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.
Integration Relay Circuit (At Junction Block)
Turn ignition off. Disconnect harness connector from integration relay. Remove integration relay. Check continuity between chassis ground and following junction block connector terminals, where integration relay was installed. See Figure. If continuity is as specified, perform circuit voltage test. See VOLTAGE TESTS .
- Terminal No. 4 - With passenger's door closed (door courtesy switch contacts open), there should be no continuity. With passenger's door open (door courtesy switch contacts closed), there should be continuity.
- Terminal No. 5 - With key removed from ignition switch, there should be no continuity. With key inserted into ignition switch, there should be continuity.
- Terminal No. 6 - With driver's door closed (door courtesy switch contacts open), there should be no continuity. With driver's door open (door courtesy switch contacts closed), there should be continuity.
- Terminal No. 8 - With seat belt buckled, there should be no continuity. With seat belt unbuckled, there should be continuity.
- Terminal No. 10 - There should be continuity at all times.
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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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