PIPE ASSEM. 2P1456 - Caterpillar

Use this procedure to troubleshoot an overcrank occurrence. Also, use this procedure if the following event code is active or logged.
Table 1
J1939 Code and Description CDL Code and Description Comments
1664-31
Engine Automatic Start Failed E225 (3)
Engine Overcrank The fuel is shut off. Engine cranking is prevented.
The code is logged. Probable Causes
Codes
Starting aids (if applicable)
Driven equipment
Fuel system
Batteries
Charging circuit
Starter
ParametersRecommended Actions
Table 2
Troubleshooting Test Steps Values Results
1. Check for Codes
A. Connect Cat® Electronic Technician (ET) to the service tool connector.
B. Look for active codes that are associated with the system for the event code.
Codes
Result: An associated code is active.
Repair: Troubleshoot any associated codes before continuing with this test.
Result: A code is active or logged.
Proceed to Test Step 2.
2. Check the Starting Aids
A. If cold ambient conditions exist, check operation of starting aids. Verify that the starting aid is operating correctly. Refer to the appropriate circuit test for information that is related to troubleshooting the starting aid.
Note: If ether bottles are not installed, use Cat ET in to verify that ether is not enabled.
Starting Aid
Result: The starting aid is operating correctly.
Proceed to Test Step 3.
Result: The starting aid is not operating correctly.
Repair: Repair or replace damaged components.
If the problem is not resolved, proceed to Test Step 3.
3. Inspect the Driven Equipment
Driven Equipment
Result: The driven equipment is OK.
Proceed to Test Step 4.
Result: The driven equipment is NOT OK.
Repair: Repair or replace damaged driven equipment.
If the problem is not resolved, proceed to Test Step 4.
4. Inspect the Fuel System
Refer to Testing and Adjusting, "Fuel System Inspection" for additional information.
A. Visually check the fuel level in the fuel tank. Do not rely on the fuel gauge only.
B. Ensure that the vent in the fuel cap is not filled with debris.
C. Ensure that the fuel supply valve (if equipped) is in the full OPEN position.
Note: Cold weather adversely affects the characteristics of the fuel. Refer to the engines Operation and Maintenance Manual for information on improving the characteristics of the fuel during cold-weather operation.
D. Check fuel quality. Refer to Testing and Adjusting, "Fuel Quality - Test" for additional information. Check the fuel tank for debris or foreign objects which may block the fuel supply.
E. Check for fuel leaks.
F. Check the filtered fuel pressure while the engine is being cranked. Refer to Troubleshooting, "Fuel Pressure Is Low" for additional information.
Fuel System
Result: The fuel system is OK.
Proceed to Test Step 5.
Result: The fuel system is NOT OK.
Repair: Repair or replace damaged fuel system components.
If the problem is not resolved, proceed to Test Step 5.
5. Inspect the Batteries
A. Charge the batteries, if necessary. Refer to Special Instruction, SEHS7633, "Battery Test Procedure" for additional information.
B. Load-test the batteries. Refer to Special Instruction, SEHS9249, "Use of 4C-4911 Battery Load Tester for 6 V, 8 V, and 12 V Lead Acid Batteries" for additional information.
Batteries
Result: The batteries are OK.
Proceed to Test Step 6.
Result: The batteries are NOT OK.
Repair: Repair or replace the batteries.
If the problem is not resolved, proceed to Test Step 6.
6. Inspect the Charging Circuit
A. Inspect the battery cables, wiring, and