Compass

The IPC sends the processed requests over the CAN to the ACM. The ACM outputs the left and right analog chime tones to the appropriate audio system speakers as fluctuating AC voltage.

For more information, Refer to: Warning Chimes - Overview (413-01 Instrumentation, Message Center and Warning Chimes, Description and Operation). For even more information, Refer to: Warning Chimes (413-01 Instrumentation, Message Center and Warning Chimes) .

Compass

The GPS antenna integral to the GPSM is used to acquire the compass heading. The compass heading is sent through the CAN to the APIM. The APIM uses this data in addition to wheel speed and wheel rotation direction CAN messages from the ABS module to calculate and provide accurate vehicle tracking. The APIM processes the data and transmits it to be displayed on the FCDIM. In the event that the GPS fix or signal is temporarily lost, the APIM will continue to use the CAN messages from the ABS module to provide accurate vehicle tracking.

ESE - 2.3L And 5.2L

ESE is an audio system feature that enhances certain engine tones typically induced under wide open throttle or heavy part-throttle conditions. The system uses a DACMC (contained within the ACM) and the audio system speakers.

The DACMC determines the engine tone to enhance based upon engine rotation speed data, engine torque data, and accelerator pedal position data from the PCM. The data from the PCM is processed and converted into an analog audio signal, transmitted to the DACMC internal tone generator, and output by the ACM to the LHF and RHF door midwoofer speakers as fluctuating AC voltage.

MyKey® Audio Operation

The following MyKey® features are always enabled when a MyKey® is in use, and are not configurable on/off with an administrator key:

Belt-Minder®: The audio system is muted, and “MyKey Buckle Up to Unmute Audio" is displayed in the information display until the safety belts are buckled.

The following MyKey® features are configurable with an administrator key:

911 Assist™: If the administrator has selected "Always On" in the MyKey® menu, 911 Assist™ is enabled and cannot be disabled. Do Not Disturb: If the administrator has selected "Always On" in the MyKey® menu, the Do Not Disturb feature is enabled and cannot be disabled. Speed Compensated Volume: If the administrator has enabled the Volume Limiter feature, the speed compensated volume feature will be disabled. Speed Limiter: If the administrator has enabled the Speed Limiter feature, the audio volume level is temporarily reduced so the top speed alert chime can be heard when the preselected top vehicle speed is reached. Speed Minder: If the administrator has enabled the Speed Minder feature, the audio volume level is temporarily reduced so the speed alert chime can be heard when the preselected Speed Minder vehicle speed is exceeded. Volume Limiter: If the administrator has enabled the Volume Limiter feature, the audio system volume is limited to 45%. In an attempt to exceed the limited volume, “MyKey® VOLUME LIMITED” is displayed on the information display.

For more information, refer to “MyKey®” in the Owner's Literature.

RDS

RDS allows metadata (information such as station call letters, artist, song title, and genre) to be contained within FM radio waves. If the RDS feature is turned on, a PTY (Program Type) can be chosen. Once the customer has chosen a single PTY such as Sports, Rock, Religious Music, or Weather, the SEEK or SCAN button is pressed, and the ACM only tunes channels within the selected category. If a channel within the selected category is not found, the ACM will continually seek or scan.

Speed Compensated Volume

The ACM compensates for wind and road noise by adjusting the audio system volume based on the VSS signal and customer-defined setting.