Fig. 40: Turn Signal Indicator
Courtesy of CHRYSLER LLC
Two turn signal indicators, one right and one left, are standard equipment on all instrument clusters. The turn
signal indicators are located near the bottom of the speedometer dial face of the cluster overlay, one on the right
and one on the left. Illumination of this indicator may also be accompanied by the display of a turn signal-on
warning textual message in the cluster reconfigurable Vacuum Fluorescent Display (VFD) unit.
Each turn signal indicator consists of a stencil-like cutout of the International Control and Display Symbol icon
for Turn Warning in the opaque layer of the instrument cluster overlay. The dark outer layer of the overlay
prevents these icons from being clearly visible when they are not illuminated. A green Light Emitting Diode
(LED) behind each cutout in the opaque layer of the overlay causes the indicator to appear in green 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 turn signal indicators are serviced as a unit with the instrument cluster.
OPERATION
TURN SIGNAL INDICATOR
The turn signal indicators give an indication to the vehicle operator that the turn signal (left or right indicator
flashing) or hazard warning (both left and right indicators flashing) have been selected and are operating. These
indicators are controlled by transistors on the instrument cluster electronic circuit board based upon the cluster
programming and electronic messages received from the Totally Integrated Power Module (TIPM) over the
Controller Area Network (CAN) data bus.
Each turn signal indicator Light Emitting Diode (LED) is completely controlled by the instrument cluster logic
circuit, and that logic will allow this indicator to operate whenever the instrument cluster receives a battery
current input on the fused B(+) circuit. Therefore, each LED can be illuminated regardless of the ignition switch
position. The LED only illuminates when it is provided a path to ground by the instrument cluster transistor.
2007 Dodge Nitro R/T
2007 ACCESSORIES AND EQUIPMENT Instrument Cluster - Service Information - Nitro