68891T Mercruiser DRIVER

Table 1
Cross-Reference from CID-FMI Code on Cat Data Link to Troubleshooting Procedure    
Code and Description    Procedure    
1-5 Cylinder #1 Injector current below normal     Troubleshooting, "Injector Solenoid - Test"    
1-6 Cylinder #1 Injector current above normal     Troubleshooting, "Injector Solenoid - Test"    
2-5 Cylinder #2 Injector current below normal     Troubleshooting, "Injector Solenoid - Test"    
2-6 Cylinder #2 Injector current above normal     Troubleshooting, "Injector Solenoid - Test"    
3-5 Cylinder #3 Injector current below normal     Troubleshooting, "Injector Solenoid - Test"    
3-6 Cylinder #3 Injector current above normal     Troubleshooting, "Injector Solenoid - Test"    
4-5 Cylinder #4 Injector current below normal     Troubleshooting, "Injector Solenoid - Test"    
4-6 Cylinder #4 Injector current above normal     Troubleshooting, "Injector Solenoid - Test"    
5-5 Cylinder #5 Injector current below normal     Troubleshooting, "Injector Solenoid - Test"    
5-6 Cylinder #5 Injector current above normal     Troubleshooting, "Injector Solenoid - Test"    
6-5 Cylinder #6 Injector current below normal     Troubleshooting, "Injector Solenoid - Test"    
6-6 Cylinder #6 Injector current above normal     Troubleshooting, "Injector Solenoid - Test"    
91-8 Throttle Position Sensor abnormal frequency, pulse width, or period     Troubleshooting, "Speed Control (Switch) - Test"
or
Troubleshooting, "Speed Control (Remote Throttle) - Test"    
100-3 Engine Oil Pressure Sensor voltage above normal     Troubleshooting, "Sensor Signal (Analog, Active) - Test"    
100-4 Engine Oil Pressure Sensor voltage below normal     Troubleshooting, "Sensor Signal (Analog, Active) - Test"    
100-13 Engine Oil Pressure Sensor calibration required     Troubleshooting, "Pressure Sensor - Calibrate"    
110-3 Engine Coolant Temperature Sensor voltage above normal     Troubleshooting, "Sensor Signal (Analog, Active) - Test"    
110-4 Engine Coolant Temperature Sensor voltage below normal     Troubleshooting, "Sensor Signal (Analog, Active) - Test"    
168-0 Electrical System Voltage high - most severe (3)     Troubleshooting, "Electrical Power Supply - Test"    
168-1 Electrical System Voltage low - most severe (3)     Troubleshooting, "Electrical Power Supply - Test"    
168-2 Electrical System Voltage erratic, intermittent, or incorrect     Troubleshooting, "Electrical Power Supply - Test"    
172-3 Intake Manifold Air Temperature Sensor voltage above normal     Troubleshooting, "Sensor Signal (Analog, Active) - Test"    
172-4 Intake Manifold Air Temperature Sensor voltage below normal     Troubleshooting, "Sensor Signal (Analog, Active) - Test"    
174-3 Fuel Temperature Sensor voltage above normal     Troubleshooting, "Sensor Signal (Analog, Active) - Test"    
174-4 Fuel Temperature Sensor voltage below normal     Troubleshooting, "Sensor Signal (Analog, Active) - Test"    
190-2 Engine Speed Sensor erratic, intermittent, or incorrect     Troubleshooting, "Speed/Timing - Test"    
190-3 Engine Speed Sensor voltage above normal     Troubleshooting, "Speed/Timing - Test"    
190-8 Engine Speed Sensor abnormal frequency, pulse width, or period     Troubleshooting, "Speed/Timing - Test"    
253-2 Personality Module erratic, intermittent, or incorrect     Troubleshooting, "ECM Software - Install"    
261-13 Engine Timing Calibration calibration required     Troubleshooting, "Timing - Calibrate"    
262-3 5 Volt Sensor DC Power Supply voltage above normal     Troubleshooting, "Sensor Supply - Test"    
262-4 5 Volt Sensor DC Power Supply voltage below normal     Troubleshooting, "Sensor Supply - Test"    
267-2 Remote Shutdown Input erratic, intermittent, or incorrect     Troubleshooting, "Shutdown - Test"    
268-2 Programmed Parameter Fault erratic, intermittent, or incorrect     Troubleshooting, "Configuration Parameters"    
273-0 Turbocharger Outlet Pressure Sensor high - most severe (3)     Troubleshooting, "Sensor Signal (Analog, Active) - Test"    
273-3 Turbocharger Outlet Pressure Sensor voltage above normal     Troubleshooting, "Sensor Signal (Analog, Active) - Test"    
273-4 Turbocharger Outlet Pressure Sensor voltage below normal     Troubleshooting, "Sensor Signal (Analog, Active) - Test"    
273-13 Turbocharger Outlet Pressure Sensor calibration required     Troubleshooting, "Pressure Sensor - Calibrate"    
274-3 Atmospheric Pressure Sensor voltage above normal     Troubleshooting, "Sensor Signal (Analog, Active) - Test"    
274-4 Atmospheric Pressure Sensor voltage below normal     Troubleshooting, "Sensor Signal (Analog, Active) - Test"    
274-13 Atmospheric Pressure Sensor calibration required     Troubleshooting, "Pressure Sensor - Calibrate"    
275-3 Right Turbocharger Inlet Pressure Sensor voltage above normal     Troubleshooting, "Sensor Signal (Analog, Active) - Test"    
275-4 Right Turbocharger Inlet Pressure Sensor voltage below normal     Troubleshooting, "Sensor Signal (Analog, Active) - Test"    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.Refer to Table 1 for a complete list of the diagnostic codes and the appropriate troubleshooting procedure.Note: Do not confuse diagnostic codes with event codes. Event codes alert the operator that an abnormal operating condition such as low oil pressure or high coolant temperature has been detected.
Illustration 1 g01138880
Example of the typical operating range of a temperature sensor (1) This area represents the normal operating range of the parameter. The normal output voltage of the sensor is between 0.2 VDC and 4.2 VDC. (2) In this area, the temperature above 107 °C (225 °F) is higher than normal. The output voltage of the sensor will generate an event code. The sensor does not have an electronic problem. (3) In these areas, the output voltage of the sensor is too high or too low. The voltage is outside of the normal range. The electronic problem will generate a diagnostic code. Refer to Troubleshooting, "Diagnostic Trouble Code List" for additional information on diagnostic codes.Note: This graphic is an example. The signal ranges in this graphic are used only as examples.Active Diagnostic Codes
An active diagnostic code represents a problem with the electronic