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Home >> Chrysler >> 2009 >> 300 Signature Series >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Transmission Control Module (TCM) - Electrical Diagnostics >> DTC Troubleshooting >> P1629-TCM Internal - Solenoid Supply/ Watchdog >> Possible Causes

Possible Causes

Possible Causes 
(T78) SOLENOID SUPPY VOLTAGE CIRCUIT SHORT TO VOLTAGE
TRANSMISSION 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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