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Home >> Chevrolet >> 2018 >> Equinox L >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 17 (Engine Controls And Fuel - 1.6L (LH7) Diesel - Diagnostic Information And Procedures (P205B - P2BAA) And Symptoms) >> Diagnostic Information And Procedures >> DTC P2264: Water In Fuel Sensor Circuit >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different variant/trim than selected.
  1. Ignition Off, and all vehicle systems Off, disconnect the harness connector at the B116 Water in Fuel Sensor. It may take up to 2 min for all vehicle systems to power down.
  2. Test for less than 5 Ω between the ground circuit terminal 2 and ground.
    • If 5 Ω or greater 

      Repair the open or high resistance in the ground circuit.

    • Go to next step: If less than 5 Ω 
  3. Ignition On.
  4. Test for 4.8 - 5.2 V between the 5V reference circuit terminal 1 and ground.
    • Go to next step: If less than 4.8 V 
    1. Ignition Off.
    2. Disconnect the harness connector at the K111 Fuel Pump Driver Control Module.
    3. Test for infinite resistance between the 5V reference circuit and ground.
      • If less than infinite resistance, repair the short to ground on the circuit.
      • If infinite resistance
    4. Test for less than 2 Ω in the 5V reference circuit end to end.
      • If 2 Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2 Ω, replace the K111 Fuel Pump Driver Control Module.
    • Go to next step: If greater than 5.2 V 
    1. Ignition Off.
    2. Disconnect the harness connector at the K111 Fuel Pump Driver Control Module, Ignition On.
    3. Test for less than 1 V between the 5V reference and ground.
      • If 1 V or greater, repair the short to voltage on the circuit.
      • If less than 1 V, replace the K111 Fuel Pump Driver Control Module.
    • Go to next step: If between 4.8 - 5.2 V 
  5. Verify the scan tool parameter Water in Fuel displays No.
    • Go to next step: If parameter does not display No 
    1. Ignition Off.
    2. Disconnect the harness connector at the K111 Fuel Pump Driver Control Module.
    3. Test for infinite resistance between the signal circuit terminal 3 and ground.
      • If less than infinite resistance, repair the short to ground on the circuit.
      • If infinite resistance, replace the K111 Fuel Pump Driver Control Module.
    • Go to next step: If parameter displays No 
  6. Install a 3 A fused jumper wire between the signal circuit terminal 3 and low reference circuit terminal 2.
  7. Verify the scan tool parameter Water in Fuel displays Yes.
    • If the parameter does not display Yes 
    1. Ignition Off, remove jumper wire.
    2. Disconnect the harness connector at the K111 Fuel Pump Driver Control Module.
    3. Ignition On.
    4. Test for less than 1 V between the signal circuit terminal 3 and ground.
      • If 1 V or greater, repair the short to voltage on the circuit.
      • If less than 1 V
    5. Ignition Off.
    6. Test for less than 2 Ω in the signal circuit end to end.
      • If 2 Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2 Ω, replace the K111 Fuel Pump Driver Control Module.
    • Go to next step: If the parameter displays Yes 
  8. Replace the B116 Water in Fuel Sensor.
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