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Home >> Chevrolet >> 2011 >> Volt >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Controls And Fuel - 1.4L (LUU) - DTC P1400 Through DTC P2635 >> DTC P2534 (Fuel Pump Control Module) >> Circuit/System Testing

Circuit/System Testing

  1. Verify that DTC P0562 is not set.
  2. Ignition OFF, disconnect the harness connector of the K27 fuel pump control module.
  3. Ignition ON, verify that a test lamp illuminates between the ignition circuit terminal 21 and ground.
    • If the test lamp does not illuminate, test the ignition circuit for a short to ground or an open/high resistance.
  4. If all circuits test normal, replace the K27 fuel pump control module.
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