Troubleshooting

(Table 115, contd)
Troubleshooting Test Steps
Values Results
C. Use the electronic service tool to recheck the system for
active diagnostic codes.
Result: The diagnostic code is still present with the replace-
ment ECM.
Contact the DSN.
i06233870
Water in Fuel - Test
For a 97-15 diagnostic code, refer to
Troubleshooting,
“Fuel Contains Water” before
returning to this procedure.
Water-in-Fuel Sensor Operation
The Water In Fuel (WIF) sensor is a normally open
sensor. During normal operation, there will be no
signal sent from the WIF sensor to the ECM. If water
is detected in the fuel, the sensor will send a signal to
the ECM. If the signal remains constant for 60
seconds, a 97-15 diagnostic code will become active.
This diagnostic code can also be caused by a short in
the WIF sensor circuit.
Illustration 80 g03636920
Schematic diagram for the WIF sensor circuit
Not all connectors are shown. Refer to the Electrical Schematic for the application.
UENR0612-07 251
Circuit Tests
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