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Home >> Chevrolet >> 2010 >> Impala Police >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 5 (Engine Controls And Fuel - 3.5L - DTC P0010 - DTC P0340) >> DTC P0325-P0328, P0330, P0332, or P0333 >> Circuit/System Testing >> P0325, P0327, P0328, P0330, P0332, P0333

P0325, P0327, P0328, P0330, P0332, P0333

WARNING: This page is about a different variant/trim than selected.
  1. Ignition ON, engine OFF.
  2. Disconnect the knock sensor harness connector.
  3. Measure for 2-3 V between each of the following circuits and ground on the ECM side of the harness connector:
    • The knock sensor signal circuit, terminal A
    • The knock sensor signal circuit, terminal B
    • If less than the specified range, test the circuits for a short to ground or an open/high resistance. If the circuits test normal, replace the ECM.
    • If greater than the specified range, test the circuits for a short to voltage. If the circuits test normal, replace the ECM.
  4. If the circuits test normal, replace the knock sensor.
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