Dodge Nitro. Manual - part 815

 

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Dodge Nitro. Manual - part 815

 

 

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

  

The instrument cluster will turn ON the turn signal indicators for the following reasons: 

Turn Signal Indicator Lamp-On Message - Each time the cluster receives an electronic right or left 
turn signal-ON
 message from the TIPM over the CAN data bus, the appropriate turn signal indicator will 
be flashed ON and OFF. The TIPM also sends the appropriate electronic message to the cluster to control 
the flash rate of the turn signal indicators, as well as to control the click rate of an electromechanical relay 
soldered onto the cluster electronic circuit board that emulates the sound emitted by a conventional turn 
signal flasher. The turn signal indicators continue to flash ON and OFF until the cluster receives a lamp-
OFF message from the TIPM, or until the ignition switch is turned to the OFF position, whichever occurs 
first.  

Hazard Warning Indicator Lamp-On Message - Each time the cluster receives an electronic hazard 
warning-ON
 message from the TIPM over the CAN data bus, both turn signal indicators will be flashed 
ON and OFF. The TIPM also sends the appropriate electronic messages to the cluster to control the flash 
rate of the right and left turn signal indicators, as well as to control the click rate of an electromechanical 
relay soldered onto the cluster electronic circuit board that emulates the sound emitted by a conventional 
hazard warning flasher. The turn signal indicators continue to flash ON and OFF until the cluster receives 
a hazard warning-OFF message from the TIPM.  

Turn Signal-On Textual Warning Message - When the cluster detects that a turn signal has been active 
continuously for 1.6 kilometers (1 mile) with the vehicle speed greater than 22 kilometers-per-hour (15 
miles-per hour) a chime tone will be sounded and, if the vehicle is so equipped, a TURN SIGNAL ON 
textual message will appear within the instrument cluster reconfigurable Vacuum Fluorescent Display 
(VFD) unit.  

Lamp Out Mode - If the TIPM detects an ineffective turn signal lamp or circuit, it increases the flash 
rate for the remaining operative turn signals and sends an electronic message to the instrument cluster. To 
provide an indication of the problem to the vehicle operator the instrument cluster then increases the flash 
rate of the turn signal indicators, the click rate of the electromechanical relay and, if the vehicle is so 
equipped, displays a TURN SIGNAL LAMP OUT textual message in the reconfigurable VFD unit.  

Actuator Test - Each time the cluster is put through the actuator test, the turn signal indicators will be 
turned ON, then OFF again during the bulb check portion of the test to confirm the functionality of each 
LED and the cluster control circuitry.  

The Electro Mechanical Instrument Cluster (EMIC) (also known as the Cab Compartment Node/CCN) 
continually monitors the electronic messages from the TIPM to determine the proper turn signal and hazard 
warning indicator operation. 

For proper diagnosis of the turn signal and hazard warning system, the multi-function switch, the TIPM, the 
EMIC, the CAN data bus or the electronic communication related to turn signal indicator operation a diagnostic 
scan tool is required. Refer to the appropriate diagnostic information. 

WAIT-TO-START INDICATOR 

DESCRIPTION 

WAIT-TO-START INDICATOR 

 

2007 Dodge Nitro R/T 

2007 ACCESSORIES AND EQUIPMENT Instrument Cluster - Service Information - Nitro

  

Fig. 41: Wait-To-Start Indicator 
Courtesy of CHRYSLER LLC 

A wait-to-start indicator is standard equipment on all instrument clusters. However, on vehicles not equipped 
with an optional diesel engine, this indicator is electronically disabled. This indicator is located near the bottom 
of the speedometer dial face of the cluster overlay, just right of center. 

The wait-to-start indicator consists of a stencil-like cutout of the International Control and Display Symbol icon 
for Diesel Preheat 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 wait-to-start indicator is serviced as a unit with the instrument cluster. 

OPERATION 

WAIT-TO-START INDICATOR 

The wait-to-start indicator gives an indication to the vehicle operator when the diesel engine is too cool for 
efficient and reliable engine starting, and the engine glow plugs are energized in their pre-heat operating mode. 
This indicator is controlled by a transistor on the instrument cluster circuit board based upon cluster 
programming and electronic messages received by the cluster from the Powertrain Control Module (PCM) over 
the Controller Area Network (CAN) data bus. 

The wait-to-start indicator Light Emitting Diode (LED) is completely controlled by the instrument cluster logic 
circuit, and that logic will only allow this indicator to operate when the instrument cluster receives a battery 
current input on the fused ignition switch output (run-start) circuit. Therefore, the LED will always be OFF 
when the ignition switch is in any position except ON or START. The LED only illuminates when it is provided 
a path to ground by the instrument cluster transistor. The instrument cluster will turn ON the wait-to-start 
indicator for the following reasons: 

Wait-To-Start Indicator Lamp-On Message - Each time the cluster receives an electronic wait-to-start 
indicator lamp-ON
 message from the PCM indicating that the air temperature is too cool for efficient 
and reliable engine starting and the glow plugs are energized in their pre-heat mode, the wait-to-start 
indicator will be illuminated. The indicator remains illuminated until the cluster receives a lamp-OFF 

 

2007 Dodge Nitro R/T 

2007 ACCESSORIES AND EQUIPMENT Instrument Cluster - Service Information - Nitro

  

message from the PCM, until the PCM detects that the engine is running, or until the ignition switch is 
turned to the OFF position, whichever occurs first.  

Actuator Test - Each time the cluster is put through the actuator test, the wait-to-start indicator will be 
turned ON, then OFF again during the bulb check portion of the test to confirm the functionality of the 
LED and the cluster control circuitry.  

The PCM continually monitors the glow plug control circuits to determine when they are energized in their pre-
heat operating mode. The PCM then sends the proper lamp-ON or lamp-OFF message to the Electro 
Mechanical Instrument Cluster (EMIC) (also known as the Cab Compartment Node/CCN). 

For proper diagnosis of the glow plug control circuits, the PCM, the EMIC, the CAN data bus or the electronic 
communication related to wait-to-start indicator operation a diagnostic scan tool is required. Refer to the 
appropriate diagnostic information. 

WATER-IN-FUEL INDICATOR 

DESCRIPTION 

WATER-IN-FUEL INDICATOR 

Fig. 42: Identifying Water-In-Fuel Indicator 
Courtesy of CHRYSLER LLC 

A water-in-fuel indicator is standard equipment on all instrument clusters. However, on vehicles not equipped 
with an optional diesel engine, this indicator is electronically disabled. This indicator is located near the bottom 
of the speedometer dial face of the cluster overlay, just left of center. 

The water-in-fuel indicator consists of a stencil-like cutout of the International Control and Display Symbol 
icon for Water In Fuel 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.

 

2007 Dodge Nitro R/T 

2007 ACCESSORIES AND EQUIPMENT Instrument Cluster - Service Information - Nitro

  

 

 

 

 

 

 

 

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