A/C - Whistle/Rattle From Dash With A/C In Panel Mode
NUMBER: 24-007-11GROUP: Heating & Air Conditioning
DATE: August 09, 2011
SUBJECT:
Whistle Or Rattle Sound From Dash While HVAC Is Operating In Panel Mode
OVERVIEW:
This bulletin involves replacing the A/C suction and liquid lines only if necessary per the diagnosis.
MODELS:
2011 (WD) Durango
2011 (WK) Grand Cherokee
2011 (W2) Grand Cherokee (CKD)
NOTE:
This bulletin applies to vehicles equipped with air conditioning (sales code HAF or HAD or HBB) built before March 18, 2011 (MDH 0318XX).
SYMPTOM/CONDITION:
The customer may experience a whistle or rattle sound from the dash while the HVAC is operating in panel mode with the blower speed set to 2 or 3 bars.
To correct this condition the service port was moved from the A/C suction and liquid line to the A/C suction line.
DIAGNOSIS:
1. Open Hood.
2. Connect the A/C Refrigerant/Recovery Equipment to service charge port onto the service valve (Fig. 1).
NOTE:
Only connect the A/C Refrigerant/Recovery Equipment to the service charge port for this step.
3. Open the valve (Fig. 1).
4. Start engine.
5. Turn on A/C and set blower to 2 or 3 bars.
6. Raise RPM to between 1500 and 1600.
7. Is whistle or rattle sound still present?
a. Yes >>> This bulletin does not apply, further diagnosis required.
b. No >>> perform the repair procedure.
PARTS REQUIRED:
SPECIAL TOOLS/EQUIPMENT REQUIRED:
REPAIR PROCEDURE:
1. Replace the A/C suction and liquid line. Refer to the detailed procedures available in DealerCONNECT/TechCONNECT group 24 - Heating & Air Conditioning > Pluming > Line, A/C liquid Removal and Installation (Fig. 2).
2. Replace the A/C suction line. Refer to the detailed procedures available in DealerCONNECT/TechCONNECT group 24 - Heating & Air Conditioning > Pluming > Line, A/C Suction Removal and Installation (Fig. 3).
POLICY:
Reimbursable within the provisions of the warranty.
TIME ALLOWANCE:
FAILURE CODE:
Disclaimer:
This bulletin is supplied as technical information only and is not an authorization for repair.