ENGINE AR-CORE 1852241 - Caterpillar

Table 1
J1939 Code and Description CDL Code and Description Comments
97-3
Water In Fuel Indicator : Voltage Above Normal 3547-3
Water In Fuel System Switch : Voltage Above Normal An open circuit in the Water-In-Fuel sensor circuit has been detected.
Table 2
Troubleshooting Test Steps Values Results
1. Inspect the Water in Fuel Sensor
A. Turn the keyswitch to OFF.
B. Disconnect the sensor from the wiring harness connector.
C. Use a jumper wire in order to create a short between terminal 1 (SIGNAL) and terminal 2 (RETURN).
D. Turn the keyswitch to ON.
E. Establish communication between Cat® Electronic Technician (ET) and the applicable Electronic Control Module (ECM). Refer to Troubleshooting, "Electronic Service Tools", if necessary.
F. Look for an active 97-15 or E232 (1) code after 45 seconds.
Codes
Result: A 97-15 or E232 (1) code is active.
A failed sensor has been detected.
Repair: Replace the sensor, return the unit to service.
Result: A 97-15 or E232 (1) code is not active.
Remove the jumper wire.
Proceed to Test Step 2.
2. Measure the Voltage at the Sensor Connector
A. Turn the keyswitch to OFF.
B. Disconnect the sensor connector.
C. Turn the keyswitch to ON.
D. Measure the voltage between pin 2 (RETURN) and pin 3 (SUPPLY) on the wiring harness connector for the WIF sensor.
E. Turn the keyswitch to OFF.
Voltage
Result: The measured voltage is 8VDC/ 1VDC.
There is an open in the signal wire. Refer to the machine-specific schematic in order to troubleshoot the signal wire.
Repair: Repair or replace the wiring harness as necessary.
Return the unit to service.
Result: The measured voltage is not 8VDC/ 1VDC.
Proceed to Test Step 3.
3. Measure the Battery Supply Voltage at the Sensor Connector
A. Turn the keyswitch to ON.
B. Measure the voltage between pin 3 (SUPPLY) and a known good ground source on the wiring harness connector for the WIF sensor.
C. Turn the keyswitch to OFF.
Voltage
Result: The measured voltage is 8VDC/ 1VDC.
There is an open in the return wire. Refer to the machine-specific schematic in order to troubleshoot the return wire.
Repair: Repair or replace the wiring harness as necessary.
Return the unit to service.
Result: The measured voltage is not 8VDC/ 1VDC.
There is an open in the supply wire. Refer to the machine-specific schematic in order to troubleshoot the supply wire.
Repair: Repair or replace the wiring harness as necessary.
Return the unit to service.
If this procedure did not correct the issue, contact your Cat dealer Technical Communicator (TC). For further assistance, your TC can confer with the Dealer Solution Network (DSN).