2003 HONDA Pilot

Honda Pilot EX 2003 - BUZZERS, RELAYS & TIMERS

Honda Pilot EX 2003 BUZZERS, RELAYS & TIMERS LOCATION

Component	Component Location
Accessory Power Socket Relay	Passenger's underdash fuse/relay box.
A/C Compressor Clutch Relay	In underhood fuse/relay box.
Blower Motor Relay	In underhood fuse/relay box.
Condenser Fan Relay	In underhood fuse/relay box.
Daytime Running Lights Relay	Behind left side of dash. See Fig. 3 .
Fan Control Relay	In multi-relay box. See Fig. 2 .
Foglight Relay 1	Behind left side of dash.
Foglight Relay 2	Behind left side of front bumper.
Headlight Relay 1	In underhood fuse/relay box.
Headlight Relay 2	In underhood fuse/relay box.
Horn Relay	In underhood fuse/relay box.
Interior Light Relay	Behind left side of dash. See Fig. 3 .
Intermittent Wiper Relay	In multi-relay box. See Fig. 2 .
Low Beam Cut Relay	Behind left side of dash. See Fig. 3 .
PGM-FI Main Relay	Behind left side of dash, near steering column. See Fig. 3 .
Power Mirror Relay	In passenger's underdash fuse/relay box.
Radiator Fan Relay	In underhood fuse/relay box.
Rear Accessory Power Socket Relay	Behind left side of dash. See Fig. 3 .
Rear Blower Motor Relay	Under center console. See Fig. 5 .
Rear Window Defogger Relay	In passenger's underdash fuse/relay box.
Rear Window Wiper Intermittent Relay	In multi-relay box. See Fig. 2 .
Reverse Relay	On driver's underdash fuse/relay box.
Seat Heater Relay	In multi-relay box. See Fig. 2 .
Security Relay	Behind left side of dash.
Starter Cut Relay	On driver's underdash fuse/relay box.
Taillight Relay	Behind left side of dash. See Fig. 3 .
Turn Signal/Hazard Relay	On driver's underdash fuse/relay box.
VTM-4 Relay	Behind left side of dash. See Fig. 3 .

Honda Pilot EX 2003 - CIRCUIT PROTECTION DEVICES

Honda Pilot EX 2003 CIRCUIT PROTECTION DEVICES LOCATION

Component	Component Location
A/C Diode	Behind right side of dash. See Fig. 2 .
Auxiliary Fuse Box	At left front of engine compartment, to right of battery.
Driver's Underdash Fuse/Relay Box	Behind left end of dash. See Fig. 3 .
ELD Unit	In underhood fuse/relay box. See Fig. 2 .
Foglight Diode	Behind left side of dash.
Multi-Relay Box	At right front of engine compartment. See Fig. 2 .
Passenger's Underdash Fuse/Relay Box	Behind right kick panel. See Fig. 2 .
Security Diode 1 (LX)	Behind left side of dash.
Security Diode 2 (LX)	Behind left side of dash.
Security Diode 3 (LX)	Behind left side of dash.
Underhood Fuse/Relay Box	At right side of engine compartment. See Fig. 2 .

Honda Pilot EX 2003 - CONTROL UNITS

Honda Pilot EX 2003 CONTROL UNITS LOCATION

Component	Component Location
ABS Modulator Control Unit	At left side of engine compartment.
Antenna Amplifier	In left rear of roof.
Daytime Running Lights Control Unit	Behind left side of dash. See Fig. 3 .
Door Multiplex Control Unit	In driver door.
Driver's Multiplex Control Unit	Behind left end of dash.
ELD Unit	In underhood fuse/relay box. See Fig. 2 .
Immobilizer Control Unit Receiver	In steering column, on ignition key cylinder. See Fig. 3 .
Keyless Receiver Unit	Behind right side of glove box.
Navigation Unit	Under right front seat.
OPDS Unit	In right front seat.
Passenger's Multiplex Control Unit	Behind right kick panel.
Powertrain Control Module	Behind center of dash.
Power Window Control Unit	Inside driver door.
Radiator Fan Control Module	Behind left center of dash. See Fig. 3 .
Rearview Camera Control Unit	Under right front seat.
Security Control Unit (LX)	Behind left side of dash.
SRS Unit	Behind lower center of dash.
VTM-4 Control Unit	At left side of cargo area, behind rear side trim panel.

Honda Pilot EX 2003 - MOTORS

Honda Pilot EX 2003 MOTORS LOCATION

Component	Component Location
A/C Condenser Fan Motor	Behind right side of radiator.
Cruise Control Actuator	At right side of engine compartment, in front of underhood fuse/relay box. See Fig. 2 .
Front Air Mix Control Motor	On bottom of HVAC assembly. See Fig. 4 .
Front Blower Motor	Under right side of dash, on bottom of blower unit.
Front Mode Control Motor	On left end of HVAC assembly. See Fig. 4 .
Fuel Tank Unit	Under second row seat, below floor access panel.
Idle Air Control Valve	At rear of engine, under throttle body assembly. See Fig. 1 .
Radiator Fan Motor	Behind left side of radiator. See Fig. 2 .
Rear Air Mix Control Motor	Under center console panel. See Fig. 5 .
Rear Blower Motor	Under center console. See Fig. 5 .
Rear Mode Control Motor	Under center console panel. See Fig. 5 .
Rear Window Washer Motor	Behind right side of front bumper, on washer reservoir. See Fig. 2 .
Rear Window Wiper Motor	Behind liftgate trim panel.
Recirculation Control Motor	Behind glove box, on left side of blower unit. See Fig. 4 .
Windshield Washer Motor	Behind right side of front bumper, on washer reservoir. See Fig. 2 .
Windshield Wiper Motor	Left side of engine compartment.

Honda Pilot EX 2003 - SENDING UNITS & SENSORS

Honda Pilot EX 2003 SENDING UNITS & SENSORS LOCATION

Component	Component Location
ATF Temperature Sensor	On transaxle end cover.
Brake Light Failure Sensor	At right side of cargo area, on inside of rear side trim panel.
Camshaft Position Sensor A & B	On top front of engine.
Countershaft Speed Sensor	On top of transaxle. See Fig. 1 .
Crankshaft Position Sensor	At lower front of engine, next to timing belt drive pulley. See Fig. 1 .
Driver Side Impact Sensor	At base of left "B" pillar.
EGR Valve & EGR Valve Position Sensor	At rear of left cylinder head, on top of water passage.
Engine Coolant Temperature Sensor	At rear of engine, on top of water passage. See Fig. 1 .
Evaporator Temperature Sensor	In HVAC assembly, in evaporator fins. See Fig. 4 .
Front Passenger Side Impact Sensor	At base of right "B" pillar.
Fuel Tank Pressure Sensor	Under left side of floor.
In-Car Temperature Sensor	On dash, right of steering column. See Fig. 4 .
Intake Air Temperature Sensor	On rear intake manifold chamber. See Fig. 1 .
Knock Sensor	On top of engine block, under intake manifold.
Mainshaft Speed Sensor	On transaxle end cover.
Manifold Absolute Pressure Sensor	On top of throttle body assembly. See Fig. 1 .
Outside Air Temperature Sensor	On back of front bumper beam. See Fig. 2 .
Primary Heated Oxygen Sensor	On exhaust pipe, upstream of three-way catalytic converter.
Secondary Heated Oxygen Sensor	On three-way catalytic converter.
Sunlight Sensor	On center of dash. See Fig. 4 .
Throttle Position Sensor	On left side of throttle body assembly. See Fig. 1 .

Honda Pilot EX 2003 - SOLENOIDS & SOLENOID VALVES

Honda Pilot EX 2003 SOLENOIDS & SOLENOID VALVES LOCATION

Component	Component Location
A/T Clutch Pressure Control Solenoid Valve A	On transmission housing.
A/T Clutch Pressure Control Solenoid Valve B	On transmission housing.
A/T Clutch Pressure Control Solenoid Valve C	On transmission housing.
EVAP By-Pass Solenoid Valve	Under left side of floor.
EVAP Canister Purge Valve	On top rear of intake manifold. See Fig. 1 .
EVAP Canister Vent Shut Valve	Under left side of floor.
Left Side Clutch Solenoid	Under rear floor.
Shift Control Solenoid Valve A	On torque converter housing.
Shift Control Solenoid Valve B	On torque converter housing.
Shift Control Solenoid Valve C	On torque converter housing.
Shift Lock Solenoid	In steering column. See Fig. 3 .
Starter Solenoid	On starter motor assembly.
Torque Converter Clutch Solenoid Valve	On torque converter housing.
VTEC Solenoid Valve	At front of engine, on oil pump housing extension.

Honda Pilot EX 2003 - SWITCHES

Honda Pilot EX 2003 SWITCHES LOCATION

Component	Component Location
A/C Pressure Switch	At right side of engine compartment.
Brake Fluid Level Switch	Integral to brake fluid reservoir cap.
Brake Pedal Position Switch	At top of brake pedal arm. See Fig. 3 .
Driver Seat Belt Switch	Under driver seat.
Front Passenger Seat Belt Switch	Under front passenger seat.
Oil Pressure Switch	On front of engine, at top right of oil pump housing.
Parking Brake Switch	At top of parking brake pedal. See Fig. 3 .
Park Pin Switch	In steering column. See Fig. 3 .
Power Steering Pressure Switch	On power steering pressure line.
Radiator Fan Switch A	At rear of engine, on thermostat cover.
Radiator Fan Switch B	On front of left cylinder head.
Radiator Fan Switch C	On bottom lower left of radiator. See Fig. 2 .
Security Hood Switch	At center front of engine compartment. See Fig. 2 .
Transmission Range Switch	On transaxle end cover.
VTEC Oil Pressure Switch	On lower right front of engine.
VTM-4 Lock Switch	On center of dash.
Washer Fluid Level Switch	Behind right side of front bumper, on washer reservoir. See Fig. 2 .
3rd Clutch Pressure Switch	On transaxle end cover.
4th Clutch Pressure Switch	On transaxle end cover.

Honda Pilot EX 2003 - MISCELLANEOUS

Honda Pilot EX 2003 MISCELLANEOUS LOCATION

Component	Component Location
Antenna Amplifier	At rear left of roof.
Data Link Connector	Lower left side of dash. See Fig. 3 .
Front Blower Power Transistor	On bottom of blower unit, next to front blower motor. See Fig. 4 .
GPS Antenna	Behind upper center of dash, behind center panel.
Ignition Coils No. 1-6	On top of respective spark plug.
Interior Lights Noise Condenser	Behind right side of dash.
Junction Connector C103	At left side of engine compartment.
Junction Connector C104	At left side of engine compartment.
Junction Connector C105	At center of engine compartment.
Junction Connector C106	At center of engine compartment.
Multiplex Control Inspection Connector	Behind left side of dash. See Fig. 3 .
Navigation Service Check Connector	Under right front seat.
Rear Blower Power Transistor	Under center console. See Fig. 5 .
Rear Blower Resistor	Under center console. See Fig. 5 .
Rear Window Defogger Noise Condenser	Behind liftgate upper trim.
Test Tachometer Connector	At left side of engine compartment.

Honda Pilot EX 2003 - CONNECTORS

Honda Pilot EX 2003 CONNECTORS LOCATION

Component	Component Location
C101 (Gray, 14 Pin)	At left side of engine compartment.
C102 (Gray, 10 Pin)	At left side of engine compartment.
C151 (Gray, 8 Pin)	At left side of engine compartment.
C161 (Gray, 1 Pin)	At right side of engine compartment.
C201 (Light Blue, 16 Pin)	Under right side of dash. See Fig. 2 .
C202 (Brown, 7 Pin)	Under right side of dash. See Fig. 2 .
C203 (Gray, 20 Pin)	Behind right kick panel. See Fig. 2 .
C301 (Gray, 20 Pin)	Under left side of dash. See Fig. 3 .
C302 (Light Blue, 6 Pin)	Under left side of dash. See Fig. 3 .
C303 (Light Blue, 16 Pin)	Behind left kick panel.
C315 (Light Blue, 6 Pin)	In steering column cover. See Fig. 3 .
C401 (Light Blue, 24 Pin)	Under left side of dash. See Fig. 3 .
C402 (Gray, 14 Pin)	Under left side of dash. See Fig. 3 .
C403 (White, 6 Pin)	Under center of dash.
C501 (Gray, 4 Pin)	Under center of dash.
C502 (W/O Rear Entertainment System) (Gray, 8 Pin)	Under center console. See Fig. 5 .
C502 (W/Rear Entertainment System) (Gray, 14 Pin)	Under center console. See Fig. 5 .
C503 (Brown, 2 Pin)	Under center console. See Fig. 5 .
C504 (W/O Rear Entertainment System) (White, 13 Pin)	Under center console. See Fig. 5 .
C504 (W/Rear Entertainment System) (White, 21 Pin)	Under center console. See Fig. 5 .
C551 (White, 6 Pin)	Behind right kick panel.
C552 (Gray, 8 Pin)	Behind left kick panel.
C553 (White, 13 Pin)	Behind left kick panel.
C601 (Gray, 12 Pin)	Behind left kick panel. See Fig. 3 .
C602 (Light Blue, 24 Pin)	Behind left kick panel.
C603 (2 Pin)	Behind left kick panel.
C604 (LX) (Gray, 8 Pin)	At left "B" pillar.
C604 (EX & EX-L) (Gray, 10 Pin)	At left "B" pillar.
C605 (EX USA) (Gray, 6 Pin)	Under driver seat.
C605 (EX-L Canada) (10 Pin)	Under driver seat.
C610 (Gray, 6 Pin)	Under rear floor.
C651 (Light Blue, 24 Pin)	Behind right kick panel.
C652 (LX) (Gray, 8 Pin)	At right "B" pillar.
C652 (EX & EX-L) (Gray, 10 Pin)	At right "B" pillar.
C653 (Gray, 8 Pin)	Behind liftgate upper trim.
C654 (White, 12 Pin)	Behind liftgate upper trim.
C701 (Gray, 4 Pin)	Under left side of dash.
C702 (LX) (Gray, 4 Pin)	At left front door.
C702 (EX & EX-L) (Gray, 6 Pin)	At left front door.
C801 (Yellow, 2 Pin)	Under center of dash.
C802 (Yellow, 4 Pin)	Under center of dash.
C803 (Yellow, 4 Pin)	Under front passenger seat.
C851 (White, 6 Pin)	Behind liftgate trim panel.
C852 (Brown, 2 Pin)	Behind liftgate trim panel.
C853 (Light Blue, 6 Pin)	Behind liftgate trim panel.
C901 (Light Blue, 24 Pin)	Under center of console.
C951 (Gray, 2 Pin)	Under center of console.

Honda Pilot EX 2003 - GROUNDS

Honda Pilot EX 2003 GROUNDS LOCATION

Component	Component Location
G1	On left side of engine compartment, near battery.
G2	At front of engine compartment.
G101	At left rear of engine. See Fig. 1 .
G102	At right front of engine, near power steering pump. See Fig. 1 .
G151	At rear of transaxle.
G201	Behind right headlight. See Fig. 2 .
G301	At left front side of engine compartment, behind headlight.
G302	Below driver underdash fuse/relay box.
G401	Behind upper left end of dash. See Fig. 3 .
G501	Behind left end of dash.
G502	Behind left side of dash.
G503	Behind right end of dash.
G504	Behind center of dash.
G505	Behind lower center of dash.
G601	Below left front seat.
G602	Above left rear fender.
G651	Below right front seat.
G652	Above right rear fender.
G801	Below center console.