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 175 (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 Honda Odyssey and 2005 Honda Odyssey. 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 ).
- PGM-FI main relay 2 contains a diode between No. 3 and No. 4 terminals. Power (+B) must be connected to the No. 4 terminal, and ground connected to the No. 3 terminal. Failure to test relay correctly will damage the relay and the PCM.
RELAY SPECIFICATION
| Relay | Test |
|---|---|
| A/C compressor clutch relay | Normally-open type |
| Blower motor relay | |
| A/C condenser fan relay | |
| Engine mount control relay | |
| Driver's accessory power socket relay | |
| Passenger's accessory power socket relay | |
| Ignition coil relay | |
| A/F sensor relay | |
| PGM-FI main relay 1, 2 | |
| Power window relay | |
| Radiator fan relay | |
| Rear window defogger relay | |
| Rear blower motor relay | |
| Starter cut relay | |
| Seat heater relay | |
| ETCS control relay | |
| Fog light relay | |
| Daytime running lights relay (Canada) | Five-terminal type |
| Fan control relay | |
| Adjustable pedal forward relay | |
| Adjustable pedal rearward relay | |
| Moonroof open relay | |
| Moonroof close 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.