2001 HONDA Accord

Honda Accord DX 2001 - BUZZERS, RELAYS & TIMERS

Honda Accord DX 2001 BUZZERS, RELAYS & TIMERS LOCATION

Component	Component Location
ABS Fail-Safe Relay	In multi-relay box. See Fig. 7.
ABS Pump Motor Relay	In multi-relay box. See Fig. 7.
Accessory Power Socket Relay	In passenger's underdash fuse/relay box. See Fig. 6.
A/C Compressor Clutch Relay	In underhood fuse/relay box. See Fig. 7.
A/T Reverse Relay	In driver's underdash fuse/relay box. See Fig. 8.
Blower Motor High Relay	Behind glove box.
Blower Motor Relay	In underhood fuse/relay box. See Fig. 7.
Cigarette Lighter Relay	Under dash, right side of center console.
Condenser Fan Relay	In underhood fuse/relay box. See Fig. 7.
Foglight Relay No. 1	Behind left kick panel.
Foglight Relay No. 2	Attached to battery bracket.
Headlight Relay No. 1	In underhood fuse/relay box. See Fig. 7.
Headlight Relay No. 2	In underhood fuse/relay box. See Fig. 7.
High Beam Cut Relay (Canada)	Behind right kick panel. See Fig. 6.
Horn Relay	In underhood fuse/relay box. See Fig. 7.
Intermittent Wiper Relay	On rear of left strut tower. See Fig. 7.
Light Flasher Relay	Behind lower left dash.
Moon Roof Close Relay	Above left kick panel. See Fig. 8.
Moon Roof Open Relay	Above left kick panel. See Fig. 8.
PGM-FI ECU Main Relay	Behind left side of dash, left of steering column. See Fig. 8.
Power Window Relay	In passenger's underdash fuse/relay box. See Fig. 6.
Primary Heated Oxygen Sensor Relay (ULEV)	Behind right kick panel. See Fig. 6.
Radiator Fan Relay	In underhood fuse/relay box. See Fig. 7.
Rear Window Defogger Relay	In passenger's underdash fuse/relay box. See Fig. 6.
Seat Heater Relay (Canada) (Except 3.0L)	In multi-relay box. See Fig. 7.
Starter Cut Relay	In driver's underdash fuse/relay box. See Fig. 8.
Taillight Relay	Behind right kick panel. See Fig. 6.
TCS Relay (3.0L)	In multi-relay box. See Fig. 7.
Trunk Opener Relay	Behind lower left dash.
Turn Signal/Hazard Relay	In driver's underdash fuse/relay box. See Fig. 8.
Unlock Relay	Behind lower left dash.

Honda Accord DX 2001 - CIRCUIT PROTECTION DEVICES

Honda Accord DX 2001 CIRCUIT PROTECTION DEVICES LOCATION

Component	Component Location
Driver's Underdash Fuse/Relay Box	Behind left side of dash, behind left fuse box cover. See Fig. 8.
Foglight In-Line Fuse	Attached to battery bracket.
In-Line Fuse No. 1	Behind driver's lower dashboard cover.
In-Line Fuse No. 2	Behind driver's lower dashboard cover.
In-Line Fuse No. 3	Behind driver's lower dashboard cover.
Multi-Relay Box	On right side of engine compartment, on strut tower. See Fig. 7.
Passenger's Underdash Fuse/Relay Box	Behind right side of dash, behind right fuse box cover. See Fig. 6.
Underhood Fuse/Relay Box	On right rear corner of engine compartment, behind strut tower. See Fig. 7.

Honda Accord DX 2001 - CONTROL UNITS

Honda Accord DX 2001 CONTROL UNITS LOCATION

Component	Component Location
ABS Control Unit (2.3L)	Behind left kick panel. See Fig. 8.
ABS Control Unit (3.0L)	Behind right kick panel.
Climate Control Unit	Behind center of dash.
Cruise Control Unit	Behind left side of dash, left of steering column. See Fig. 8.
Daytime Running Lights (DRL) Control Unit (Canada)	Behind left side of dash, left of steering column. See Fig. 8.
Door Multiplex Control Unit	In master power window switch.
Driver's Multiplex Control Unit	Behind left fuse box cover. See Fig. 8.
ELD Unit	In underhood fuse/relay box. See Fig. 7.
Engine Control Module (ECM) (2.3L M/T)	Behind center of dash, forward of floor console. See Fig. 8.
Immobilizer Receiver Unit	On ignition lock. See Fig. 6.
Keyless or Keyless/Security Control Unit	Back of driver's dash lower panel.
OPDS Unit	In front passenger's seat back.
Passenger's Multiplex Control Unit	Behind right fuse box cover. See Fig. 6.
Powertrain Control Module (PCM) (2.3L A/T)	Behind center of dash, forward of floor console. See Fig. 8.
Powertrain Control Module (PCM) (3.0L)	Behind center of dash, forward of floor console. See Fig. 8.
Radiator Fan Control Module	Behind glove box.
SRS Unit	Behind center of dash, forward of floor console. See Fig. 8.

Honda Accord DX 2001 - MOTORS

Honda Accord DX 2001 MOTORS LOCATION

Component	Component Location
ABS Pump Motor	In ABS modulator unit.
Air Mix Control Motor	Below dash, on right side of heater unit.
Blower Motor	Behind right side of dash, in blower housing.
Condenser Fan Motor (2.3L)	Behind radiator, on left side.
Condenser Fan Motor (3.0L)	Behind radiator, on right side.
Cruise Control Actuator (2.3L)	On left side of engine compartment.
Cruise Control Actuator (3.0L)	On right side of engine compartment.
Mode Control Motor	On left side of heater unit.
Moon Roof Motor	Under headliner, above center of rear window.
Radiator Fan Motor (2.3L)	Behind radiator, on right side.
Radiator Fan Motor (3.0L)	Behind radiator, on left side.
Recirculation Control Motor	Behind glove box, on blower unit.
Windshield Washer Motor	On bottom of windshield washer fluid reservoir.
Windshield Wiper Motor	On left side of air scoop.

Honda Accord DX 2001 - SENDING UNITS & SENSORS

Honda Accord DX 2001 SENDING UNITS & SENSORS LOCATION

Component	Component Location
Brakelight Failure Sensor (Coupe)	Behind trim panel, on left rear of trunk.
Brakelight Failure Sensor (Sedan)	On left rear taillight assembly.
Countershaft Speed Sensor (2.3L)	On top left of transaxle. See Fig. 3.
Countershaft Speed Sensor (3.0L)	On top right of transaxle. See Fig. 5.
Crankshaft Position (CKP) Sensor (3.0L)	Behind crankshaft pulley, on oil pump. See Fig. 4.
Crankshaft Position/Top Dead Center (CKP/TDC) Sensor (2.3L)	Behind crankshaft pulley, on oil pump. See Fig. 1.
Cylinder Position (CYP) Sensor (2.3L)	In distributor assembly. See Fig. 1.
Cylinder Position/Top Dead Center (CYP/TDC) Sensor (3.0L)	Behind left camshaft pulley, on timing belt back cover. See Fig. 4.
Driver's Side Impact Sensor	Below driver's seat.
Engine Coolant Temperature (ECT) Sending Unit (2.3L)	On right rear of cylinder head.
Engine Coolant Temperature (ECT) Sending Unit (3.0L)	On rear of engine, on coolant passage.
Engine Coolant Temperature (ECT) Sensor (2.3L)	On right rear of cylinder head. See Fig. 1.
Engine Coolant Temperature (ECT) Sensor (3.0L)	On rear of engine, on left side of coolant passage. See Fig. 4.
Evaporator Temperature Sensor	Behind glove box, in evaporator unit.
Exhaust Gas Recirculation (EGR) Valve & EGR Valve Position Sensor (2.3L)	On rear of intake manifold.
Exhaust Gas Recirculation (EGR) Valve & EGR Valve Position Sensor (3.0L)	On rear of engine, on coolant passage.
Fuel Tank Pressure Sensor	On underside of vehicle, forward of fuel tank. See Fig. 9.
Heated Oxygen Sensor (Primary HO2S) (Sensor 1) (2.3L)	On exhaust manifold. See Fig. 1.
Heated Oxygen Sensor (Primary HO2S) (Sensor 1) (3.0L)	On front exhaust pipe.
Heated Oxygen Sensor (Secondary HO2S) (Sensor 2) (2.3L)	On TWC converter.
Heated Oxygen Sensor (Secondary HO2S) (Sensor 2) (3.0L)	On TWC converter.
In-Car Temperature Sensor (A/C)	In left lower dash panel, right of steering column.
Intake Air Temperature (IAT) Sensor (2.3L)	On front of intake manifold. See Fig. 1.
Intake Air Temperature (IAT) Sensor (3.0L)	On right side of intake manifold. See Fig. 4.
Knock Sensor (KS) (2.3L)	On lower left side of engine, next to oil filter. See Fig. 1 and Fig. 2.
Mainshaft Speed Sensor (2.3L)	On right rear of transaxle. See Fig. 3.
Mainshaft Speed Sensor (3.0L)	On left rear transaxle. See Fig. 5.
Manifold Absolute Pressure (MAP) Sensor (2.3L)	On top of throttle body. See Fig. 1.
Manifold Absolute Pressure (MAP) Sensor (3.0L)	On top of throttle body. See Fig. 4.
Outside Air Temperature Sensor	Below center of front bumper.
Passenger's Side Impact Sensor	Below passenger's seat.
Sunlight Sensor	On center front of dash.
Throttle Position (TP) Sensor (2.3L)	On throttle body. See Fig. 1.
Throttle Position (TP) Sensor (3.0L)	On throttle body. See Fig. 4.
Vehicle Speed Sensor (VSS) (M/T)	On top left of transaxle. See Fig. 1.
Wheel Sensors (Front & Rear) (4)	On each front & rear suspension knuckle.

Honda Accord DX 2001 - SOLENOIDS & SOLENOID VALVES

Honda Accord DX 2001 SOLENOIDS & SOLENOID VALVES LOCATION

Component	Component Location
ABS Modulator Unit (2.3L)	On left front of engine compartment.
ABS Modulator Unit (3.0L)	On right front of engine compartment.
A/T Clutch Pressure Control Solenoid Valve A/B Assembly (2.3L)	On right side of transaxle. See Fig. 3.
A/T Clutch Pressure Control Solenoid Valve A/B Assembly (3.0L)	On top rear of transaxle. See Fig. 5.
Engine Mount Control Solenoid Valve (2.3L)	On center rear of engine compartment.
Engine Mount Control Solenoid Valve (3.0L)	On left rear of engine compartment. See Fig. 4.
EVAP By-Pass Solenoid Valve	On underside of vehicle, next to EVAP control canister. See Fig. 9.
EVAP Canister Purge Valve (2.3L)	On right side of intake manifold. See Fig. 1.
EVAP Canister Purge Valve (3.0L)	On left rear of engine compartment. See Fig. 4.
EVAP Canister Vent Shut Valve	On underside of vehicle, on EVAP control canister. See Fig. 9.
Exhaust Gas Recirculation (EGR) Valve & EGR Valve Position Sensor (2.3L)	On rear of intake manifold.
Exhaust Gas Recirculation (EGR) Valve & EGR Valve Position Sensor (3.0L)	On rear of engine, on coolant passage.
Idle Air Control (IAC) Valve (2.3L)	On left side of intake manifold.
Idle Air Control (IAC) Valve (3.0L)	On bottom of throttle body.
Key Interlock Solenoid	On steering lock assembly.
Lock-Up Control Solenoid Valve & Shift Control Solenoid Valve "A" Assembly (2.3L)	On right front of transaxle. See Fig. 3.
Lock-Up Control Solenoid Valve & Shift Control Solenoid Valve "A" Assembly (3.0L)	On top front of transaxle. See Fig. 5.
Shift Control Solenoid Valve "B" (2.3L)	On right side of transaxle. See Fig. 3.
Shift Control Solenoid Valve "B" (3.0L)	On left side of transaxle. See Fig. 5.
Shift Control Solenoid Valve "C" (2.3L)	On right side of transaxle. See Fig. 3.
Shift Control Solenoid Valve "C" (3.0L)	On left side of transaxle. See Fig. 5.
Shift Lock Solenoid	Under floor console, on bottom right of gear selector lever.
VTEC Solenoid Valve (2.3L)	On left rear of cylinder head.
VTEC Solenoid Valve (3.0L)	On lower right of engine.

Honda Accord DX 2001 - SWITCHES

Honda Accord DX 2001 SWITCHES LOCATION

Component	Component Location
A/C Pressure Switch	On receiver-drier.
Back-Up Light Switch (M/T)	On top of transaxle, near starter motor.
Brake Fluid Level Switch	In brake fluid reservoir cap.
Brake Pedal Position Switch	On brake pedal support.
Clutch Interlock Switch (M/T)	On clutch pedal support.
Clutch Pedal Position Switch (M/T)	On clutch pedal support.
Engine Oil Pressure Switch (2.3L)	On left side of engine, above oil filter.
Engine Oil Pressure Switch (3.0L)	On lower right front of engine.
Key Interlock Switch	On steering lock assembly.
Parking Brake Switch	Mounted under parking brake lever.
Parking Pin Switch	Below console, on shift lever.
Power Steering Pressure (PSP) Switch (2.3L)	Above left drive axle, on power steering line. See Fig. 1.
Power Steering Pressure (PSP) Switch (3.0L)	In right rear of engine compartment, on power steering line. See Fig. 4.
Radiator Fan Switch (2.3L)	On thermostat housing.
Radiator Fan Switch "A" (3.0L)	On thermostat cover.
Radiator Fan Switch "B" (3.0L)	Behind timing belt back cover, on front of left cylinder head.
Seat Belt Switch	On driver's seat belt buckle.
Transmission Range Switch (2.3L)	On rear of transaxle. See Fig. 3.
Transmission Range Switch (3.0L)	On rear of transaxle. See Fig. 5.
VTEC Oil Pressure Switch (2.3L)	On left rear of cylinder head.
VTEC Oil Pressure Switch (3.0L)	On lower right of engine.
2nd Clutch Pressure Switch (2.3L)	On left front of transaxle. See Fig. 3.
2nd Clutch Pressure Switch (3.0L)	On right front of transaxle. See Fig. 5.
3rd Clutch Pressure Switch (2.3L)	On right rear of transaxle. See Fig. 3.
3rd Clutch Pressure Switch (3.0L)	On left rear of transaxle. See Fig. 5.

Honda Accord DX 2001 - MISCELLANEOUS

Honda Accord DX 2001 MISCELLANEOUS LOCATION

Component	Component Location
Blower Power Transistor (Automatic A/C)	On bottom of blower unit.
Blower Resistor	At blower motor.
Data Link Connector (DLC)	On lower left of dash, above the kick panel.
Disarm Switch Connector	Behind lower left side of dash.
Foglight Diode	Behind driver's lower dashboard cover.
Homelink Unit	On center of roof, in spotlight assembly.
In-Line Diode No. 1 (Courtesy Lights)	In driver's underdash fuse/relay box.
In-Line Diode No. 2 (Courtesy Lights)	In driver's underdash fuse/relay box.
In-Line Diode No. 3 (Courtesy Lights)	In passenger's underdash fuse/relay box.
In-Line Diode No. 4 (Courtesy Lights)	In passenger's underdash fuse/relay box.
Junction Connector C103 (2.3L)	At underside of vehicle, rear of engine.
Junction Connector C105 (3.0L)	Below right side of dash.
Junction Connector C106 (3.0L)	At lower left rear of engine compartment.
Junction Connector C107 (3.0L)	At lower left rear of engine compartment.
Junction Connector C108 (3.0L)	Below right side of dash.
Left Fuse Box Cover	On left end of dash.
Right Fuse Box Cover	On right end of dash.
Seat Belt Tensioner (Left)	At base of left "B" pillar.
Seat Belt Tensioner (Right)	At base of right "B" pillar.
Service Check Connector	Behind right side of dash, above kick panel.
Siren (W/ Security)	Behind left side of front bumper.
SRS Memory Erase Connector	Behind driver's lower dashboard cover.
Test Tachometer Connector (2.3L)	Near battery.
Test Tachometer Connector (3.0L)	On left rear of engine compartment.
Window Antenna Coil	Under rear shelf.

Honda Accord DX 2001 - CONNECTORS

Honda Accord DX 2001 CONNECTORS LOCATION

Component	Component Location
C101 (Gray, 10-Pin)	At right rear side of engine compartment.
C102 (2.3L) (A/T) (Gray, 14-Pin)	At right rear side of engine compartment.
C102 (2.3L) (M/T) (California) (Gray, 10-Pin)	At right rear side of engine compartment.
C102 (2.3L) (M/T) (Except California) (Gray, 8-Pin)	At right rear side of engine compartment.
C103 (Gray, 14-Pin)	At left rear side of engine compartment.
C104 (Gray, 10-Pin)	At left rear side of engine compartment.
C201 (Blue, 16-Pin)	Behind glove box.
C202 (Brown, 7-Pin)	Behind glove box.
C204 (Green, 22-Pin)	Behind right fuse box cover.
C301 (Gray, 20-Pin)	Behind driver's dash, lower cover.
C302 (2.3L) (Gray, 8-Pin)	Behind driver's dash, lower cover.
C302 (3.0L) (Gray, 16-Pin)	Behind driver's dash, lower cover.
C401 (Blue, 22-Pin)	Under left side of dash.
C402 (Gray)	Behind driver's dash, lower cover.
C404 (Gray, 10-Pin)	Behind driver's dash, lower cover.
C501 (Except Canada EX) (Gray, 18-Pin)	Above left kick panel.
C501 (Canada EX) (Gray, 20-Pin)	Above left kick panel.
C502 (Brown, 7-Pin)	Above left kick panel.
C503 (Sedan) (Yellow, 2-Pin)	Behind driver's dash, lower cover.
C503 (Coupe) (Yellow, 8-Pin)	Behind driver's dash, lower cover.
C505 (Yellow, 6-Pin)	Below front of center console.
C551 (Gray, 10-Pin)	Underside of driver's seat.
C553 (Gray, 10-Pin)	In left center pillar.
C554 (Gray, 12-Pin)	At left side of trunk.
C581 (Gray, 10-Pin)	In right center pillar.
C582 (Light Blue, 6-Pin)	Behind right kick panel.
C701 (Gray, 10-Pin)	At right side of front passenger's seat.

Honda Accord DX 2001 - GROUNDS

Honda Accord DX 2001 GROUNDS LOCATION

Component	Component Location
G1 (2.3L)	At right front side of engine compartment. See Fig. 1.
G1 (3.0L)	At left front side of engine compartment. See Fig. 4.
G2 (2.3L)	At left side of engine compartment. See Fig. 1.
G2 (3.0L)	At left side of engine compartment. See Fig. 4.
G101 (2.3L)	At right rear side of engine. See Fig. 1.
G101 (3.0L)	At rear of engine. See Fig. 4.
G102 (3.0L)	At right front side of engine. See Fig. 4.
G201 (2.3L)	At right side of engine compartment. See Fig. 1.
G201 (3.0L)	At right front side of engine compartment. See Fig. 4.
G202 (2.3L)	At right side of engine compartment. See Fig. 1.
G202 (3.0L)	At right rear side of engine compartment. See Fig. 4.
G203 (3.0L)	At right front side of engine compartment. See Fig. 4.
G204 (3.0L)	Behind right kick panel.
G205 (3.0L)	Behind right kick panel.
G301 (2.3L)	At left front side of engine compartment. See Fig. 1.
G301 (3.0L)	At left front side of engine compartment. See Fig. 4.
G302 (2.3L)	At left side of engine compartment. See Fig. 1.
G302 (3.0L)	At left side of engine compartment. See Fig. 4.
G303 (2.3L)	At left front side of engine compartment. See Fig. 1.
G304 (2.3L)	Behind left kick panel.
G305 (2.3L)	Behind ABS control unit.
G401	Behind driver's dash, lower cover.
G501	Behind dash center panel.
G502	Behind dash center panel.
G503	Behind left fuse box cover.
G504	Behind passenger's dash, lower cover.
G551	Below driver's seat, under carpet.
G552	At front of trunk.
G581	Below front passenger's seat, under carpet.
G601 (Coupe)	At left rear side of trunk.
G601 (Sedan)	At left side of trunk.
G801	Below front of center console.