STRIP 9M6743 - Caterpillar

The Electronic Control Module (ECM) detects an abnormal fuel filter differential pressure.Use this procedure to troubleshoot a problem with the fuel filters. Also, use this procedure if one of the following event codes are active or logged.
Table 1
J1939 Code and Description CDL Code and Description Comments
1382-0
Engine Fuel Filter (suction side) Differential Pressure : High - most severe (3) E1129 (3)
Fuel Filter (suction side) Restriction For the primary fuel filters, the difference between the filtered fuel pressure and the unfiltered fuel pressure is greater than the trip point.
1382-15
Engine Fuel Filter (suction side) Differential Pressure : High - least severe (1) E1129 (1)
Fuel Filter (suction side) Restriction For the primary fuel filters, the difference between the filtered fuel pressure and the unfiltered fuel pressure is greater than the trip point.
1382-16
Engine Fuel Filter (suction side) Differential Pressure : High - moderate severity (2) E1129 (2)
Fuel Filter (suction side) Restriction For the primary fuel filters, the difference between the filtered fuel pressure and the unfiltered fuel pressure is greater than the trip point.
5584-0
Engine Fuel Filter Degradation : High - most severe (3) E390 (3)
Fuel Filter Restriction For the secondary fuel filters, the difference between the filtered fuel pressure and the unfiltered fuel pressure is greater than the trip point pressure.
5584-15
Engine Fuel Filter Degradation : High - least severe (1) E390 (1)
Fuel Filter Restriction For the secondary fuel filters, the difference between the filtered fuel pressure and the unfiltered fuel pressure is greater than the trip point pressure.
5584-16
Engine Fuel Filter Degradation : High - moderate severity (2) E390 (2)
Fuel Filter Restriction For the secondary fuel filters, the difference between the filtered fuel pressure and the unfiltered fuel pressure is greater than the trip point pressure. Probable Causes
Codes
Fuel filterRecommended Action
Note: Do not fill the canister or the fuel filter before installation. The fuel can carry debris into the fuel filter and the fuel system may be damaged. The electric priming pump is designed to purge the trapped air in the new filters.
Table 2
Troubleshooting Test Steps Values Results
1. Check for Codes
A. Connect Cat® Electronic Technician (ET) to the service tool connector.
B. Determine if a code is active or logged.
Codes
Result: A code is active or logged.
Proceed to Test Step 2.
2. Change the Fuel Filters
A. Replace both the primary and secondary fuel filter elements.
B. Prime the fuel system. Refer to the Operation and Maintenance Manual for additional information.
C. Restart the engine and check for an active event code for the filter that was changed.
Fuel Filter
Result: A code is not active or logged.
Return to service.
If the procedure did not correct the issue, contact your Cat dealer Technical Communicator (TC). For further assistance, your TC can confer with the Dealer Solutions Network (DSN).