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)DTC TROUBLESHOOTINGB11D5-00-A/C COOLDOWN TEST PERFORMANCE - EVAP TEMP SENSOR ERRORDIAGNOSTIC TEST

2011 Jeep Grand Cherokee Overland, 5.7 T, RWD

Diagnostic Test

2011 Jeep Grand Cherokee Overland, 5.7 T, RWDSECTION Diagnostic Test

CHECK IF DTC IS ACTIVE
1. Ignition on, engine not running.
2. Using the scan tool, perform an A/C Cooldown Test.
3. Using the scan tool, read HVAC DTCs.
  Is this DTC active?
  
  Yes
  - Go To 2.
  No
  - Go To 4.
PERFORM HVAC ACTUATOR CALIBRATION TEST
1. Using the scan tool, perform the HVAC Actuator Calibration Test.
  Did any other HVAC DTCs set while performing the Actuator Calibration Test?
  
  Yes
  - Refer to DIAGNOSIS AND TESTING and perform the appropriate diagnostic procedure.
  No
  - Go To 3.
CHECK THE EVAPORATOR TEMPERATURE SENSOR
1. Replace the Evaporator Temperature Sensor in Accordance with the Service Information. Refer to SENSOR, EVAPORATOR TEMPERATURE, REMOVAL .
2. Using the scan tool, erase HVAC DTCs.
3. Cycle the ignition off for 30 seconds then back on.
4. Using the scan tool, perform an A/C Cooldown Test.
5. With the scan tool, read HVAC DTCs.
  Does this DTC reset?
  
  Yes
  - Replace and program the A/C Heater Control in accordance with the Service Information. Refer to CONTROL, A/C AND HEATER, REMOVAL .
  - Perform the HVAC VERIFICATION TEST. Refer to HVAC VERIFICATION TEST .
  No
  - Test complete.
  - Perform the HVAC VERIFICATION TEST. Refer to HVAC VERIFICATION TEST .
CHECK THE WIRING AND CONNECTORS
1. The conditions necessary to set the DTC are not present at this time.
2. Using the scan tool, check the Environmental Data to help identify the conditions in which the DTC was set.
3. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension.
4. Wiggle the wiring and connectors while checking for shorted and open circuits.
  Were there any problems found?
  
  Yes
  - Repair as necessary.
  - Perform the HVAC VERIFICATION TEST. Refer to HVAC VERIFICATION TEST .
  No
  - Test complete.

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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.