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Home >> Pontiac >> 2009 >> Vibe Base, 2.4 0, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 69 (Engine Control System & Fuel System - 4.6L - DTC P0016 To DTC P0336) >> DTC P0324, P0325, P0326, P0327, P0328, P0330, P0331, P0332, or P0333 >> Circuit/System Testing >> P0325, P0327, P0328, P0330, P0332, and P0333

P0325, P0327, P0328, P0330, P0332, and P0333

WARNING: This page is about a different car, the 2009 Cadillac DTS. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition ON, engine OFF
  2. Disconnect C 138 at the back of the engine.
  3. Measure for 2-3 volts between each of the following circuits and ground on the ECM side of the harness connector.
    • Knock sensor bank 1 signal circuit terminal G
    • Knock sensor bank 1 signal circuit terminal H
    • Knock sensor bank 2 signal circuit terminal J
    • Knock sensor bank 2 signal circuit terminal K
    • 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. Test the KS circuits on the KS side of the connector for the following:
    • Open/high resistance
    • Short to ground
    • Short to any other circuit
  5. If all circuits test normal, replace the appropriate KS.
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