LINK 8D2134 - Caterpillar

Table 1
J1939 Code and Description CDL Code and Description Comment
1076-7
Engine Fuel Injection Pump Fuel Control Valve : Not Responding Properly 18-7
Fuel Control Valve : Not Responding Properly The commanded FCV position does not match the actual FCV position.
1076-8
Engine Fuel Injection Pump Fuel Control Valve : Abnormal Frequency, Pulse Width, or Period 18-8
Fuel Control Valve : Abnormal Frequency, Pulse Width, or Period The PWM signal between the FCV and the ECM has been lost.
1076-11
Engine Fuel Injection Pump Fuel Control Valve : Other Failure Mode 18-11
Fuel Control Valve : Other Failure Mode A failed FCV has been detected.
1076-12
Engine Fuel Injection Pump Fuel Control Valve : Failure 18-12
Fuel Control Valve : Failure A failed FCV has been detected.
3597-6
ECU Power Output Supply Voltage #1 : Current Above Normal 1028-6
Power Supply Control 1 : Current Above Normal A failed power supply to the FCV has been detected.
Table 2
Troubleshooting Test Steps Values Results
1. Check for Codes
A. Apply electrical power to the engine.
B. Connect Cat® Electronic Technician (ET) to the service tool connector.
C. Determine if a code is active or logged.
Codes
Result: An 18–7, 18–11, 18–12, 1076–7, 1076–11 or 1076-12 code is present.
Repair: A failed FCV has been detected.
Note: If the pressure is not less than 5000 kPa (725 psi) (gauge) after 10 minutes, vent the pressure from the fuel system. Refer to Systems Operation/Testing and Adjusting, Fuel Rail Pressure - Release, for information.
Replace the FCV.
Proceed to Test Step 9.
Result: An 18–8 or 1076-8 code is present.
Proceed to Test Step 2.
Result: A 1028–6 or 3597-6 code is active.
Proceed to Test Step 5.
2. Check the