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Home >> Chrysler >> 2007 >> 300 Base >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Cruise Control Systems >> Cruise Control System - Electrical Diagnostics >> Speed Control - Electrical Diagnostics >> Adaptive Cruise Control Module >> DTC Troubleshooting >> P1666-Cruise Control Module Internal >> Possible Causes

Possible Causes

Possible Causes 
ACC MODULE

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to DIAGNOSIS AND TESTING .