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.
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HOMESERVICE MANUALSHONDA2002CIVIC SIREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 105 (RELAYS)POWER RELAY TESTNOTES
2002 Honda Civic Si
Power Relay Test: Notes
2002 Honda Civic SiSECTION Notes
WARNING: This page is about a different car, the 2006 Acura MDX, 2005 Acura MDX, 2004 Acura MDX, and 2003 Acura MDX. However, it is still accessible from the selected car via links, so may be relevant.
Use this chart to identify the type of relay, then do the test listed for it.
NOTE:
For the turn signal/hazard relay input test (see TURN SIGNAL/HAZARD RELAY INPUT TEST
).
RELAY POWER TEST
| Relay | Test |
|---|---|
| Accessory power socket relay | Normally-open type A |
| A/C compressor clutch relay | |
| A/C condenser fan relay | |
| A/F (air fuel ratio) sensor relay | |
| Dimmer relay | |
| Fog light relay | |
| Headlight relay 1 | |
| Headlight relay 2 | |
| High beam cut relay (Canada) | |
| Horn relay | |
| Ignition coil relay | |
| PGM-FI main relay 1 | |
| PGM-FI main relay 2 | |
| Power window relay | |
| Radiator fan relay | |
| Reverse relay | |
| Rear accessory power socket relay | |
| Rear stereo amplifier relay ('03 model) | |
| Seat heater relay | |
| Starter cut relay | |
| Taillight relay | |
| Throttle actuator control module relay | |
| VTM-4 relay | |
| Blower motor relay | Normally-open type B |
| Rear blower motor relay | |
| Rear window defogger relay | |
| Automatic wiper relay | Five-terminal type |
| Fan control relay | |
| Intermittent wiper relay | |
| Key interlock relay ('05-06 models) | |
| Moonroof open relay | |
| Moonroof close relay | |
| Shift lock relay |
RENDER: 1.0x
NO RELATED
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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.