Chime System

The chime system is built into the [1][2]CTM. The system also supports an external chime request from the instrument cluster. This feature allows the instrument cluster to request a chime from the CTM for gauge problems and tell tale warnings. The CTM chime functions will have priority over the MIC chime requests. There are two chime rates, Low; 50 chimes per minute for reminders and High; 80 chimes per minute for serious conditions that require immediate attention. The high rate chime sounds when the key is left in the ignition and the driver doors is open or the headlights are left ON. The low rate chime sounds for any of the other conditions. There is a variable rate feature that allows the chime to sound continuously for key-in and headlamp warning as long as the door is open. The seat belt warning chime is activated for 4 to 6 seconds, and all other chime conditions will activate the chime once at the same time the warning light on the cluster is illuminated.

The chime will sound for the following conditions:
High Rate
- Key in Ignition Warning ignition OFF, key in ignition, drivers door open
- Ignition OFF, headlamps ON, drivers door open Low Rate
- Seat belt warning-6 seconds after key ON (6 to 8 chimes) or until belt is buckled
- Airbag lamp illuminated (3 times after prove-out)
- Anti-lock lamp illuminated (2 chimes after prove- out if equipped)
- Check engine lamp illuminated (2 chimes after prove-out)
- Check gauges lamp illuminated (2 chimes)
- Engine Temp High--when gauge enters red zone (2 chimes)
- Low fuel- when fuel level reaches /8 tank (2 chimes)
- Low washer fluid (2 chimes)
- Wait to start (diesel only) (2 chimes)
- Water in fuel (diesel only) ( 2 chimes)

If the ignition switch is turned to the run/start/acc position and the driver's door is closed, then opened, the warning chime is defeated. This allows the doors to be open without the warning chime constantly sounding. The [1][2]CTM stays in this mode until the ignition switch is turned to the "OFF" position, then normal function will be restored. (Highline CTM only).