455 psi)
A/C PRESSURE SWITCH B :
The middle switch closes when
the refrigerant pressure is above
1,520 kPa (15.5 kgf/cm , 220 psi)

AUXILIARY
UNDER HOOD
RELAY BOX

ENGINE COOLANT
TEMPERATURE
(ECT) SENSOR 1

ENGINE COOLANT
TEMPERATURE
(ECT) SENSOR 2

2

2

＊９０

−

−

−

−

−

−

−

21-19

: Communication line

BLK/YEL

RED/BLK

RED/BLK

PNK

2

1

8

RED/BLK

RED/BLK

11

12

YEL

LT BLU

RED

RED/BLK

WHT/BLU

BLK/YEL

1

5

1

13

14

20

27

28

29

30

16

17

18

19

23

22

24

26

25

3

2

15

BLK/YEL

LIGHTS

12 V

BLU/BLK

G402

1

2

HVAC CONTROL UNIT

BLK

7

3

2

1

1

6

2

5

4

5

7

5 V

BLK

GRN/RED

GRN/WHT

WHT/BLU

RED/BLU

YEL/BLU

RED/YEL

YEL/RED

GRN

PNK/BLU

PNK/BLK

GRY

BRN

BLU/YEL

1

2

YEL/GRN

3

RED/BLK

7

WHT/BLU

M VENT

MODE1

M DEF

MODE2

MODE3

MODE4

S COM

S5V

AMD P

M HOT

M COOL

S COM

REC

FRS

IG2

BLU/RED

1

2

4

3

TAILLIGHT
RELAY

BLOWER
MOTOR

POWER
TRANSISTOR

EVAPORATOR
TEMPERATURE SENSOR

AIR MIX
CONTROL
MOTOR

MODE
CONTROL
MOTOR

RECIRCULATION
CONTROL
MOTOR

OUTSIDE AIR
TEMPERATURE SENSOR

DRIVING
CIRCUIT

GAUGE
ASSEMBLY