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Home >> Chrysler >> 2009 >> 300 Touring, AWD >> Repair and Diagnosis >> Engine Performance >> System >> (Police & Taxi Interface Module (PTIM) - Electrical Diagnostics) >> DTC Troubleshooting >> B1693-Accessory Dimming Control Circuit Low >> Possible Causes

Possible Causes

Possible Causes 
(W521) CLUSTER DIMMER SWITCH SENSE CIRCUIT SHORTED TO GROUND
AFTERMARKET LIGHT/SIREN CONTROLLER
MULTI-PURPOSE MODULE (POLICE AND TAXI INTERFACE MODULE-PTIM)