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 MANUALSJEEP2011GRAND CHEROKEE OVERLAND, 5.7 T, RWDREPAIR AND DIAGNOSISHEATING, VENTILATION & A/C (HVAC)HVAC CONTROL SYSTEMS(HEATING & AIR CONDITIONING - ELECTRICAL DIAGNOSTICS)STANDARD PROCEDUREHEATING-A/C SYSTEM DIAGNOSTICSSYSTEM TESTS - A/C COOLDOWNA/C COOLDOWN TEST
2011 Jeep Grand Cherokee Overland, 5.7 T, RWD
A/C Cooldown Test
2011 Jeep Grand Cherokee Overland, 5.7 T, RWDSECTION A/C Cooldown Test
The A/C Cooldown Test:
- is actuated with a scan tool.
- tests A/C system performance based on evaporator temperature sensor input.
- will fail if evaporator starting temperature is below 18° C (65° F) when initiating the test.
- will pass if the evaporator temperature drops 11° C (20° F).
- indicates test outcome by displaying one or more test status messages on the scan tool. These messages will clear after paging back out of this test function. Therefore, is it important to note all of the messages before doing so.
- will cause the A/C status indicator to flash while the test is running.
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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.