C15 and C18 Engines for Caterpillar Built Machines Caterpillar

Fuel System Water Separator Has Water

Usage:

D9T NJH

This procedure covers the following diagnostic codes:

Note: Some of the following codes may not be applicable for certain applications.

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Table 1
Diagnostic Codes Table
CDL Code	Code Description	Comments
E232 (1)	High Fuel/Water Separator Water Level	A high level of water is detected in the water separators. If equipped, the action lamp will illuminate.
E232 (2)	High Fuel/Water Separator Water Level	A high level of water is detected in the water separators. The level in the water separator has been high for at least an hour. The operator needs to empty the water separator. The engine will be derated. If equipped, the action lamp will illuminate.

Note: Visually identifying the presence of water in the bowl may be impossible. Water may turn dark yellow in color in the fuel system. Differentiating the water from the fuel would then be difficult.

Troubleshooting Procedure

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Table 2
Troubleshooting Test Steps	Values	Results
1. Remove the Water from the Separator Bowl A. Turn the ignition key to the OFF position. B. Drain the fuel/water separator bowl. Refer to the Operation and Maintenance Manual, "Fuel System Primary Filter (Water Separator) - Drain". C. If necessary, prime the fuel system. Refer to the Operation and Maintenance Manual, "Fuel System - Prime". D. Turn the ignition key to the ON position. Do not start the engine. E.Wait for 1 minute. The "Water in Fuel" warning should disappear.	Water	Result: The "Water in Fuel" warning disappeared. Allow the engine to run for 5 minutes. If the "Water in Fuel" warning reappears, the fuel supply is contaminated with water. Drain the fuel tank and then fill the fuel tank with clean fuel. Return the unit to service. Result: The "Water in Fuel" warning did not disappear. Proceed to Test Step 2.
2. Check the Water Separator Switch and Harness A. Turn the keyswitch to the OFF position. B. Disconnect the harness. C. Create a short in the harness. D. Turn the keyswitch to the ON position.	Open or Short Circuit	Result: The "Water Separator Has Water" warning disappears. Replace the water separator switch. Return the unit to service. Result: The "Water Separator Has Water" warning did not disappear. Repair the wiring or replace the wiring.

Complete the procedure in the order in which the steps are listed.

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).