Grand Caravan V6-3.3L VIN R (2005)
HVAC SYSTEM TEST
POSSIBLE CAUSES
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Attempt to communicate with the PCM/ECM, the BCM, and the FCM
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Check for HVAC related DTC's in the PCM/ECM
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Check for BCM DTC's
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Check for FCM DTC's
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Check for active ATC DTC's
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Check for AC cooldown test fault messages
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Check for HVAC related DTC's in the PCM/ECM
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Manual A/C system test
Rear ATC Switch LED(s)/Backlighting Inoperative
Test 1 - 3
