Test O: Water In Fuel (WIF) Sensor
PINPOINT TEST O: WATER IN FUEL (WIF) SENSORFlow Chart:
This pinpoint test is intended to diagnose the following:
- fuel system contamination
- circuitry
- WIF sensor
Water In Fuel (WIF) Sensor Connector
Water In Fuel (WIF) Sensor Connector:
PCM Connector
PCM Connector:
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O1 : PRELIMINARY DIAGNOSIS FOR DIAGNOSTIC TROUBLE CODE (DTC) P2269
- Carry out a visual inspection.
- Retrieve and record all DTCs
- Clear the DTCs.
- Carry out the KOEO and KOER self-test. Quick Test Description
- Ignition ON, engine running.
- Monitor the Water In Fuel indicator for 5 minutes.
- Is DTC P2269 present or is the water in fuel indicator illuminated?
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O2 : CHECK FOR WATER OR CONTAMINANTS IN THE FUEL
NOTE:
- If the PCM detects water for greater than 4 minutes, continuous DTC P2269 is set and the PCM sends a message to the instrument cluster (IC) to illuminate the WATER IN FUEL indicator
- The fuel sample should fill the 0.95 L (1 quart) clear container half full. Flow out of the fuel drain should be a steady stream. Insufficient flow may indicate a fuel drain restriction or contaminants blocking the fuel drain. Repair as necessary.
- Inspect the fuel sample in the clear container. The fuel sample should be clear, not cloudy. Some water and contaminants may be present in the fuel sample if the fuel filter has not been replaced recently. If water in the fuel is present, the water will separate from the fuel and condense in the bottom of the clear container. Contaminants may appear in the form of sludge, dirt or metallic corrosion particles in the fuel sample. If the fuel sample is cloudy, the fuel is aerated or emulsified with water. If the fuel sample is aerated, refer to Performance Diagnostic Procedures and carry out the Fuel Aeration Test. If the fuel sample is emulsified, replace the fuel filters. Component Tests and General Diagnostics 10c. Fuel Aeration Test
- Remove the fuel conditioning module drain plug and fill the clear container until it is half full.
- Install the drain plug.
- Inspect the fuel sample for water or contaminants.
- Is water or contaminants present in the fuel sample in the clear container?
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O3 : CHECK 2 ADDITIONAL FUEL SAMPLES FOR WATER IN THE FUEL
NOTE: Checking 2 additional fuel samples for water will determine if the fuel system has water contamination in the fuel tank.
- Start the engine.
- Ignition OFF.
- Remove the fuel conditioning module drain plug and fill the clear container until it is half full.
- Install the drain plug.
- Start the engine.
- Ignition OFF.
- Remove the fuel conditioning module drain plug and fill the clear container until it is half full.
- Install the drain plug.
- Inspect the fuel sample for water.
- Is water present in the final fuel sample in the clear container?
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O4 : CHECK THE WIF SENSOR
- WIF Sensor connector disconnected.
- Measure the resistance between:
- Is the resistance greater than 10 kOhm?
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O5 : CHECK FOR A SHORT TO GROUND IN THE SIGNAL CIRCUIT
- PCM connector disconnected.
- Measure the resistance between:
- Is the resistance greater than 10 kOhm?
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O6 : CHECK THE WIF SENSOR FOR CONTAMINATION
NOTE: Any contamination or metallic particles on the WIF sensor pins may cause a short between the pins.
- Remove the fuel conditioning module manifold.
- Check the WIF sensor pins and the fuel conditioning module manifold and reservoir for contamination.
- Clean the WIF sensor pins and the fuel conditioning module manifold and reservoir as necessary.
- Measure the resistance between:
- Is the resistance greater than 10 kOhm?
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O7 : CHECK THE WATER IN FUEL INDICATOR FOR CORRECT OPERATION
NOTE: To check the correct operation of the Water In Fuel indicator, a period of time greater than 4 minutes is required for the PCM to complete the diagnostic routine.
- PCM connector connected.
- WIF Sensor connector connected.
- Clear the DTCs.
- Ignition OFF.
- Ignition ON, engine running.
- Monitor the Water In Fuel indicator for 5 minutes.
- Does the Water In Fuel indicator illuminate briefly at ignition ON and then remain off?
