Displays Test
Certain instrument panel cluster (IPC) features are tested when the
ignition is turned on in order to verify that the features are working properly.
The following indicators illuminate briefly at key up:
| • | Air bag -- flashes 7 times |
| • | Low coolant level indicator |
| • | Low oil pressure indicator |
| • | Malfunction indicator lamp (MIL) -- Check engine |
Indicators and Warning Messages
Refer to
Indicator/Warning Message Description and Operation
.
Engine Coolant Temperature Gage
The PCM sends coolant temperature as determined by the coolant temperature sensor to the BCM via class 2. The IPC displays the engine coolant temperature as determined by the BCM. The IPC receives a class 2 message from the BCM indicating
the engine coolant temperature. The engine coolant temperature gage defaults to 75°C (160°F) or below if:
| • | The PCM detects a malfunction in the engine coolant temperature sensor circuit. |
| • | The IPC detects a loss of class 2 communications with the BCM. |
| • | The BCM detects a loss of class 2 communications with the PCM. |
When the coolant temperature is greater than 107°C (225°F), the BCM will command the illumination of the CHECK GAGES indicator.
Fuel Gage
The PCM sends fuel level percent to the BCM via class 2. The IPC displays
the fuel level as determined by the BCM. The IPC receives a class 2 message
from the BCM indicating the fuel level percent. The fuel gage defaults to E (empty)
if:
| • | The PCM detects a malfunction in the fuel level sensor circuit. |
| • | The IPC detects a loss of class 2 communications with the BCM. |
| • | The BCM detects a loss of class 2 commumications with the PCM. |
When the fuel level is less than 4%, the CHECK GAGES indicator illuminates.
Odometer
The IPC contains a season odometer and a trip odometer. Momentarily
press the trip/reset switch on the IPC in order to toggle between the season
odometer and the trip odometer. Press the trip/reset switch for greater
than 2 seconds, while the trip odometer is displayed, in order
to reset the trip odometer. The IPC displays the vehicle mileage and
trip mileage as determined by the BCM. The BCM calculates the mileage
based on the vehicle speed signal circuit from the PCM. The odometer
will display 'error' if an internal IPC memory failure is detected
or there is a loss of class 2 communication.
Speedometer
The IPC displays the vehicle speed based on the information from the
BCM. The BCM receives a class 2 message from the PCM
indicating the vehicle speed. The PCM calculates the vehicle speed
based on the class 2 message indicating the wheel reference
speed from the EBCM if:
| • | The PCM detects a malfunction in the vehicle speed sensor circuit. |
| • | The IPC detects a loss of class 2 communications with the
BCM. |
The speedometer defaults to 0 km/h (0 mph) if the BCM
detects a loss of class 2 communications with both the PCM and the
EBCM.
Tachometer
The IPC displays the engine speed as determined by the BCM via a class 2
message. The BCM receives a class 2 message from the PCM indicating the engine
speed. The tachometer will default to 0 RPM if:
| • | The PCM detects a malfunction in the engine speed sensor circuit. |
| • | The IPC detects a loss of class 2 communications with the BCM. |
| • | The BCM detects a loss of class 2 communications with the PCM. |
