The P53 Driver Information Display is a multifunction module that provides the vehicle operator with information such as vehicle speed, engine RPM, fuel level, and coolant temperature in digital format which will be in various locations depending on display mode selected. This display is highly reconfigurable and also provides the operator with operational warnings and messages.  Certain areas of the display is touchscreen which allows the user to access the cluster menu, vehicle information menus, and Head-up Display controls. The P53 Driver Information Display is not on the vehicle serial data bus, and therefore does not directly report or store DTCs. The P53 Driver Information Display is directly connected to the A11 Radio via an LVDS cable, and relies on the Radio for any information about the vehicle status, etc.

Refer to Indicator/Warning Message Description and Operation.

The P53 Driver Information Display displays the vehicle speed based on the information from the BCM. The BCM sends the vehicle speed information via serial data to the Radio. The Radio then sends the vehicle speed information via an LVDS cable to the P53 Driver Information Display to display the vehicle speed.

The P53 Driver Information Display displays the vehicle odometer in the driver information center. The BCM send a distance rolling count message via serial data to the Radio. The Radio uses this information to calculate the vehicle odometer. This odometer value is then sent to the P53 Driver Information Display. The P53 Driver Information Display does not calculate the odometer.

The odometer value is stored in multiple modules. The Radio is a secondary storage module for the odometer, while the BCM is the primary storage and accumulator.

The vehicle compass information is gather through the compass module or vehicle communication interface module (VCIM). The compass module or VCIM determines vehicle direction and communicates this with the BCM through serial data. The BCM sends the compass information to the P53 Driver Information Display via serial data, where it is displayed.

The Ambient Air Temperature Sensor is located behind the grille and varies it’s resistance with temperature. The Battery Energy Control Module reads the resistance value to determine temperature. The time of and rate of the temperature update is based on an algorithm in the Battery Energy Control Module software. Factors such as, last reading, current reading, length of time vehicle is been off/on, power mode, vehicle speed, driven distance, and sensor location are all considered by the Battery Energy Control Module to know when to update the displayed temperature. For example, if the sensor is located near the engine compartment, and the vehicle has been turned off for only 10 minutes then restarted, the Battery Energy Control Module will wait until the vehicle is driven to get more accurate air flow across the sensor before it updates the display.