WASHER 6S3283 - Caterpillar

Table 1
Code and Description Conditions which Generate this code System Response
94-17
Engine Fuel Delivery Pressure : Low - least severe The Engine Control Module (ECM) activates this code when the fuel pressure has been below the minimum value for a programmed time period. The code is logged. Probable Causes
Fuel level
Fuel tank
Fuel filters
Fuel pressure sensor
Fuel pressure regulator
Fuel priming pumpRecommended Actions
Table 2
Troubleshooting Test Steps Values Results
1. Check for Codes
A. Connect Cat® Electronic Technician (ET) to the service tool connector. Refer to Troubleshooting, "Electronic Service Tools", if necessary.
B. Download the "Product Status Report" from the engine ECM before performing any troubleshooting or clearing diagnostic trouble codes.
C. Determine if the diagnostic trouble code that directed to this procedure is present.
D. Look for active diagnostic codes that are associated with the system for the event code that directed to this procedure.
Codes
Result: An associated code is present.
Repair: Troubleshoot any associated codes before continuing with this test.
Result: A 94-17 is present.
Proceed to Test Step 2.
Result: No active codes
STOP
2. Check the Fuel Level in the Tank
A. Visually inspect the fuel level in the fuel tank. Ensure that the fuel tank contains enough fuel in order to operate the engine.
B. Ensure that the fuel supply valve (if equipped) is in the full OPEN position.
Fuel level
Result: The fuel level is OK.
Proceed to Test Step 3.
Result: The fuel level is not OK.
Fill the tank. Verify that the problem has been resolved.
If the problem is not resolved, proceed to Test Step 3.
3. Inspect the Fuel Tank Vent Port for Debris
Fuel tank vent
Result: The fuel tank vent is OK.
Proceed to Test Step 4.
Result: The fuel tank vent is NOT OK.
Repair: Clear any restrictions with compressed air.
Do not allow debris to enter the fuel tank while you clean the cap. Damage to the fuel system will occur.
If the problem is not resolved, proceed to Test Step 4.
4. Replace the Primary Fuel Filter
Fuel filter
Result: After starting the engine, the code is no longer active.
STOP
Result: The code is still active after replacing the primary fuel filter.
Proceed to Test Step 5.
5. Verify the Fuel System Is Primed
A. Drain the water from the primary filters. Refer to Operation and Maintenance Manual, "Fuel System Primary Filter (Water Separator) - Drain".
B. Verify that the fuel system is properly primed. Refer to Operation and Maintenance Manual, "Fuel System - Prime".
C. Start the engine and allow it to operate for 1 minute.
D. Check for codes.
Fuel system
Result: A 94-17 is present.
Proceed to Test Step 6.
Result: A code other than 94-17 is present.
Refer to the appropriate troubleshooting story.
6. Check the Fuel Pressure Sensor
A. Start the engine. Run the engine at low idle. Use Cat ET to monitor the value for the following parameter:
"Fuel Pressure (absolute)"
B. Check the value of the Fuel Pressure (absolute) parameter while the engine is at low idle. Ensure that the value is reasonable. Refer to Technical Marketing Information (TMI) for specific data.
C. Increase the engine speed from low engine idle to high engine idle while you monitor the parameters. Ensure that the value fluctuates with the change in