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Home >> Chevrolet >> 2011 >> Volt >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls And Fuel - 1.4L (LUU) - DTC P1400 Through DTC P2635 >> DTC P1682 >> Circuit/System Testing

Circuit/System Testing

  1. Ignition OFF, disconnect the K20 Engine Control Module connector X1 and the K20 Engine Control Module connector X2.
  2. Ignition ON, test for B+ between the K20 Engine Control Module harness connector terminals listed below and ground.
    • Terminal X1 19
    • Terminal X2 13
    • Terminal X2 28
    • If less than the specified value, repair the appropriate ignition voltage circuits for a short to ground or an open/high resistance.
  3. If all circuits test normal, replace the K20 Engine Control Module.
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