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Home >> Jeep >> 2012 >> Wrangler Sport, Standard Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 4 (Transmission Control Module (TCM) - Electrical Diagnostics) >> DTC Troubleshooting >> U0164-Lost Communication With HVAC Control Module >> When Monitored:

When Monitored:

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Continuously when the ignition is on.

Battery voltage between 10 and 16 volts.

Ignition Off Draw (IOD) fused installed.

Totally Integrated Power Module (TIPM) is configured correctly.