TUBE 1N4139 - Caterpillar

Table 1
J1939 Code and Description CDL Code and Description Comments
N/A 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.
N/A 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 the fuel system. Differentiating the water from the fuel would then be difficult.Troubleshooting Procedure
Table 2
Troubleshooting Test Steps Values Results
1. Remove the Water from the Separator Bowl
A. Turn the keyswitch to OFF.
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 keyswitch to 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 did not disappear.
Proceed to Test Step 2.
Result: The "Water in Fuel" warning disappeared.
Allow the engine to run for 5 minutes.
Repair: 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.
2. Check the Water Separator Switch for Correct Installation
A. Check the engine to determine if a water separator switch is installed.
Sensor Installed
Result: There is a water separator switch installed.
Proceed to Test Step 3.
Result: There is no water separator switch installed.
Repair: Turn the keyswitch to the ON position. Connect Cat ET and select "Configuration". Select "Engine Configuration Parameters" then disable the water separator switch. Return to the unit service.
3. Check the Water Separator Switch and Harness
A. Turn the keyswitch to OFF.
B. Disconnect the harness.
C. Create a short in the harness.
D. Turn the keyswitch to ON.
Open or Short Circuit
Result: The "Water Separator Has Water" warning disappears.
Repair: Replace the water separator switch. Return the unit to service.
Result: The "Water Separator Has Water" warning did not disappear.
Repair: Repair the wiring or replace the wiring.
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).