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.
Power Relay Test: Notes
Special Tools Required
- Relay Puller 07AAC-000A1A0 or 07AAC-000A2A1
- Relay Socket Extension (4 Pin) 07AGK-000A1A0
- Relay Socket Extension (5 Pin) 07AGK-000A2A0
Use this chart to identify the type of relay, then do the test listed for it.
| Relay | Test |
|---|---|
| A/C compressor clutch relay | Normally-open four-terminal type |
| A/C condenser fan relay | |
| A/F sensor relay | |
| Blower motor relay | |
| ETCS control relay | |
| Ignition coil relay | |
| Lighting relay | |
| Motor control module (MCM) relay 1 | |
| Motor control module (MCM) relay 2 | |
| PGM-FI main relay 1 | |
| PGM-FI main relay 2 | |
| Power window relay (P/W) | |
| Radiator fan relay | |
| Rear window defogger relay | |
| Starter cut relay | |
| Driver's door unlock relay | Five-terminal type |
| Fan control relay | |
| Hatch release actuator relay |
Use the Manual With the Right Hardware
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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.
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