Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2000 Honda Prelude Base, AutomaticFACTORY OEM SERVICE PROCEDURE
Control Units
CONTROL UNITS
| Component | Component Location |
|---|---|
| ABS Control Unit | Behind right kick panel. See Figure . |
| ABS Modulator Unit | In left front of engine compartment. |
| ATTS Control Unit (Type SH) | On underside of front passenger's footrest. See Figure . |
| ATTS Unit (Type SH) | Between left drive shaft and transaxle. |
| Cruise Control Unit | Behind dash, above accelerator pedal. See Figure . |
| Daytime Running Lights (DRL) Control Unit (Canada) | Behind dash, above accelerator pedal. See Figure . |
| Electrical Load Detector (ELD) Unit | In underhood fuse/relay box. See Figure . |
| Engine Control Module (ECM) | On underside of front passenger's footrest. See Figure . |
| Immobilizer Control Unit | Behind dash, on left side of steering column. See Figure . |
| Multiplex Control Unit (Door) | In driver's door. See Figure . |
| Multiplex Control Unit (Driver's) | On rear of underdash fuse/relay box. See Figure . |
| Multiplex Control Unit (Passenger's) | Behind right kick panel. See Figure . |
| Security Control Unit | Behind dash, above accelerator pedal. |
| SRS Unit | Below center of dash. See Figure . |
| Transmission Control Module (TCM) | On underside of front passenger's footrest. See Figure . |
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.