STATUS MESSAGES
Pressing the INFORMATION (digital) or INFO (analog) button cycles the driver message center through the following status messages:
| • | Blank (no display) |
| • | RANGE (analog) |
| • | AVG MPG (analog) |
| • | MPG INST (analog) |
| • | FUEL USED |
| • | AVG MPH |
| • | OIL LIFE LEFT |
| • | ENGINE RPM (digital) |
| • | BATTERY VOLTS |
| • | COOLANT TEMP (digital) |
| • | Cellular Telephone Status (optional) |
| • | TIMER OFF |
| • | TIMER ON |
| • | ENGLISH/METRIC RESET (analog) |
Refer to the appropriate status message information for a detailed description.
Blank
The driver message center may be blank, with no message displaying, by pressing the INFORMATION (digital or INFO (analog) button until the display is blank.
RANGE (analog)
The RANGE message is an estimate of the expected remaining driving distance with the current fuel level. The vehicle driving range is based on the following circumstances:
| • | The fuel remaining in the tank |
| • | The fuel economy over the last 25 miles (40 km) |
Since the last calculated range parameter is an estimated value, the display value and the actual value may vary. When the calculated range parameter falls below 65 km (40 miles), the LO RANGE message displays.
The IPC calculates the range parameter as follows: Estimated Range = Distance Traveled/Fuel Used x Scale Factor x Filtered Fuel in Tank.
The driver may not reset the calculation. The data that the IPC uses in order to calculate the range parameter is lost if battery disconnect occurs. The message contains dashes if the IPC may not communicate with the PCM or PZM through the class 2 serial data line.
MPG AVG (analog)
The MPG AVG message is the miles per gallons (MPG) or liters per 100 kilometers (L/100 km) obtained since the last parameter reset.
The IPC calculates the average fuel economy parameter as follows: Average Fuel Economy = (trip distance) / (trip fuel used) x scale factor.
In order to reset the parameter, complete the following steps:
- Press the INFO (analog) button until the MPG AVG message displays.
- Press the INFO RESET (analog) button.
The data the IPC uses in order to calculate the average fuel economy is lost if a battery disconnect occurs.
The message contains dashes if the IPC is unable to communicate with the PCM through the class 2 serial data line.
MPG INST (analog)
The MPG INST message is based on the previous few seconds of vehicle operation. The IPC calculates the instantaneous fuel economy (IFE) parameter as follows: IFE = Distance / Fuel Used x Scale Factor. The IPC determines the distance from the discrete vehicle speed input to the IPC and the IPC receives the fuel data from the PCM.
The driver may not reset the calculation. The data that the IPC uses in order to calculate the IFE parameter is lost if a battery disconnect occurs. The message contained dashes if the IPC may not communicate with the PCM through the class 2 serial data line.
FUEL USED
The FUEL USED message is the number of gallons or liters used since the last parameter reset. The IPC calculates the fuel used parameter as follows: Fuel Used = Fuel Sum x Scale Factor.
In order to reset, display the fuel used parameter and press the RESET (digital) or INFO RESET (analog) button for at least 1 second. The data used in order to calculate the fuel used is lost if a battery disconnect occurs. The message contains dashes if the IPC is unable to communicate with the PCM via the class 2 serial data line. This message may be suppressed by using the override option E. Refer to Diagnostic System Check - Instrument Cluster . The data is lost if the battery is disconnected.
MPH (Analog)
The MPH message is the current vehicle speed. This display is not active on vehicles unless enabled by using the override option E. The speed displayed in this message may not always match the speed displayed by the analog (needle) speedometer. The analog gauge still meets all of the government requirements even though the displays are different.
AVG MPH
The AVG MPH message is an indication of the vehicle's average road speed since the last reset of the parameter. The average speed parameter is displayed in either English XXX.X AVG MPH or Metric XXX.X AVG km/h units. This message may be suppressed by using the override option E. Refer to Diagnostic System Check - Instrument Cluster . The IPC uses the following equation in order to calculate the average speed parameter:
(Average Speed) = (Total Distance Traveled) / (Total Time) (with the ignition in the RUN position).
In order to reset, display the AVG MPH message on the driver message center and press the RESET (digital) or the INFO RESET (analog) button for at least 1 second. The data used in order to calculate the average speed is lost if a battery disconnect occurs.
OIL LIFE LEFT
The oil life index parameter is an indication of the approximate percentage of useful engine oil life remaining since the last reset of the parameter. The oil life index is displayed as ### OIL LIFE LEFT. This figure is calculated by the PCM and sent to the IPC via the class 2 serial data line. When the oil life index parameter reaches 0% the CHANGE ENGINE OIL message is displayed.
In order to reset the parameter after an engine oil change, display the OIL LIFE LEFT message on the driver message center and press and hold the RESET (digital) or the INFO RESET (analog) button for approximately 5 seconds. When the parameter is reset, the message 100% OIL LIFE LEFT is displayed.
ENGINE RPM (Digital)
The engine RPM parameter is displayed by pressing the INFORMATION (digital) button until the ENGINE RPM message is displayed. The IPC contains the engine RPM data via CKT 121 (WHT) from the PCM. The engine speed (RPM) parameter is calculated from the time difference between two consecutive tachometer pulses. This message may be suppressed by using the override option E. Refer to Diagnostic System Check - Instrument Cluster . The engine RPM parameter displays dashes if a malfunction occurs in the serial data communications from the IPC to the PCM. Diagnose this symptom by retrieving and diagnosing the IPC or PCM serial data communication DTCs.
BATTERY VOLTS
The battery voltage parameter is displayed by pressing the INFORMATION (digital) or INFO (analog) button until the BATTERY VOLTS message is displayed. The parameter has a range from 9.0-16.2 V. The IPC monitors the controlled power circuit in order to determine the parameter value. This battery voltage may be different than the voltage measured at the battery. This message may be suppressed by using the override option E. Refer to Diagnostic System Check - Instrument Cluster .
he voltage at the IPC controlled power input and the displayed value will differ. The displayed value is 0.2-0.8 V higher due to filtering and offsets.
COOLANT TEMP (digital)
The engine coolant temperature parameter is displayed by pressing the INFORMATION (digital) button until the XX X COOLANT TEMP message is displayed. This message is suppressed by default on analog IPCs. The coolant temperature parameter displays dashes if a malfunction occurs in the serial data communications from the IPC to the PCM. Diagnose this symptom by retrieving and diagnosing the IPC or PCM serial data communication DTCs.
Cellular Telephone Status (Optional)
The following cellular telephone status messages may be displayed:
| • | PHONE NO HANDSET |
| • | PHONE OFF |
| • | PHONE NO SERVICE |
| • | PHONE ON |
| • | PHONE LOCKED |
| • | PHONE ROAM A |
| • | PHONE ROAM B |
| • | PHONE PAUSE |
| • | PHONE CALL |
These messages are present only if the phone override option C is set.
TIMER
For the digital and analog IPC on the DeVille with D55, use the following directions in order to operate the timer:
| • | Press the TIMER button until the elapsed time message TIMER OFF XX:XX:XX or TIMER ON XX:XX:XX is displayed. The format is hours:minutes:seconds. |
| • | When one of the elapsed time messages are displayed, press the TIMER button in order to start or stop the timer. |
| • | Once the elapsed time message is displayed, press the INFORMATION button in order to scroll the driver message center to the next message. The timer continues to increment if the timer was started. |
| • | In order to reset the elapsed time message (timer) to zero, display an elapsed time message and press the RESET button for at least 1 second. The elapsed time message is displayed as TIMER OFF 00:00:00 or TIMER ON 00:00:00. |
For the analog IPC on the Eldorado, use the following directions in order to operate the timer:
| • | Press the INFO button until the elapsed time message TIMER XX:XX:XX is displayed. The format is hours:minutes:seconds. |
| • | When the elapsed time message is displayed, press the INFO RESET button momentarily in order to start or stop the timer. |
| • | Once the elapsed time message is displayed, press the INFO button in order to scroll the driver message center to the next message. The timer continues to increment if the timer was started. |
| • | In order to reset the elapsed time message (timer) to zero, display an elapsed time message and press and hold the INFO RESET button for approximately 1 second. The elapsed time message is displayed as TIMER 00:00:00. |
ENGLISH/METRIC RESET (Analog IPC)
This function allows the driver to change some IPC displays and functions from English to Metric units. In order to change units, press the INFO button until the ENGLISH/METRIC RESET message is displayed. Press the INFO RESET button. This action causes the following displays to be affected:
Display | English | Metric |
|---|---|---|
Vehicle Speed | MPH | km/h |
Season Odometer | MILES | km |
Trip Odometer | MILES | km |
Range | MILES | km |
Temperature | °F | °C |
Fuel Economy | MPG | L/100 km |
Fuel Level | GAL | L |
