Dodge Nitro. Manual - part 816

The water-in-fuel indicator is serviced as a unit with the instrument cluster.

OPERATION 

WATER-IN-FUEL INDICATOR 

The water-in-fuel indicator gives an indication to the vehicle operator when there is excessive water detected in 
the diesel fuel. This indicator is controlled by the instrument cluster circuit board based upon cluster 
programming and electronic messages received over the Controller Area Network (CAN) data bus from the 
Powertrain Control Module (PCM). 

The water-in-fuel 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 water-in-fuel 
indicator for the following reasons: 



Water-In-Fuel Indicator Lamp-On Message - Each time the cluster receives an electronic water-in-
fuel indicator lamp-ON message from the PCM indicating there is excessive water in the diesel fuel 
system, the water-in-fuel indicator will be illuminated. The indicator remains illuminated until the cluster 
receives a lamp-OFF message from the PCM, or until the ignition switch is turned to the OFF position, 
whichever occurs first.  

The PCM continually monitors the water-in-fuel sensor to determine whether there is excessive water in the 
diesel fuel system. The PCM then sends the proper electronic water-in-fuel message to the Electro Mechanical 
Instrument Cluster (EMIC) (also known as the Cab Compartment Node/CCN). 

For proper diagnosis of the water-in-fuel-sensor, the PCM, the EMIC, the CAN data bus or the electronic 
communication related to water-in-fuel indicator operation a diagnostic scan tool is required. Refer to the 
appropriate diagnostic information. 

 

2007 Dodge Nitro R/T 

2007 ACCESSORIES AND EQUIPMENT Instrument Cluster - Service Information - Nitro

  

2007 MANUAL TRANSMISSION

NSG370 - Diagnosis & Overhaul - Nitro 

NSG370 

DIAGNOSIS AND TESTING 

MANUAL TRANSMISSION - NSG370 

LOW LUBRICANT LEVEL 

A low transmission lubricant level is generally the result of a leak, inadequate lubricant fill or incorrect 
lubricant level check. 

Rear transmission leaks will be from the oil seals or component mating surfaces. 

Front transmission leaks will be from the front input shaft retainer seal. Lubricant may drip from the clutch 
housing after extended operation. If leak is severe, it may contaminate the clutch disc. 

Lubricant level check can only be made when the vehicle is level and allowing the lubricant to settle for a 
minute before checking. This will ensure an accurate check and avoid an under filled or over filled condition. 

HARD SHIFTING 

Hard shifting is usually caused by low lubricant level, improper or contaminated lubricants. This will cause 
noise, excessive wear, internal bind, and hard shifting. Substantial lubricant leaks can result in gear, shift rail, 
synchro, and bearing damage. The first indications of component damage is usually hard shifting and noise. 

Shift component damage, clutch adjustment, worn pressure plate or disc are also causes of increased shift effort. 
If clutch problem is advanced, gear clash during shifts can result. Worn or damaged synchronizer rings can 
cause gear clash when shifting into any forward gear. In some new or rebuilt transmissions, new synchro rings 
may tend to stick slightly causing hard or noisy shifts. In most cases, this condition will decline as the rings 
wear-in. 

TRANSMISSION NOISE 

Most manual transmissions make some noise during normal operation. Rotating gears generate a mild whine 
that is audible, but generally only at extreme speeds. 

Severe, highly audible transmission noise is generally the initial indicator of a lubricant problem. Insufficient, 
improper or contaminated lubricant will promote rapid wear of gears, synchronizers, shift rails, forks and 
bearings. The overheating caused by a lubricant problem, can also lead to gear and bearing damage. 

STANDARD PROCEDURE 

STANDARD PROCEDURE-DRAIN & FILL 

 

2007 Dodge Nitro R/T 

2007 MANUAL TRANSMISSION NSG370 - Diagnosis & Overhaul - Nitro

  

 

2007 Dodge Nitro R/T 

2007 MANUAL TRANSMISSION NSG370 - Diagnosis & Overhaul - Nitro

  

Fig. 1: Drain Plug 
Courtesy of CHRYSLER LLC 

1. With vehicle in neutral, position vehicle on hoist.  

2. Remove drain plug (1) and drain fluid. 

 

2007 Dodge Nitro R/T 

2007 MANUAL TRANSMISSION NSG370 - Diagnosis & Overhaul - Nitro

  

Fig. 2: Fill Plug 
Courtesy of CHRYSLER LLC 

3. Install drain plug and remove fill plug (1).  

4. Fill transmission with 1.5 L (3.17 pts.) of Mopar® Manual Transmission Lubricant MS-9224 or to the 

bottom of the fill plug (1) hole.  

REMOVAL 

NSG370 

 

2007 Dodge Nitro R/T 

2007 MANUAL TRANSMISSION NSG370 - Diagnosis & Overhaul - Nitro