Wrangler 2WD V6-3.8L (2008)
Malfunction Indicator Lamp: Description and Operation
Description
DESCRIPTION
A Malfunction Indicator Lamp (MIL) is standard equipment on all instrument clusters. For domestic market vehicles, this indicator is located within the
odometer Vacuum Fluorescent Display (VFD) unit. For export market vehicles, this indicator is located on the right side of the cluster overlay near the
top, above the engine coolant temperature gauge.
The domestic MIL indicator consists of the International Control and Display Symbol icon for Engine in the VFD display. The odometer VFD unit is
soldered onto the cluster electronic circuit board, and is visible through a window with a smoked clear lens located on the lower edge of the tachometer
dial face of the cluster overlay. The dark lens over the VFD unit prevents the indicator from being clearly visible when it is not illuminated. The MIL
icon appears in an amber color when it is illuminated by the cluster electronic circuit board, and the MIL as well as all of the odometer VFD information
is illuminated at full (daytime) brightness and cannot be dimmed until the MIL is extinguished.
The export MIL indicator consists of a stencil-like cutout of the International Control and Display Symbol icon for Engine in the opaque layer of the
instrument cluster overlay. The dark outer layer of the overlay prevents the indicator from being clearly visible when it is not illuminated. An amber
Light Emitting Diode (LED) behind the cutout in the opaque layer of the overlay causes the indicator to appear in amber through the translucent outer
layer of the overlay when it is illuminated from behind by the LED, which is soldered onto the instrument cluster electronic circuit board.
The MIL is serviced as a unit with the instrument cluster.
