Rick's Free Auto Repair Advice

Posts Tagged: central timer module

Central Timer Module, body control module, gem module

What the heck is a Central Timer Module, body control module, gem module As I read auto forums I constantly hear people asking what a body control module does, where it’s located and how to fix it. These computers are known by several different names. Central Timer Module, body control module, gem module. Every car maker is switching to digital controls for almost all vehicle functions. It’s an effort to reduce wiring costs and complexity, reduce weight, and have complete control over all systems to further increase MPG. To understand … Read More

Headlights flashing

Why are my headlights flashing  on Dodge Durango In the old days the headlight switch actually switched power to the headlights. Then car makers used the headlight switch to switch power to headlight relays and the relays actually switch power to the headlights. Well, kiss those days goodbye too. Chrysler now uses a Central Timer Module (CTM) to do some of that work. The headlight switch in Dodge Durango is just used to signal the CTM which lights the driver wants to control. The multifunction headlight switch communicates with the … Read More

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