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Honda Accord Electrical Troubleshooting Manual - part 3

–

6-7

Under-hood Fuse/Relay Box

Connector-to-Fuse/Relay Box Index

Top View

Bottom View

Ref

Socket

Cavities

Connects to

Condenser fan relay

Radiator fan relay

A/C compressor clutch relay

ELD unit

T101

Engine wire harness

Battery positive cable

Headlight relay 1

Headlight relay 2

Diode

Not used

Horn relay

Blower motor relay

Right-side engine compartment wire harness

Circuit Index

6-8

Ground-to-Components Index

NOTE: All ground wires are BLK unless otherwise noted.

Ground

Page

Component or Circuit Grounded

14-13

Battery, Transmission housing

14-13

Engine block

G101 (L4)

and

14-1

DLC (BRN/BLK), EGR valve and EGR valve position sensor, IAC valve, Immobilizer
receiver unit (BRN/BLK), PCM or ECM (PG1 and PG2 are BLK; LG1 and LG2 are
BRN/BLK), PGM-FI main relay, Radiator fan switch, Shift control solenoid valves B
and C, Transmission range switch, VSS (M/T), VTEC oil pressure switch (BRN/BLK)

Shielding between the PCM or ECM and these components (all have BRAIDED wires):
CKP/TDC sensor, Countershaft speed sensor (A/T), CYP sensor, Knock sensor (LX,
EX), Mainshaft speed sensor (A/T), Primary and secondary HO2S

G101

(’98-’99

V6)

14-2

and

14-3

DLC (BRN/BLK), EGR valve and EGR valve position sensor, IAC valve, Immobilizer
receiver unit (BRN/BLK), PCM (PG1, and PG2 are BLK; LG1 and LG2 are BRN/BLK),
PGM-FI main relay, Radiator fan switches A and B, Shift control solenoid valves B and C,
Transmission range switch, VTEC oil pressure switch (BRN/BLK)

Shielding between the PCM and these components (all have BRAIDED wires): CKP
sensor, Countershaft speed sensor, Mainshaft speed sensor, Primary and secondary
HO2S, TDC sensors (1 and 2)

G101

(’00-’02

V6),

G102

(’00-’02

V6)

14-4

and

14-5

ABS/TCS control unit (BRN/BLK), DLC (BRN/BLK), EGR valve and EGR valve
position sensor, IAC valve, Ignition coils, Immobilizer receiver unit (BRN/BLK), PCM
(PG1 and PG2 are BLK; LG1 and LG2 are BRN/BLK), PGM-FI main relay, Radiator
fan switches A and B, Shift control solenoid valves B and C, Transmission range
switch, VTEC oil pressure switch (BRN/BLK)

Shielding between the PCM and these components (all have BRAIDED wires): CKP
sensor, Countershaft speed sensor, Mainshaft speed sensor, Primary and secondary
HO2S, TDC sensors (1 and 2)

G201

14-6

A/C condenser fan motor, Hood switch (EX), Radiator fan motor, Right front parking
light, Right front turn signal/side marker light, Right headlight (low beam), Washer fluid
level sensor (V6 - Canada), Windshield washer motor (V6)

G202

14-6

ABS fail-safe relay, Blower motor relay, Cruise control actuator (V6), ELD unit, PSP
switch (V6), Seat heater relay (Canada EX),

G203

(V6)

14-13

ABS/TCS modulator unit (’01-’02 V6), ABS pump motor (All except ’01-’02 V6)

G204

(V6)

14-13

ABS control unit (2 wires) (All except ’01-’02 V6), ABS/TCS control unit (2 wires)
(’01-’02 V6)

G205

(V6)

14-13

ABS control unit (2 wires) (All except ’01-’02 V6)

G301

14-7

Left front parking light, Left front turn signal/side marker light, Left headlight (low
beam), Washer fluid level sensor (L4 - Canada), Windshield washer motor (L4)

G302

14-7

Brake fluid level switch, Cruise control actuator (L4 All except USA DX), Intermittent
wiper relay, PSP switch (L4), Seat heater relay (’01-’02 V6 Canada EX), Windshield
wiper motor

G303 (L4)

14-13

ABS pump motor

G304 (L4)

14-13

ABS control unit (2 wires)

Circuit Index

–

6-9

Ground-to-Components Index

NOTE: All ground wires are BLK unless otherwise noted.

Ground

Page

Component or Circuit Grounded

G305 (L4)

14-13

ABS control unit (2 wires)

G401

14-8

and

14-9

Blower motor high relay (w/auto A/C), Blower power transistor (w/auto A/C), Climate
control unit (w/auto A/C), Clutch interlock switch (M/T), Clutch pedal position switch
(M/T w/cruise), Combination light switch (2 wires), DLC, Door multiplex control unit,
Driver’s door key cylinder switch, Driver’s door lock knob switch, Driver’s door lock
switch, Driver’s multiplex control unit, DRL control unit (Canada) (2 wires), Heater
control panel (w/manual A/C), Heater fan switch (w/manual A/C), Ignition key switch,
Radiator fan control module (V6), Turn signal/hazard relay, Windshield wiper/washer
switch

G501

14-10

Accessory power socket, Audio unit, Clock, Cruise control main switch (All except
’01-’02 V6), Cruise control/TCS switch (’01-’02 V6), Cruise control unit, Driver’s seat
heater switch (Canada EX), Front passenger’s seat belt switch (’00 Sedan), Front
passenger’s seat heater switch (Canada EX), Fuel gauge sending unit (’00-’02
Coupe), Fuel pump (’00-’02 Coupe), Gauge assembly, Glove box light, Moonroof close
relay, Moonroof open relay, Moonroof switch, OPDS unit (’00 Sedan with side air
bags), Park pin switch (A/T),

G502

14-13

Audio unit

G503

14-13

Driver’s multiplex control unit

G504

14-13

Passenger’s multiplex control unit

G551

14-11

Door multiplex control unit (2 wires), Driver’s seat belt switch, Driver’s seat heater
(Canada EX), Driver’s window motor, High mount brake light, Left power mirror
defogger (Canada), Left rear door lock knob switch (EX), Power mirror switch, Power
seat adjustment switch (2 wires)

G552

14-13

Fuel gauge sending unit (All except ’00-’02 Coupe), Fuel pump

G581

14-12

Accessory power socket relay, Driver’s and front passenger’s vanity mirror lights, Front
passenger’s door key cylinder switch, Front passenger’s door lock knob switch (EX),
Front passenger’s door lock switch, Front passenger’s power seat adjustment switch
(’01-’02 EX V6), Front passenger’s seat belt switch (’00-’02 Coupe, ’01-’02 Sedan),
Front passenger’s seat heater (Canada EX), OPDS unit (Coupe with side airbags),
Passenger’s multiplex control unit, Power window relay, Right power mirror defogger
(Canada), Right rear door knob switch (Sedan EX), Spotlights

G601

(Coupe)

14-14

Brake light failure sensor, Latch switch (EX), Left and right back-up lights, Left and
right inner brake light/taillights, Left and right rear side marker lights, Left and right
taillight assemblies, License plate light, Trunk key cylinder switch (EX), Trunk latch
switch, Trunk opener actuator (EX), Trailer lighting connector

G601

(Sedan)

14-15

Brake light failure sensor, Latch switch (EX), Left and right back-up lights, Left and
right brake light/outer taillights, Left and right inner taillights, Left and right rear turn
signal lights, License plate light, Trunk key cylinder switch (EX), Trunk latch switch,
Trunk lid opener actuator (EX), Trailer lighting connector

G801

14-13

MES connector (’00-’02 models), SRS unit (2 BLK or GRN wires)

Circuit Index