Mike's Workshop Manuals
: Service manuals for every vehicle
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Jeep
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2013
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Grand Cherokee Laredo, AWD
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Repair and Diagnosis
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Body & Frame
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Windows
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Passenger Door Module (PDM) (DMFR) - Electrical Diagnostics
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DTC Troubleshooting
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U0164-00-Lost Communication With HVAC Control Module
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When Monitored
When Monitored
Continuously when the ignition is on.
Battery voltage between 10 and 16 volts.
Ignition Off Draw (IOD) fuse installed.