1998 HONDA Prelude

Honda Prelude 1998 - BUZZERS, RELAYS & TIMERS

Honda Prelude 1998 BUZZERS, RELAYS & TIMERS

Component	Component Location
ABS Fail-Safe Relay	Above underdash fuse/relay box, on bracket. See Fig. 6 .
ABS Pump Motor Relay	In underhood fuse/relay box. See Fig. 4 .
A/C Compressor Clutch Relay	In left front corner of engine compartment, on bracket. See Fig. 4 .
Accessory Socket Relay	Above underdash fuse/relay box, on bracket. See Fig. 6 .
A/T Reverse Relay	Above underdash fuse/relay box, on bracket. See Fig. 6 .
ATTS Fail-Safe Relay (Type SH)	Above underdash fuse/relay box, on bracket. See Fig. 6 .
Blower Motor Relay	On front of underdash fuse/relay box. See Fig. 6 .
Condenser Fan Relay	In left front corner of engine compartment, on bracket. See Fig. 4 .
Dimmer Relay	In underhood fuse/relay box. See Fig. 4 .
Foglight Relay (2)	Behind driver's left air vent.
Headlight Relay	In underhood fuse/relay box. See Fig. 4 .
Horn Relay	Above underdash fuse/relay box, on bracket. See Fig. 6 .
Light Flasher Relay	On back of lower left dash panel.
Moon Roof Close Relay	On front of underdash fuse/relay box. See Fig. 6 .
Moon Roof Open Relay	On front of underdash fuse/relay box. See Fig. 6 .
PGM-FI Main Relay	Behind dash, left of steering column. See Fig. 6 .
Power Window Relay	On front of underdash fuse/relay box. See Fig. 6 .
Radiator Fan Relay	In underhood fuse/relay box. See Fig. 4 .
Rear Window Defogger Relay	On front of underdash fuse/relay box. See Fig. 6 .
Seat Heater Relay (Canada)	Above underdash fuse/relay box, on bracket. See Fig. 6 .
Shift Lock Relay (A/T)	Below center console, forward of gear shift lever. See Fig. 7 .
Starter Cut Relay	Behind dash, left of steering column. See Fig. 6 .
Turn Signal/Hazard Relay	On front of underdash fuse/relay box. See Fig. 6 .
Unlock Relay	On lower left dash panel.
Windshield Wiper Intermittent Relay	On rear of left strut tower. See Fig. 4 .

Honda Prelude 1998 - CIRCUIT PROTECTION DEVICES

Honda Prelude 1998 CIRCUIT PROTECTION DEVICES

Component	Component Location
A/C Diode	Above left side of front passenger's footrest, taped to harness.
ATTS In-Line Fuse (Type SH)	On underdash fuse/relay box.
Diode No. 1 (Foglights)	Behind dash, above left kick panel, taped to harness.
Diode No. 2 (Foglights)	Behind dash, above left kick panel, taped to harness.
Diode No. 3 (Foglights)	Behind dash, above left kick panel, taped to harness.
Foglight In-Line Fuse	Above underdash fuse/relay box, taped to harness.
Security Diode (2)	Behind driver's left air vent.
Security In-Line Fuse Holder No. 1	Behind dash, above left kick panel.
Security In-Line Fuse Holder No. 2	Behind lower dash panel, left of steering column, taped to harness.
Security In-Line Fuse Holder No. 3	Behind lower dash panel, left of steering column, taped to harness.
Shift Lock Diode	Under front passenger's footrest, taped to ECM breakout.
SRS Fuse Block	On front of underdash fuse/relay box. See Fig. 6 .
Turn Signal Light Diode	Above underdash fuse/relay box, taped to harness.
Underdash Fuse/Relay Box	Behind left kick panel. See Fig. 6 .
Underhood Fuse/Relay Box	On right rear corner of engine compartment. See Fig. 4 .

Honda Prelude 1998 - CONTROL UNITS

Honda Prelude 1998 CONTROL UNITS

Component	Component Location
ABS Control Unit	Behind right kick panel. See Fig. 7 .
ABS Modulator Unit	In left front of engine compartment.
ATTS Control Unit (Type SH)	On underside of front passenger's footrest. See Fig. 7 .
Cruise Control Unit	Behind dash, above accelerator pedal. See Fig. 6 .
Daytime Running Lights (DRL) Control Unit (Canada)	Behind dash, above accelerator pedal. See Fig. 6 .
Engine Control Module (ECM)	On underside of front passenger's footrest. See Fig. 7 .
Immobilizer Control Unit	Behind dash, on left side of steering column. See Fig. 6 .
Multiplex Control Unit (Door)	In driver's door. See Fig. 8 .
Multiplex Control Unit (Driver's)	On rear of underdash fuse/relay box. See Fig. 6 .
Multiplex Control Unit (Passenger's)	Behind right kick panel. See Fig. 7 .
Security Control Unit	Behind dash, above accelerator pedal.
SRS Unit	Below center of dash. See Fig. 7 .
Transmission Control Module (TCM)	On underside of front passenger's footrest. See Fig. 7 .

Honda Prelude 1998 - MOTORS

Honda Prelude 1998 MOTORS

Component	Component Location
ABS Pump Motor	On ABS modulator unit.
Blower Motor	Below right side of dash.
Condenser Fan Motor	Behind left side of radiator.
Door Lock Assembly (2)	In rear of respective door.
Mode Control Motor	Behind dash, on left side of heater assembly.
Moon Roof Motor	On rear underside of ceiling.
Radiator Fan Motor	Behind right side of radiator.
Recirculation Control Motor	Behind glove box, on blower unit.
Window Motor (2)	In front of respective door.
Windshield Washer Motor	Behind left side of front bumper, in washer fluid reservoir.
Windshield Wiper Motor	Below left side of air scoop.

Honda Prelude 1998 - SENDING UNITS & SENSORS

Honda Prelude 1998 SENDING UNITS & SENSORS

Component	Component Location
ABS Wheel Sensor (4)	On inside of respective wheel.
Coolant Temperature Sending Unit	On rear of cylinder head, below distributor assembly.
Countershaft Speed Sensor	On top of transaxle. See Fig. 2 .
Crankshaft Position/Top Dead Center (CKP/TDC) Sensor	Behind crankshaft pulley, on oil pump. See Fig. 1 .
Cylinder Position (CYP) Sensor	In distributor. See Fig. 1 .
Engine Coolant Temperature (ECT) Sensor	On rear of cylinder head, below distributor assembly. See Fig. 1 .
Exhaust Gas Recirculation (EGR) Valve & Lift Sensor	On rear of intake manifold. See Fig. 1 .
Fuel Tank Pressure Sensor	On right side of firewall. See Fig. 1 .
Heated Oxygen Sensor (Primary HO2S)	On underside of vehicle, front of TWC converter. See Fig. 3 .
Heated Oxygen Sensor (Secondary HO2S)	On underside of vehicle, rear of TWC converter. See Fig. 3 .
Intake Air Temperature (IAT) Sensor	On front of intake manifold. See Fig. 1 .
Knock Sensor (KS)	On left side of engine, above oil filter. See Fig. 1 .
Lateral "G" Sensor (W/ ATTS)	On left side of front passenger's footwell.
Mainshaft Speed Sensor	On right rear of transaxle. See Fig. 2 .
Manifold Absolute Pressure (MAP) Sensor	On top of throttle body. See Fig. 1 .
Oil Pressure Sensor, Left (W/ ATTS)	On right side of ATTS unit.
Oil Pressure Sensor, Right (W/ ATTS)	On top rear of ATTS unit.
Oil Temperature Sensor (W/ ATTS)	On top center of ATTS unit.
Steering Angle Sensor (W/ ATTS)	On steering column, behind combination switch.
Throttle Position (TP) Sensor	On side of throttle body. See Fig. 1 .
Vehicle Speed Sensor (VSS)	On top left of transaxle. See Fig. 1 .
Yaw Rate Sensor (W/ ATTS)	In left front of trunk.

Honda Prelude 1998 - SOLENOIDS & SOLENOID VALVES

Honda Prelude 1998 SOLENOIDS & SOLENOID VALVES

Component	Component Location
A/T Clutch Pressure Control Solenoid Valve "A"	On right rear side of transaxle. See Fig. 2 .
A/T Clutch Pressure Control Solenoid Valve "B"	On right rear side of transaxle. See Fig. 2 .
Cruise Control Actuator	On right rear of engine compartment.
Evaporative Emission (EVAP) By-Pass Solenoid Valve	On right side of firewall, left of EVAP control canister. See Fig. 1 .
Evaporative Emission (EVAP) Control Canister Vent Shut Valve	On top of EVAP control canister. See Fig. 1 .
Evaporative Emission (EVAP) Purge Control Solenoid Valve	On right side of firewall. See Fig. 1 .
Exhaust Gas Recirculation (EGR) Control Solenoid Valve	On left side of engine compartment. See Fig. 1 .
Idle Air Control (IAC) Valve	On right side of intake manifold. See Fig. 1 .
Intake Air By-Pass (IAB) Control Solenoid Valve	On lower left side of engine. See Fig. 1 .
Intake Control Solenoid Valve	On front of right strut tower. See Fig. 1 .
Lock-Up Control Solenoid Valve & Shift Control Solenoid Valve "A" Assembly	On top right front of transaxle. See Fig. 2 .
Shift Control Solenoid Valve "B"	On lower right side of transaxle. See Fig. 2 .
Shift Control Solenoid Valve "C"	On lower right side of transaxle. See Fig. 2 .
Shift Lock Solenoid	Below right side of gear selector.
Solenoid, Left (W/ ATTS)	On top right of ATTS unit.
Solenoid, Linear (W/ ATTS)	On top right of ATTS unit.
Solenoid, Right (W/ ATTS)	On top right of ATTS unit.
VTEC Solenoid Valve	On rear of cylinder head, next to coolant inlet.

Honda Prelude 1998 - SWITCHES

Honda Prelude 1998 SWITCHES

Component	Component Location
A/C Pressure Switch	On lower right front side of radiator.
A/T Gear Position Switch	On lower rear of transaxle. See Fig. 2 .
Back-Up Light Switch	On top front of transaxle.
Brake Fluid Level Switch	In brake fluid reservoir cap.
Brake Switch	Behind dash, on top of brake pedal support.
Clutch Interlock Switch	Behind dash, on top of clutch pedal support.
Clutch Switch	Behind dash, on top of clutch pedal support.
Disarm/Valet Switch	On lower left dash panel.
Door Switch (2)	In respective door pillar.
Driver's Seat Belt Switch	In driver's seat belt buckle.
Engine Oil Pressure Switch	On lower left of engine, below oil filter.
Hood Switch	On front of engine compartment, next to hood latch.
Parking Brake Switch	At base of park brake lever.
Parking Pin Switch	On left side of base of shift lever.
Power Steering Pressure (PSP) Switch	On lower left rear of engine compartment. See Fig. 1 .
Radiator Fan Switch	On thermostat cover.
Trunk Latch Switch	On center of trunk lid, at latch assembly.
VTEC Pressure Switch	On rear of cylinder head, next to coolant inlet.
2nd Clutch Pressure Switch	On top front of transaxle. See Fig. 2 .

Honda Prelude 1998 - MISCELLANEOUS

Honda Prelude 1998 MISCELLANEOUS

Component	Component Location
A/C Compressor Clutch	On lower right front of engine.
A/C Thermostat	Behind left side of glove box, in evaporator unit.
Accessory Socket	On center of dash, below radio.
Alternator	On right side of engine.
ATTS Unit (Type SH)	Between left drive shaft & transaxle.
Blower Motor Resistors	Behind glove box.
Cable Reel	On top of steering column, below steering wheel.
Dash Lights Brightness Controller	In dash, left of steering column. See Fig. 6 .
Data Link Connector (DLC)	On left side of front passenger's footwell. See Fig. 5 .
Distributor Assembly	On rear of cylinder head.
Electrical Load Detector (ELD) Unit	In underhood fuse/relay box. See Fig. 1 .
Fuel Injector (4)	On top of engine, at each cylinder intake port.
Fuel Pump	On top of fuel tank.
Fuel Tank Unit	On top of fuel tank.
Ignition Coil	On rear of engine.
Immobilizer Receiver	On ignition key cylinder.
Junction Connector C112	Behind dash, left of steering column.
Junction Connector C117	At underside of engine, right of oil filter.
Junction Connector C306	Behind left kick panel, taped to harness.
Junction Connector C406	Behind left side of dash, taped to harness.
Junction Connector C456	Behind right kick panel, taped to harness.
Junction Connector C479	Left of front passenger's footwell area, taped to harness.
Junction Connector C559	On rear left side of dashboard, taped to harness.
Multiplex Control Unit Inspection Connector	Behind dash, left of steering column.
Rear Window Defogger Coil	On underside of rear shelf.
Service Check Connector	On left side of front passenger's footwell. See Fig. 5 .
Siren	Behind left side of front bumper.
SRS Memory Erase Signal (MES) Connector	Behind dash, left of steering column.
Starter	On rear of engine, on top of transaxle.
Stereo Amplifier	On underside of rear shelf.
Test Tachometer Connector	On front of right strut tower.
Thermal Protector	On rear of A/C compressor.
Trailer Lighting Connector	On left rear of trunk, taped to harness.

Honda Prelude 1998 - CONNECTORS

Honda Prelude 1998 CONNECTORS

Component	Component Location
C119 (Gray, 10-Pin)	Above transaxle.
C140 (Gray, 10-Pin)	At right side of engine compartment.
C141 (Gray, 14-Pin)	At right side of engine compartment.
C142 (Blue, 14-Pin)	At right side of engine compartment.
C143 (A/T) (Gray, 14-Pin)	At right side of engine compartment.
C143 (M/T) (Gray, 8-Pin)	At right side of engine compartment.
C144 (Blue, 14-Pin)	At right side of engine compartment.
C146 (Gray, 8-Pin)	At underside of engine, left of transaxle.
C201 (Green, 12-Pin)	Behind right side of dash.
C301 (Gray, 14-Pin)	Behind right kick panel.
C302 (Gray, 14-Pin)	Behind left kick panel.
C303 (Brown, 7-Pin)	Behind left kick panel.
C314 (Orange, 10-Pin)	At left side of engine compartment.
C402 (Gray, 16-Pin)	Behind upper left side of dash.
C403 (Gray, 20-Pin)	Behind upper left side of dash.
C410 (Gray, 6-Pin)	Behind dash, left of steering column, on bracket.
C412 (Gray, 10-Pin)	Behind dash, left of steering column, on bracket.
C430 (Green/Gray, 25-Pin)	In driver's door jam.
C453 (Except SH) (M/T) (Gray, 6-Pin)	In driver's door jam.
C453 (SH) (A/T) (Gray, 22-Pin)	Above left side of front passenger's footrest.
C454 (Gray, 20-Pin)	Above left side of front passenger's footrest.
C461 (Except SH & Canada) (Gray, 8-Pin)	Above left side of front passenger's footrest.
C461 (SH & Canada) (Gray, 12-Pin)	Behind right kick panel.
C462 (Gray, 22-Pin)	Behind right kick panel.
C463 (Gray, 6-Pin)	Behind right side of dash.
C464 (Green/Gray, 25-Pin)	In passenger's door jam.
C482 (Except SH) (Gray, 10-Pin)	Below center of dash.
C483 (Green, 12-Pin)	Below center of dash.
C486 (Gray, 8-Pin)	Below console.
C517 (Gray, 10-Pin)	At right side of trunk.
C569 (Gray, 8-Pin)	Below center of dash.
C604 (Gray, 6-Pin)	On inside of right taillight assembly.
C607 (Gray, 6-Pin)	On inside of left taillight assembly.
C654 (Gray, 6-Pin)	In driver's door.
C657 (Gray, 6-Pin)	In driver's door.
C687 (Gray, 6-Pin)	In passenger's door.

Honda Prelude 1998 - GROUNDS

Honda Prelude 1998 GROUNDS

Component	Component Location
G1	At right front side of engine compartment. See Fig. 1 .
G2	At left side of engine compartment. See Fig. 1 .
G3	Behind center of front bumper. See Fig. 1 .
G101	At top rear side of engine. See Fig. 1 .
G201	At right front corner of engine compartment. See Fig. 1 .
G301	At left front corner of engine compartment. See Fig. 4 .
G302	At left front corner of engine compartment. See Fig. 4 .
G401	Behind left kick panel. See Fig. 7 .
G402	Behind right kick panel. See Fig. 7 .
G403	Behind right kick panel. See Fig. 7 .
G404	Behind right kick panel. See Fig. 7 .
G471	At left side of front passenger's footwell. See Fig. 7 .
G501	Under front passenger's seat.
G551	At right side of driver's footwell. See Fig. 6 .
G601	At right rear side of trunk.
G801	At right side of driver's footwell. See Fig. 6 .
G901	Behind right side of dash.