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Home >> Chevrolet >> 2012 >> Volt >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Controls/Fuel - 1.4L (LUU) - DTC P0451 To DTC P2635 And Diagnostic Information And Procedures >> Diagnostic Information and Procedures >> DTC P2534 (Fuel Pump Control Module) >> Circuit/System Testing

Circuit/System Testing

  1. Verify that DTC P0562 is not set.
  2. Vehicle OFF, disconnect the harness connector of the K27 fuel pump control module.
  3. Vehicle in Service Mode, 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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