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Home >> Chrysler >> 2011 >> 300 C, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 909 ((Heating & Air Conditioning - Electrical Diagnostics - 2500 Hd & 3500 Hd)) >> Diagnosis And Testing >> B11D3-00-A/C Cooldown Test Performance - Compressor Not Engaged >> Possible Causes

Possible Causes

WARNING: This page is about a different car, the 2015 RAM 3500 HD and 2015 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
Possible Causes
LOSS OF COMMUNICATION WITH THE PCM OR MULTIPLE BUS PROBLEMS
PCM A/C COMPRESSOR DTCS
A/C SYSTEM LEAK
HVAC MODULE

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding. Refer to HVAC PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE  .

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