Dakota Quad Cab 2WD V8-4.7L VIN N (2001)
Compass and Temperature Display
This display provides the outside temperature and one of eight compass readings to indicate the direction the vehicle is facing.
Trip Odometer (ODO)
Shows the distance traveled since the last reset.
Average Fuel Economy (AVE ECO)
Shows the average fuel economy in MPG (miles per gallon) or L/100Km since the last reset.
Instant Fuel Economy
Shows the fuel economy for the last few seconds in MPG or L/100Km.
Distance to Empty (DTE)
Shows the estimated distance that can be traveled with the fuel remaining in the tank. This is calibrated using the MPG for the last few minutes.
Elapsed Time (ET)
Shows the accumulated ignition on time since the last reset.
Step Button
Press this button to cycle through all the mini-trip computer displays.
US/M Button
Press this button to convert all vehicle displays from US to Metric to US.
To Reset the Display
Press the Step and US/M buttons simultaneously for at least two seconds and all resettable conditions will be reset. This will occur only if a
resettable function (AVG ECO, ECO, ET) is currently being displayed.
Automatic Compass Calibration
This compass is self calibrating which eliminates the need to manually set the compass. When the vehicle is new, the compass may appear erratic
and the CAL symbol will be displayed. After completing three 360 turns in an area free from large metal or metallic objects, the CAL symbol will
turn OFF and the compass will function normally.
Compass Variance
Compass Variance is the difference between Magnetic North and Geographic North. In some areas of the country, the difference between
Magnetic and Geographic North is great enough to cause the compass to give false readings. If this occurs, the compass variance must be set.
To set the variance: Turn the ignition ON and set display to Comp./Temp. While pressing the US/M button, press the STEP button for
approximately five seconds. The "WAR" symbol will light and the last variance zone number will be displayed. Press the US/Metric Button to
select the proper variance zone as shown on the map. Press the Step button to set the new variance zone and resume normal operation.
ELECTRO/MECHANICAL INSTRUMENT CLUSTER (EMIC)
The Instrument Cluster contains a Fuel, Voltmeter, Coolant Temp, and Oil Pressure gauge, a Tachometer and a Speedometer. With the exception
of the Voltmeter, the cluster positions the gauges with PCI Bus messages received from the PCM. The Voltmeter operates directly OFF of the
Fused B+ Switched Ignition Output circuit that supplies ignition voltage for the cluster.
The Instrument Cluster also contains warning indicators that are illuminated by hard wired inputs or by messages received from other modules on
the PCI Bus.
The Trip/Total Odometer is a Vacuum Fluorescent Display (VF) that is controlled by PCI Bus messages received from the PCM.
The cluster illumination lamps are hard wired in the Instrument Cluster. When the Park or Head-lamps are turned ON, the cluster receives a
dimmed battery feed from the Headlamp Switch. The cluster I/O Processor controls the VF display dimming and also sends dimming level
messages on the PCI Bus.
The EMIC will communicate with the DRB III to display PCI Engine Info, PCI Bus Info, and certain input/outputs. Cluster diagnostic capabilities
that the DRB III will actuate are limited to the Cluster Calibration Points for the gauges. The DRB III can also extract active and stored Diagnostic
Trouble Codes (DTC) from the Instrument Cluster.
The EMIC is also capable of performing a diagnostic Self-Test that is actuated by depressing and holding the Odometer trip reset stalk while
cycling the ignition from the OFF to the ON position. After the cluster Odometer displays CHEC, releasing the reset stalk begins the test. The
cluster will then position all of the gauges at specified calibration points and will illuminate all the PCI Bus controlled indicators. The cluster will
also illuminate each segment of the VF display.
The EMIC can verify communications with the PCM, ID the module, or change the country code using the DRB III.
