Active Diagnostic Codes
An Active diagnostic code represents a problem with the electronic control system. This problem should be corrected as soon as possible. When an active diagnostic code is generated, a display module such as the Vital Information Management System (VIMS) may produce a warning.
Logged Diagnostic Codes
When the ECM generates a diagnostic code, the ECM logs the code in permanent memory. The ECM has an internal diagnostic clock. The ECM will record the hour of the first occurrence of the diagnostic code. The ECM will record the hour of the last occurrence of the diagnostic code. The ECM will record the number of occurrences of the code. This information is a valuable indicator for troubleshooting intermittent problems. Any Logged diagnostic codes will automatically be deleted if no additional occurrences are recorded in 100 hours. Some diagnostic codes may be easily triggered. Some diagnostic codes may log occurrences that did not result in complaints. The most likely cause of an intermittent problem is a faulty connection or damaged wiring. The next likely cause is a component failure. The least likely cause is the failure of the ECM. Diagnostic codes that are logged repeatedly may indicate a problem that needs special investigation.
If the symptoms continue, use the proper procedure for troubleshooting the symptoms that have been experienced by the operator.
Note: Always clear logged diagnostic codes after you investigate the problem which generated the code. Always clear logged diagnostic codes after you correct the problem which generated the code.
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| Illustration 1 | g00592364 |
The diagram indicates output voltage from the coolant temperature sensor. The Cat ET can be used to turn ON the engine monitoring for a specific sensor. When the monitoring is turned ON, the sensor's value and any diagnostic event code will appear on the Cat ET. When the features are turned OFF, the engine monitoring will be disabled, but the event is logged in the ECM.
Diagnostic Terminology
| 3500B System Diagnostic Codes | ||
| CID (1) | FMI (2) | Description |
| 0001 | 05 | Injector Cylinder 1 open circuit |
| 0001 | 06 | Injector Cylinder 1 short |
| 0002 | 05 | Injector Cylinder 2 open circuit |
| 0002 | 06 | Injector Cylinder 2 short |
| 0003 | 05 | Injector Cylinder 3 open circuit |
| 0003 | 06 | Injector Cylinder 3 short |
| 0004 | 05 | Injector Cylinder 4 open circuit |
| 0004 | 06 | Injector Cylinder 4 short |
| 0005 | 05 | Injector Cylinder 5 open circuit |
| 0005 | 06 | Injector Cylinder 5 short |
| 0006 | 05 | Injector Cylinder 6 open circuit |
| 0006 | 06 | Injector Cylinder 6 short |
| 0007 | 05 | Injector Cylinder 7 open circuit |
| 0007 | 06 | Injector Cylinder 7 short |
| 0008 | 05 | Injector Cylinder 8 open circuit |
| 0008 | 06 | Injector Cylinder 8 short |
| 0009 | 05 | Injector Cylinder 9 open circuit |
| 0009 | 06 | Injector Cylinder 9 short |
| 0010 | 05 | Injector Cylinder 10 open circuit |
| 0010 | 06 | Injector Cylinder 10 short |
| 0011 | 05 | Injector Cylinder 11 open circuit |
| 0011 | 06 | Injector Cylinder 11 short |
| 0012 | 05 | Injector Cylinder 12 open circuit |
| 0012 | 06 | Injector Cylinder 12 short |
| 0013 | 05 | Injector Cylinder 13 open circuit |
| 0013 | 06 | Injector Cylinder 13 short |
| 0014 | 05 | Injector Cylinder 14 open circuit |
| 0014 | 06 | Injector Cylinder 14 short |
| 0015 | 05 | Injector Cylinder 15 open circuit |
| 0015 | 06 | Injector Cylinder 15 short |
| 0016 | 05 | Injector Cylinder 16 open circuit |
| 0016 | 06 | Injector Cylinder 16 short |
| 0091 | 08 | Throttle Position signal abnormal |
| 0101 | 03 | Crankcase Pressure open/short to +batt |
| 0101 | 04 | Crankcase Pressure short to ground |
| 0101 | 13 | Crankcase Pressure calibration required |
| 0110 | 03 | Engine Coolant Temperature open/short to +batt |
| 0110 | 04 | Engine Coolant Temperature short to ground |
| 0168 | 00 | System Voltage High |
| 0168 | 01 | System Voltage Low |
| 0168 | 02 | System Voltage intermittent |
| 0190 | 02 | Loss of Engine Speed signal |
| 0190 | 03 | Engine Speed open/short to +batt |
| 0190 | 08 | Engine Speed signal abnormal |
| 0253 | 02 | Personality Module mismatch |
| 0254 | 12 | Electronic Control Module Error |
| 0261 | 13 | Engine Timing calibration required |
| 0262 | 03 | 5 Volt Sensor DC Power Supply short to +batt |
| 0262 | 04 | 5 Volt Sensor DC Power Supply short to ground |
| 0263 | 03 | Digital Sensor supply short to +batt |
| 0263 | 04 | Digital Sensor supply short to ground |
| 0267 | 02 | Incorrect Engine Shutdown Switch inputs |
| 0268 | 02 | Check Programmable Parameters |
| 0273 | 00 | Turbo Outlet Pressure above normal |
| 0273 | 03 | Turbo Outlet Pressure open/short to +batt |
| 0273 | 04 | Turbo Outlet Pressure short to ground |
| 0273 | 13 | Turbo Outlet Pressure calibration required |
| 0274 | 03 | Atmospheric Pressure open/short to +batt |
| 0274 | 04 | Atmospheric Pressure short to ground |
| 0274 | 13 | Atmospheric Pressure calibration required |
| 0275 | 03 | Right Turbo Inlet Pressure open/short to +batt |
| 0275 | 04 | Right Turbo Inlet Pressure short to ground |
| 0275 | 13 | Right Turbo Inlet Pressure calibration required |
| 0276 | 03 | Left Turbo Inlet Pressure open/short to +batt |
| 0276 | 04 | Left Turbo Inlet Pressure short to ground |
| 0276 | 13 | Left Turbo Inlet Pressure calibration required |
| 0277 | 08 | Timing Calibration signal abnormal |
| 0291 | 05 | Engine Cooling Fan Solenoid open circuit |
| 0291 | 06 | Engine Cooling Fan Solenoid short to ground |
| 0296 | 09 | Unable to communicate with Transmission ECM |
| 0298 | 02 | Incorrect Service Brake Pedal Switch inputs |
| 0338 | 05 | Pre-Lube Relay open circuit |
| 0338 | 06 | Pre-Lube Relay short to ground |
| 0542 | 02 | Unfiltered Engine Oil Pressure misinstalled |
| 0542 | 03 | Unfiltered Engine Oil Pressure open/short to +batt |
| 0542 | 04 | Unfiltered Engine Oil Pressure short to ground |
| 0542 | 13 | Unfiltered Engine Oil Pressure cal required |
| 0543 | 02 | Filtered Engine Oil Pressure misinstalled |
| 0543 | 03 | Filtered Engine Oil Pressure open/short to +batt |
| 0543 | 04 | Filtered Engine Oil Pressure short to ground |
| 0543 | 13 | Filtered Engine Oil Pressure cal required |
| 0544 | 08 | Engine Cooling Fan Speed signal abnormal |
| 0545 | 05 | Ether Start Relay open/short to +batt |
| 0545 | 06 | Ether Start Relay short to ground |
| 0546 | 05 | Ether Hold Relay open/short to ground |
| 0546 | 06 | Ether Hold Relay short to +batt |
| 0799 | 12 | Need Service tool update |
| 0800 | 09 | Unable to communicate with VIMS |
| 0827 | 08 | Left Exhaust Temperature signal abnormal |
| 0828 | 08 | Right Exhaust Temperature signal abnormal |
| 0829 | 03 | Rear Aftercool Temperature open/short to +batt |
| 0829 | 04 | Rear Aftercool Temperature short to ground |
| ( 1 ) | The Component Identifier is a code which is assigned to each component. |
| ( 2 ) | The Failure Mode Identifier is a failure of a component. |
Module Identifier (MID)
The module identifier (MID) indicates the electronic module that generated the diagnostic code.
- The module identifier (36) indicates the engine ECM.