Honda Accord Electrical Troubleshooting Manual - part 28

See page
14-1.

Fuse 1

15A

Driver’s
Under-
dash
Fuse/
Relay
Box

ECM/PCM Power and Ground

HOT IN ON OR START

PGM-FI
Main
Relay

PHOTO 99
VIEW 22

RED/WHT

Fuse 46

15A

Under-
hood
Fuse/
Relay
Box

PHOTO 9
VIEW 68

HOT AT ALL TIMES

WHT/GRN

A17

PCM or ECM

See Circuit D04 ,
page 15-8.

BLK

YEL/BLK

(IGP1)

Power
input

YEL/BLK

Fuse 13

7.5A

BLU/ORN

Q10

YEL/BLK

HOT WITH ENGINE CRANKING

(IGP2)

Power
input

WHT/GRN

BLK

YEL/BLK

See page 10-4.

See page 10.

Fuel Supply System

See page 10-3.

Fuse 13

7.5A

Passenger’s
Under-dash
Fuse/Relay
Box

PHOTO 91
VIEW 67

HOT AT ALL TIMES

B21

(VBU)

Battery
input

C15

WHT/

YEL

WHT/

YEL

See page
10-12.

B20

Ground

(LG1)

BRN/BLK

BLK

Ground

(PG1)

BLK

B10

Ground

(PG2)

G101

BRN/BLK

B22

Ground

(LG2)

BRN/BLK

BLK

BRN/BLK

C101

PHOTO 34
VIEW 29

See page 14-1.

C103
(Terminals 8-11)

PHOTO 69
VIEW 39

BLK

See Circuit F28,
page 15-12.

–

23-1

Fuel and Emissions (L4)

)

(

13)

Fuse 46

15A

Under-hood
Fuse/Relay
Box

HOT AT ALL TIMES

PCM or ECM

BRN

(SCS)

Service
check input

WHT/GRN

GRY

A21

(K-LINE)

Scan tool
input/output

BLK

See page
14-8.

BRN/BLK

See page
14.

DLC

G101

G401

C401

GRY

WHT/GRN

BRN

BLK

See page 10.

DLC and MIL Circuits

Fuse 9

7.5A

Driver’s
Under-dash
Fuse/Relay
Box

HOT IN ON OR START

Gauge
Assembly

PHOTO 87
VIEW 61

YEL

B11

Gauges and
Indicators

MIL

GRN/ORN

A18

(MIL)

MIL control

See page
10-9.

YEL

See page 10-9.

LT BLU

(

)

See Circuit F29,
page 15-13.

(

)

(

12)

)

(

)

(

15)

Power for PGM tester
(B+, 4 amps max)

Signal ground for
communication
network

Ground
for PGM

K line for
off-board comm

= Non-SAE terminal number

used in Service Manual.

23-2

Fuel and Emissions (L4)

G101

See page
14-1.

Fuse 1

15A

Driver’s
Under-dash
Fuse/Relay
Box

PGM-FI System (All models)

HOT IN ON OR START

PGM-FI
Main
Relay

PHOTO 99
VIEW 22

RED/WHT

Fuse 46

15A

Under-hood
Fuse/Relay
Box

PHOTO 9
VIEW 68

HOT AT ALL TIMES

WHT/GRN

A17

PCM or ECM

See Circuit D04,
page 15-8.

BLK

(INJ4)

4 Fuel

Injectors

PHOTO 10

YEL

YEL/BLK

(INJ3)

BLU

YEL/BLK

(INJ2)

RED

YEL/BLK

B11

(INJ1)

BRN

YEL/BLK

Fuse 13

7.5A

BLU/ORN

Q10

YEL/BLK

HOT WITH ENGINE CRANKING

C103
(Terminals 1-7)

PHOTO 69
VIEW 39

Fuel injector control

WHT/GRN

BLK

YEL/BLK

See page 10-4.

See page 10.

GRN/YEL

BLK/YEL

Fuel Supply System

See Circuit D04,
page 15-8.

See page 10-3.

–

23-3

Fuel and Emissions (L4)

Fuse 6

15A

Driver’s
Under-dash
Fuse/Relay
Box

HOT IN ON OR START

PCM or ECM

C27

Sensor
input

(TPS)

C18

(SG2)

Sensor
ground

GRN/BLK

RED/BLK

YEL/BLU

TP
Sensor

PHOTO 16

See Circuit Z28,
page 15-18.

C26

Sensor
input

(ECT)

RED/WHT

GRN/BLK

ECT
Sensor

PHOTO 21

C25

Sensor
input

(IAT)

RED/YEL

GRN/BLK

IAT
Sensor

GRN/RED

A30

(EL)

ELD unit
input

C204

PHOTO 91
VIEW 52

BLK

ELD
Unit

See page
10-6.

BLK/YEL

GRN/BLK

See page 10-6.

BLK/YEL

C28

Reference
voltage

(VCC2)

See page 14-6.

BLK

G202

PHOTO 35

PCM or ECM

RED/GRN

MAP
Sensor

PHOTO 16

YEL/RED

C17

Sensor
input

(MAP)

C19

Reference
voltage

(VCC1)

See page 14.

PCM or
ECM

C30

(CYPM)

Sensor
ground

CYP
Sensor

BLK

YEL

C29

Sensor
input

(CYPP)

(CKPM)

Sensor
ground

CKP/TDC
Sensor

PHOTO 13

RED

Sensor
input

(CKPP)

C21

(TDCM)

Sensor
ground

WHT

C20

Sensor
input

(TDCP)

GRN

BLU

BRN/BLK

G101

)

(DX 2)

BLK

LT GRN

LT BLU

RED

WHT

GRN/WHT

See
Circuit
D46,
page
15-10.

Under-hood
Fuse/Relay
Box

PHOTO 9

(SG1)

Sensor
ground

YEL/BLU

Distributor

PHOTO 18

See page 10.

C103
(Terminals 12-14)

PHOTO 69
VIEW 39

GRN/BLK

Barometric
Pressure
Sensor

GRN/BLK

PGM-FI System (All models)