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.
Rear Integration Module (RIM)
- Load Shed Lvl.2 R. Defog.
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The scan tool displays Enabled/Disabled. The scan tool displays Enabled, when system voltage is low. The RIM cycles the rear window defogger ON at 50 percent of a cycle and OFF at 50 percent of the cycle.
- Rear Defog Relay
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The scan tool displays On/Off. When the rear window defogger is enabled, the HVAC control module sends a class 2 message to the RIM to enable the rear defogger relay. The RIM energizes the rear defogger relay by grounding the control circuit of the rear defogger relay, which the scan tool displays as On.
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.