Instrument Cluster
The instrument cluster receives information via the Class II serial data link from the body control module (BCM), the powertrain control module (PCM), and the sensing and diagnostic module (SDM). The information from the electronic brake/traction control module (EBTCM) is sent to the BCM via Key Word 2000, where it is converted into a Class II message and sent to the cluster.
Body Control Module
Telltales | Gages |
|---|---|
Brake | Odometer |
Daytime Running Lamps (DRL) | Fuel Gage |
High Beam | -- |
Low Brake Fluid | -- |
Low Fuel | -- |
Security | -- |
Service Wrench | -- |
Decklid/Liftgate Ajar | -- |
Seat Belt | -- |
Powertrain Control Module
The powertrain control module (PCM) sends messages to the cluster to control the following:
Telltales | Gages |
|---|---|
Service Engine Soon (MIL) | Speedometer |
Speedometer | Tachometer |
Tachometer | Coolant Gage |
Change Oil Soon | -- |
Oil Pressure | |
Coolant Temperature | -- |
Low Traction | -- |
Low Coolant | -- |
Service Wrench | -- |
Generator (Battery) | -- |
Upshift | -- |
Sensing and Diagnostic Module
The sensing and diagnostic module (SDM) sends a message to the cluster to control the air bag telltales.
Electronic Brake Traction Control Module (EBTCM)
The electronic brake traction control module (EBTCM) sends a message to the cluster to control the following telltales:
| • | Brake |
| • | ABS |
| • | Service wrench |
Speedometer and Tachometer
The input information for the speedometer and tachometer is supplied over the Class II serial data link by the powertrain control module (PCM).
Odometer
The odometer is an electronic digital display. There is one odometer display. The trip odometer and total odometer will show in this display area. The push button in the lower right side of the speedometer is used to toggle between the trip and total odometer readings. To reset the trip odometer, push and hold the button down for at least two seconds. The total odometer display has six digits with no decimal display. The trip odometer has four digits including a decimal point and indicates tenths of a mile or kilometer.
Fuel Gauge
The input information for the fuel gage is sent over the Class II serial data link by the body control module (BCM). The cluster will position the needle on the gage based on the information sent by the BCM.
