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.
Engine Hot...A/C Off-9
The DIC displays the ENGINE HOT...A/C OFF-9 message when the dash integration module (DIM) determines that the coolant temperature is above the normal operating range and the air conditioning is on. The air conditioning compressor is disabled. The DIC receives a class 2 message from the DIM requesting illumination. The IPC sends a class 2 message to the radio in order to activate an audible warning.
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.