Engine Temperature Gauge: Description
An engine coolant temperature gauge is standard equipment on all instrument clusters. This gauge is located in the lower right corner of the instrument cluster, to the right of the tachometer. This gauge consists of a movable gauge needle or pointer controlled by the instrument cluster circuitry and a fixed 90 degree scale on the cluster overlay that reads left-to-right from "C" (or Cold) to "H" (or Hot) for all engines. An International Control and Display Symbol icon for "Engine Coolant Temperature" is located on the cluster overlay, in the center of the gauge directly above the hub of the gauge needle. See Fig 1.
The engine coolant temperature gauge text and graphics are white against a black field, while the major and minor scale increments are black against a silver field, except for a pair of red zone increments at the far right (Hot) end of the gauge scale. All text, graphics and increments 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 white text and graphics and the major black increments appear blue-green, while the major red increments still appear red. The minor increments are not illuminated. The red gauge needle is internally illuminated.
Gauge illumination is provided by replaceable incandescent bulb and bulb holder units located on the instrument cluster electronic circuit board. The engine coolant temperature gauge is serviced as a unit with the instrument cluster.