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Home >> Chevrolet >> 2013 >> Orlando LS, Automatic Trans >> Repair and Diagnosis >> Electrical >> Instrument Panel System Displays And Gauges >> Diagnostic Information and Procedures >> DTC P0461-P0464 >> Circuit/System Testing

Circuit/System Testing

  1. Ignition OFF and all vehicle systems OFF, disconnect the X1 harness connector at the A7 Fuel Pump and Level Sender Assembly. It may take up to 2 minutes for all vehicle systems to power down.
  2. Test for less than 10 Ω between the low reference circuit terminal 3 and ground.
    • If 10 Ω or greater 
    1. Ignition OFF, disconnect the harness connector at the K20 engine control module.
    2. Test for less than 2 Ω in the low 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 K20 engine control module.
    • If less than 10 Ω 
  3. Ignition ON.
  4. Verify the scan tool Remaining Fuel In Tank parameter is less than 5%.
    • If 5% or greater 
    1. Ignition OFF, disconnect the harness connector at the K20 engine control module.
    2. Test for infinite resistance between the signal circuit terminal 4 and ground.
      • If less than infinite resistance, repair the short to ground on the circuit.
      • If infinite resistance, replace the K20 engine control module.
    • If less than 5% 
  5. Install a 3 A fused jumper wire between the signal circuit terminal 4 and the low reference circuit terminal 3.
  6. Verify the scan tool Remaining Fuel In Tank is greater than 90%.
    • If 90% or less 
    1. Ignition OFF, disconnect the harness connector at the K20 engine control module, ignition ON.
    2. Test for less than 1 V between the signal circuit and ground.
      • If 1 V or greater, repair the short to voltage on the circuit.
      • If less than 1 V
    3. Ignition OFF
    4. 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 K20 engine control module.
    • If greater than 90% 
  7. Ignition OFF, disconnect the X2 harness connector at the A7 Fuel Pump and Level Sensor Assembly.
  8. Test for less than 2 Ω in the signal circuit and low reference circuit between A7 Fuel Pump and Level Sensor Assembly X1 and X2 connectors.
    • If 2 Ω or greater, replace the A7 Fuel Pump and Level Sensor Assembly.
    • If less than 2 Ω
  9. Test for infinite resistance between the following X1 terminals:
    • terminal 1
    • terminal 2
    • terminal 3
    • terminal 4
    • If less than infinite resistance, replace the A7 Fuel Pump and Level Sensor Assembly.
    • If infinite resistance
  10. Test or replace the B46 fuel level sensor.
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