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 MANUALSCHEVROLET2008HHR LT, 2.4 P, AUTOMATICREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 178 (RELAYS)POWER RELAY TESTNOTES
2008 Chevrolet HHR LT, 2.4 P, Automatic
Power Relay Test: Notes
2008 Chevrolet HHR LT, 2.4 P, AutomaticSECTION Notes
WARNING: This page is about a different car, the 2011 Honda Insight and 2010 Honda Insight. 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.
POWER RELAY TEST REFERENCE
| 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 | |
| Horn relay | |
| Ignition coil relay | |
| Lighting relay | |
| Motor control Module (MCM) relay 1 | |
| Motor control Module (MCM) relay 2 | |
| PGM-FI main relay 1 (Fl MAIN) | |
| PGM-FI main relay 2 (FUEL PUMP) | |
| Power window relay (P/W) | |
| Radiator fan relay | |
| Rear window defogger relay | |
| Starter cut relay (ST CUT) | |
| Driver's door unlock relay | Five-terminal type |
| Fan control relay | |
| Hatch release actuator relay |
NOTE:
Carefully remove the relay from the under-dash fuse/relay box. Do not use pliers. Pliers will damage the relay.
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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.