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 Component Identifier (CID). Each diagnostic fault condition is represented by a Failure Mode Identifier (FMI). The two identifiers are combined in order to form a CID-FMI description. This description 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. For more information, refer to the Electronic Troubleshooting Guide for this engine.
As a diagnostic fault condition occurs, the ECM sends the CID-FMI 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 Code Information for 3456 Generator Set Engines | |
|---|---|
| CID-FMI | Description |
| 01-05 | "Injector Cylinder 1 Open Circuit" |
| 01-06 | "Injector Cylinder 1 Short" |
| 02-05 | "Injector Cylinder 2 Open Circuit" |
| 02-06 | "Injector Cylinder 2 Short" |
| 03-05 | "Injector Cylinder 3 Open Circuit" |
| 03-06 | "Injector Cylinder 3 Short" |
| 04-05 | "Injector Cylinder 4 Open Circuit" |
| 04-06 | "Injector Cylinder 4 Short" |
| 05-05 | "Injector Cylinder 5 Open Circuit" |
| 05-06 | "Injector Cylinder 5 Short" |
| 06-05 | "Injector Cylinder 6 Open Circuit" |
| 06-06 | "Injector Cylinder 6 Short" |
| 91-08 | "Throttle Position Signal Abnormal" |
| 100-03 | "Engine Oil Pressure Open/Short to +Batt" |
| 100-04 | "Engine Oil Pressure Short To Ground" |
| 100-13 | "Engine Oil Pressure Calibration Required" |
| 110-03 | "Engine Coolant Temperature Open/Short To +Batt" |
| 110-04 | "Engine Coolant Temperature Short To Ground" |
| 168-00 | "System Voltage High" |
| 168-01 | "System Voltage Low" |
| 168-02 | "System Voltage Intermittent" |
| 172-03 | "Intake Manifold Air Temp Open/Short To +Batt" |
| 172-04 | "Intake Manifold Air Temp Short To Ground" |
| 174-03 | "Fuel Temperature Open/Short To +Batt" |
| 174-04 | "Fuel Temperature Short To Ground" |
| 175-03 | "Engine Oil Temperature Open/Short To +Batt" |
| 175-04 | "Engine Oil Temperature Short To Ground" |
| 190-02 | "Loss Of Engine Speed Signal (Top Speed Timing Sensor)" |
| 190-08 | "Engine Speed Signal Abnormal (Top Speed Timing Sensor)" |
| 248-09 | "CAT Data Link Communications" |
| 253-02 | "Personality Module Mismatch" |
| 254-12 | "Electronic Control Module Error" |
| 261-13 | "Engine Timing Calibration Required" |
| 262-03 | "5 Volt Sensor Supply Short To +Batt" |
| 262-04 | "5 Volt Sensor Supply Short To Ground" |
| 263-03 | "Digital Sensor Supply Short To +Batt" |
| 263-04 | "Digital Sensor Supply Short To Ground" |
| 268-02 | "Check Programmable Parameters" |
| 273-00 | "Turbo Outlet Pressure Above Normal" |
| 273-03 | "Turbo Outlet Pressure Open/Short To +Batt" |
| 273-04 | "Turbo Outlet Pressure Short To Ground" |
| 273-13 | "Turbo Outlet Pressure Calibration Required" |
| 274-03 | "Atmospheric Pressure Open/Short To +Batt" |
| 274-04 | "Atmospheric Pressure Short To Ground" |
| 274-13 | "Atmospheric Pressure Calibration Required" |
| 336-02 | "Incorrect ECS Switch Inputs" |
| 337-02 | "Incorrect Remote E-Stop Switch Inputs" |
| 342-02 | "Loss Of Secondary Engine Speed Signal (Bottom Speed /Timing Sensor)" |
| 342-08 | "Secondary Engine Speed Signal Abnormal (Bottom Speed/Timing Sensor)" |
| 444-05 | "Start Relay Open Circuit" |
| 444-06 | "Start Relay Short To Ground" |
| 446-05 | "Air Shut-off Relay Open" |
| 446-06 | "Air Shut-off Relay Short" |
| 460-03 | "Filtered Fuel Pressure Open/Short To +Batt" |
| 460-04 | "Filtered Fuel Pressure Short To Ground" |
| 460-13 | "Filtered Fuel Pressure Calibration Required" |
| 535-08 | "Exhaust Temperature Sensor Noisy Signal" |
| 545-05 | "Ether Start Relay Open/Short To +Batt" |
| 545-06 | "Ether Start Relay Short To Ground" |
Note: The Generator Set Control (GSC) performs the primary monitoring and control functions for the engine and for the generator. Do not confuse diagnostic codes that are generated by the GSC with diagnostic codes that are generated by the engine ECM. The GSC will display an "E" with the diagnostic code when the code is generated by the engine ECM. Refer to Operation and Maintenance Manual, "SR4B Generators And Control Panals" for more information.