Message Center - System Operation and Component Description

To better illustrate the affects of how driving conditions can affect DTE, refer to the 2 following examples. The first example below illustrates how the following observations are normal and expected since the low fuel reminder is triggered from a fixed distance to empty.

If while driving, the low fuel reminder (low fuel indicator and low fuel warning message) displays when the DTE equals 80 km (50 miles) and the fuel level is 1/8th of a tank and the driver adds 11 L (3 gallons) of fuel, the new DTE may become 125 km (98 miles). After continued highway driving, the low fuel reminder may now display when the fuel level is less than 1/8 tank.

The second example (below) illustrates what occurs when idling on an incline. In this example, the customer should be made aware of how the condition will correct after a few minutes of idling on a level surface.

If the customer stops and parks the vehicle on an incline in a driveway, then in the morning remote starts the vehicle, allowing the engine to idle for 10 minutes, the DTE may now equal 105 km (55 miles). As the customer drives, the low fuel reminder displays when the DTE equals 80 km (50 miles). Finally, after 5 more minutes of driving, the DTE is back to 80 km (96 miles) and the low fuel reminder extinguishes.

Factory-Transport Mode

During vehicle build, some modules, such as the IPC and the BCM, are set in factory mode. While in the factory mode the IPC displays FACTORY MODE CONTACT DEALER in the message center. If the vehicle is set in factory mode, the system does not automatically exit the mode and must be manually set to either the transport or normal operation mode.

When the vehicle build is complete, the vehicle is set to transport mode. While in transport mode, the IPC displays TRANSPORT MODE CONTACT DEALER in the message center. Transport mode is used to reduce the drain on the battery during longer periods where the vehicle is not used. Various systems may be altered or are disabled when in the transport mode. The vehicle automatically reverts to normal operation mode after being driven 201 km (125 mi).

The IPC receives the life cycle mode message from the GWM over the HS-CAN3. The GWM receives the life cycle mode message from the BCM over the HS-CAN1.

MyKey® Function

The IPC provides message center displays for the MyKey® feature. MyKey® displays are controlled through the IPC software based on the MyKey® settings, configured through the message center, and the type of key in use (MyKey® or administrator key). The MyKey® function also uses messages received by the IPC for other indications such as vehicle speed for speed limiter displays.

Odometer

The IPC uses ignition status, transport mode, vehicle configuration and trip odometer verify messages to determine when to display the odometer and the odometer count message to provide the actual odometer reading. The IPC receives the odometer count message from the GWM over the HS-CAN3. The GWM receives the odometer count from the PCM over the HS-CAN1. The IPC monitors the odometer count input from the GWM and commands the odometer with a digital display in the message center.

The IPC receives the ignition status, transport mode, vehicle configuration and trip odometer verify messages from the GWM over the HS-CAN3. The GWM receives the ignition status, transport mode, vehicle configuration and trip odometer verify messages from the BCM over the HS-CAN1.

Reconfigurable Telltales (RTT's)

Blind Spot Monitoring System (BLIS) Off

The IPC provides a RTT to inform the driver that the Blind Spot Monitoring System (BLIS) is turned off. The IPC receives the side obstacle detect status-left and side obstacle detect status-right messages from the GWM over the HS-CAN3. The GWM receives the side obstacle detect status-left and side obstacle detect status-right messages from the SODL and SODR over the MS-CAN.

Charging System

The IPC provides a charging system message center indicator along with message displays indicating the status of the charging system. When a charging system fault is present, the BCM sends the battery low state of charge message to the GWM over the HS-CAN1. The GWM sends the battery low state of charge message to the IPC to turn on the charging system RTT and to display the message center warning messages.