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Home >> Jeep >> 2014 >> Compass Limited, AWD, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 174 ((Transmission Control Module (TCM) - Electrical Diagnostics)) >> DTC Troubleshooting >> P1639-TCM Internal-Can 2 Ram Performance >> When Monitored:

When Monitored:

WARNING: This page is about a different car, the 2012 Jeep Liberty. However, it is still accessible from the selected car via links, so may be relevant.

Continuously with the ignition on.

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