853415 Mercruiser WIRE, Mercathode To Engine

Table 1
Diagnostic Codes Table    
Description    Conditions which Generate this Code    System Response    
1-5 Cylinder #1 Injector current below normal     The Electronic Control Module (ECM) detects current below normal.     The code is logged.
If equipped, the warning light will illuminate.
The ECM will continue to attempt to operate the injector after the code has been logged.
The engine may misfire.
The engine may experience low power.    
1-6 Cylinder #1 Injector current above normal     The ECM detects current above normal for each of five consecutive attempts to operate the injector solenoid.
Battery voltage is above 9 volts for 2 seconds.     The code is logged.
If equipped, the warning light will illuminate.
The ECM will continue to attempt to operate the injector after the code has been logged.
The engine may misfire.
The engine may experience low power.    
2-5 Cylinder #2 Injector current below normal     The ECM detects current below normal.     The code is logged.
If equipped, the warning light will illuminate.
The ECM will continue to attempt to operate the injector after the code has been logged.
The engine may misfire.
The engine may experience low power.    
2-6 Cylinder #2 Injector current above normal     The ECM detects current above normal for each of five consecutive attempts to operate the injector solenoid.
Battery voltage is above 9 volts for 2 seconds.     The code is logged.
If equipped, the warning light will illuminate.
The ECM will continue to attempt to operate the injector after the code has been logged.
The engine may misfire.
The engine may experience low power.    
3-5 Cylinder #3 Injector current below normal     The ECM detects current below normal.     The code is logged.
If equipped, the warning light will illuminate.
The ECM will continue to attempt to operate the injector after the code has been logged.
The engine may misfire.
The engine may experience low power.    
3-6 Cylinder #3 Injector current above normal     The ECM detects current above normal for each of five consecutive attempts to operate the injector solenoid.
Battery voltage is above 9 volts for 2 seconds.     The code is logged.
If equipped, the warning light will illuminate.
The ECM will continue to attempt to operate the injector after the code has been logged.
The engine may misfire.
The engine may experience low power.    
4-5 Cylinder #4 Injector current below normal     The ECM detects current below normal.     The code is logged.
If equipped, the warning light will illuminate.
The ECM will continue to attempt to operate the injector after the code has been logged.
The engine may misfire.
The engine may experience low power.    
4-6 Cylinder #4 Injector current above normal     The ECM detects current above normal for each of five consecutive attempts to operate the injector solenoid.
Battery voltage is above 9 volts for 2 seconds.     The code is logged.
If equipped, the warning light will illuminate.
The ECM will continue to attempt to operate the injector after the code has been logged.
The engine may misfire.
The engine may experience low power.    
5-5 Cylinder #5 Injector current below normal
C6.6 only     The ECM detects current below normal.     The code is logged.
If equipped, the warning light will illuminate.
The ECM will continue to attempt to operate the injector after the code has been logged.
The engine may misfire.
The engine may experience low power.    
5-6 Cylinder #5 Injector current above normal
C6.6 only     The ECM detects current above normal for each of five consecutive attempts to operate the injector solenoid.
Battery voltage is above 9 volts for 2 seconds.     The code is logged.
If equipped, the warning light will illuminate.
The ECM will continue to attempt to operate the injector after the code has been logged.
The engine may misfire.
The engine may experience low power.    
6-5 Cylinder #6 Injector current below normal
C6.6 only     The ECM detects current below normal.     The code is logged.
If equipped, the warning light will illuminate.
The ECM will continue to attempt to operate the injector after the code has been logged.
The engine may misfire.
The engine may experience low power.    
6-6 Cylinder #6 Injector current above normal
C6.6 only     The ECM detects current above normal for each of five consecutive attempts to operate the injector solenoid.
Battery voltage is above 9 volts for 2 seconds.     The code is logged.
If equipped, the warning light will illuminate.
The ECM will continue to attempt to operate the injector after the code has been logged.
The engine may misfire.
The engine may experience low power.    Perform this procedure under conditions that are identical to the conditions that exist when the fault occurs. Typically, faults with the injector solenoid occur when the engine is warmed up and/or when the engine is under vibration (heavy loads).These engines have Electronic Unit Injectors (EUI) that are mechanically actuated and electronically controlled. The ECM sends a pulse to each injector solenoid. The pulse is sent at the correct time and at the correct duration for a given engine load and speed. The solenoid is mounted on top of the fuel injector body.If an open circuit is detected in the solenoid circuit, a diagnostic code is generated. The ECM continues to try to fire the injector. If a short circuit is detected, a diagnostic code is generated. The ECM will disable the solenoid circuit. The ECM will periodically try to fire the injector. If the short circuit remains this sequence of events will be repeated until the fault is corrected. When an injector is replaced, program the new injector code into the ECM. If the ECM is replaced, all of the injector codes must be programmed into the new ECM. Refer to Troubleshooting, "Injector Trim File - Install".The Caterpillar Electronic Technician (ET) includes the following tests that aid in troubleshooting the injector solenoids:"Cylinder Cutout Test"All active diagnostic codes must be repaired before running the "Cylinder Cutout Test". Use the "Cylinder Cutout Test" to diagnose a malfunctioning injector while the engine is running. When a good injector is cut out, the "Fuel Position" should change. The change in the fuel position is caused by the other injectors that are compensating for the cut out injector.