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Home >> Jeep >> 2009 >> Liberty Limited, RWD >> Repair and Diagnosis >> Transmission >> Transmission Control Systems >> (Transmission Control Module (TCM) - Electrical Diagnostics) >> DTC Troubleshooting >> P2638-Torque Management Feedback Signal Performance >> Possible Causes

Possible Causes

Possible Causes 
CAN BUS CIRCUIT DTC PRESENT
TRANSMISSION CONTROL MODULE
POWERTRAIN / ENGINE CONTROL MODULE

Always perform the NAG1 Pre-Diagnostic Troubleshooting procedure before proceeding. See  DTC-Based Diagnostics/MODULE, Transmission Control (TCM) - Standard Procedure  

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