Grand Caravan V6-4.0L (2008)
Tachometer: Description and Operation
Description
DESCRIPTION
A tachometer is standard equipment on all Dodge premium and Chrysler instrument clusters. There is no tachometer in the Dodge base instrument
cluster. On Dodge vehicles, the tachometer is located to the right of the speedometer in the instrument cluster. On Chrysler vehicles, the tachometer is
located just to the right of center in the instrument cluster, between the speedometer and the temperature gauge. The tachometer consists of a movable
gauge needle or pointer controlled by the instrument cluster circuitry and a fixed 230 degree scale on the gauge dial face that reads left-to-right either
from 0 to 7 for vehicles with a gasoline engine, or from 0 to 6 for vehicles with a diesel engine. The text RPM X 1000 imprinted on the cluster
overlay directly below the center of the scale identifies that each number on the tachometer scale is to be multiplied by 1000 rpm.
On Dodge vehicles, the tachometer graphics are gray and black against a white field except for several red graduations that designate the red line area at
the high end of the gauge scale. On Chrysler vehicles, the tachometer graphics are gray and black against a silver field except for several red graduations
that designate the red line area at the high end of the gauge scale. In each case, the graphics are clearly visible within the instrument cluster in daylight.
When illuminated from behind by the panel lamps dimmer controlled cluster illumination lighting with the exterior lamps turned ON, the Dodge gauges
all retain their unilluminated colors and appearance, while the Chrysler gauge fields acquire a blue-green appearance from the blue-green colored
electro-luminescent lighting.
The Dodge premium and Chrysler clusters use black gauge needles, and are not illuminated. These clusters are illuminated by an integral
electro-luminescent lamp, which illuminates the gauge field and causes the gauge graphics and gauge needle to appear silhouetted against the field when
the exterior lighting is turned ON.
The tachometer is serviced as a unit with the instrument cluster.
