Central Timer Module: Description
Two versions of the Central Timer Module (CTM) are available on this vehicle. (Fig 1 ). Whichever version of the CTM the vehicle is equipped with, it is concealed behind the trim on the left cowl side inner panel below the instrument panel. The base models are not equipped with the optional power lock system, the Remote Keyless Entry (RKE) system, the Vehicle Theft Security System (VTSS), or the remote radio controls. The high-line version of the CTM are used on vehicles that are equipped with one or more of those options.
The CTM utilizes circuitry, and information carried on the Programmable Communications Interface (PCI) data bus network, along with many hard wired inputs to monitor many sensor and switch inputs throughout the vehicle. In response to those inputs, the programming of the CTM allow it to supply the vehicle occupants with audible and visual information, and to control and integrate many electronic functions and features of the vehicle through both hard wired outputs and the transmission of electronic message outputs to other electronic modules in the vehicle over the PCI data bus.
The features that the CTM supports or controls include the following:
- Automatic Door Lock
- Battery Protection
- Central Locking
- Chimes
- Door Lock Inhibit
- Enhanced Accident Response
- Exterior Light Features
- Interior Light Features
- Intermittent Wipe Control
- Panic Mode
- Power Lock Control
- Programmable Features
- Remote Keyless Entry
- Remote Radio Switch Interface
- Speed Sensitive Intermittent Wipe Control
- Vehicle Theft Security System
Hard wired circuitry connects the CTM to the electrical system of the vehicle. Refer to the appropriate wiring information.
All versions of the CTM for this model are serviced only as a complete unit. Many of the features in the vehicle controlled or supported by the CTM are programmable using the DRBIII(R) scan tool. If any of the CTM hardware components are damaged or faulty, the entire CTM unit must be replaced. The hard wired inputs or outputs of all CTM versions can be diagnosed using conventional diagnostic tools and methods. For diagnosis of the CTM or the PCI data bus, the use of a DRBIII(R) scan tool is required. Refer to the appropriate diagnostic information.