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.
Relay Test
The compressor clutch relay is located in the Power Distribution Center (PDC). Refer to the PDC label for relay identification and location. Remove the relay from the PDC to perform the following tests:
- A relay in the de-energized position should have continuity between terminals No. 87A and 30, and no continuity between terminals No. 87 and 30. If OK, go to next step. If not OK, replace the faulty relay.
- Resistance between terminals No. 85 and 86 (electromagnet) should be 70-80 ohms. If OK, go to next step. If not OK, replace the faulty relay.
- Connect a battery to terminals No. 85 and 86. There should now be continuity between terminals No. 30 and 87, and no continuity between terminals No. 87A and 30. If OK, see the Relay Circuit Test procedure in this group. If not OK, replace the faulty 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.
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