GEAR AS-PUMP 7G2244 - Caterpillar

The Electronic Control Module (ECM) has the ability to diagnose many different fault conditions that are associated with the electronic components that are found on the engine. Each electronic component is represented by a Suspect Parameter Number(SPN). Each diagnostic fault condition is represented by a Failure Mode Identifier (FMI). The two identifiers are combined in order to form an SPN-FMI code. This is called a diagnostic code. When a problem occurs within the engine electronics, the diagnostic code is used to pass diagnostic information to the operator.As a diagnostic fault condition occurs, the ECM sends the SPN-FMI code to the Generator Set Control+ (GSC+). The GSC+ communicates the diagnostic information to the operator. All of the possible diagnostic fault codes for this engine and the fault code descriptions are listed below:Diagnostic Codes
Diagnostic codes alert the operator that a problem in the electronic system has been detected. Diagnostic codes are also used by the service technician to identify the nature of the problem. Caterpillar Electronic Technician (ET) is a software program that is designed to run on a personal computer. The software can be used by the service technician in order to view the diagnostic code information for an ECM. Diagnostic codes may consist of the component identifier (CID), and the failure mode identifier (FMI).Component Identifier (CID) - The CID indicates the component that generated the code. For example, the CID number 1 identifies the fuel injector for the number one cylinder.Failure Mode Identifier (FMI) - The FMI indicates the type of failure.Suspect Parameter Number (SPN) - The SPN is a three digit code which is assigned to each component in order to identify data via the data link to the ECM. This is used on the diagnostics for the CAN data link. There is a troubleshooting procedure for every diagnostic code. Refer to Troubleshooting, "Troubleshooting With A Diagnostic Code".
Table 1
Cross-Reference for SPN-FMI Code to CID-FMI    
SPN/FMI    CID-FMI    Description of Code    
91-08     91-08     Throttle Position Sensor : Abnormal Frequency, Pulse Width, or Period    
94-03     94-03     Fuel Delivery Pressure Sensor : Voltage Above Normal    
94-04     94-04     Fuel Delivery Pressure Sensor : Voltage Below Normal    
100-03     100-03     Engine Oil Pressure Sensor : Voltage Above Normal    
100-04     100-04     Engine Oil Pressure Sensor : Voltage Below Normal    
100-10     100-10     Engine Oil Pressure Sensor : Abnormal Rate of Change    
102-03     1785-03     Intake Manifold Pressure Sensor : Voltage Above Normal    
102-04     1785-04     Intake Manifold Pressure Sensor : Voltage Below Normal    
102-10     1785-10     Intake Manifold Pressure Sensor : Abnormal Rate of Change    
105-03     172-03     Intake Manifold Air Temperature Sensor : Voltage Above Normal    
105-04     172-04     Intake Manifold Air Temperature Sensor : Voltage Below Normal    
108-03     274-03     Atmospheric Pressure Sensor : Voltage Above Normal    
108-04     274-04     Atmospheric Pressure Sensor : Voltage Below Normal    
110-03