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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 252 (Engine Control System & Fuel - 4.8L, 5.3L, 6.0L, Or 6.2L - DTC P0230 To DTC P0690) >> DTC P0324, P0325, P0326, P0327, P0328, P0330, P0332, or P0333 >> Circuit/System Testing >> P0325, P0327, P0328, P0330, P0332, P0333

P0325, P0327, P0328, P0330, P0332, P0333

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2008 GMC Yukon XL, 2008 GMC Yukon, 2008 Chevrolet Tahoe, 2008 Chevrolet Suburban, and 2008 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition ON, engine OFF.
  2. Disconnect the appropriate KS harness connector.
  3. Measure for 2-3 volts between each of the following circuits and ground on the ECM side of the harness connector:
    • The KS signal circuit, terminal A
    • The KS 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 all circuits test normal, replace the KS.
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