Displays Test
Certain instrument panel cluster (IPC) features are tested when the
ignition is turned on in order to verify the features are working properly.
The following will illuminate briefly or flash at key up:
| • | The engine coolant indicator |
| • | The fasten safety belts indicator |
| • | The low engine oil pressure indicator |
| • | The SERVICE ENGINE SOON indicator (MIL) |
| • | The TRACTION CONTROL indicator |
Indicators and Warning Messages
Refer to
Indicator/Warning Message Description and Operation
.
Engine Coolant Temperature Gage
The IPC displays the engine coolant temperature as determined by the
powertrain control module (PCM). The IPC receives a class 2 message
from the PCM indicating the engine coolant temperature. The engine
coolant temperature gage defaults to C if:
| • | The PCM detects a malfunction in the engine coolant temperature
sensor circuit. |
| • | The IPC detects a loss of class 2 communications with the
PCM. |
Fuel Gage
The IPC displays the fuel level as determined by the body control module
(BCM). The IPC receives a class 2 message from the body control module
(BCM) indicating the fuel level percent. The fuel gage defaults to
empty if:
| • | The BCM detects a malfunction in the fuel level sensor circuits. |
| • | The IPC detects a loss of class 2 communications with the
BCM. |
Odometer
The IPC contains a season odometer and a trip odometer. The IPC calculates
the mileage based on the vehicle speed signal circuit from the PCM.
The mileage is stored in the EEPROM. The odometer will display 'error'
if an EEPROM failure is detected. Pressing the TRIP RESET (YES) button
of the driver information center (DIC) for greater than 2 seconds
resets the trip odometer. The odometer displays either miles
or kilometers as requested by pressing the INFO (SKIP) button of the DIC
in order to scroll to the ENGLISH/METRIC parameter. Briefly pressing the
INFO RESET (NO) button of the DIC will command the km or the MI indicator
to illuminate in the IPC.
PRNDL Display
The IPC displays the selected gear position as determined by the PCM.
The IPC receives a class 2 message from the PCM indicating the gear
position. The PRNDL display blanks if:
| • | The PCM detects a malfunction in the transmission range switch
circuit. |
| • | The IPC receives a class 2 message indicating that the
park position and the column park switch indicate a position other than park. |
| • | The IPC detects a loss of class 2 communications with the
PCM. |
Speedometer
The IPC displays the vehicle speed in response to the information received
from the PCM. The PCM converts the data received from the vehicle speed sensor
to a 4000 pulses/mile signal. The IPC uses the vehicle speed signal
circuit from the PCM in order to calculate the vehicle speed.
The speedometer defaults to 0 km/h (0 mph) if a malfunction
in the vehicle speed signal circuit exists. The speedometer displays
either kilometers per hour or miles per hour as requested by pressing
the INFO (SKIP) button of the DIC in order to scroll to the
ENGLISH/METRIC parameter. Briefly pressing the INFO RESET (NO) button
of the DIC will command the km/h or the MPH indicator to illuminate in
the IPC.
Tachometer
The IPC displays the engine speed in response to the information received
from the PCM. The PCM converts the data received from the engine speed sensor
to a 2 pulses/engine revolution signal. The IPC uses the engine
speed signal circuit from the PCM in order to calculate the engine
speed. The tachometer defaults to 0 RPM if a malfunction
in the engine speed signal circuit exists.
