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Home >> Pontiac >> 2009 >> Vibe Base, 2.4 0, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 9 (Engine Control System & Fuel System - 1.8L (Lay) - DTC P0010 To DTC P0420) >> DTC P0325, P0326, P0327, or P0328 >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different variant/trim than selected.
    IMPORTANT: If the KS lead is damaged in any way, replace the KS.
  1. Ignition OFF, disconnect the harness connector at the KS.
  2. Ignition OFF, test for less than 10 ohms between the low reference circuit terminal 1 and ground G104.
    • If greater than the specified range, test the low reference circuit for an open/high resistance, or for a short to voltage. If the circuit tests normal, replace the PCM.
  3. Ignition ON, test for 5 volts between the KS signal high circuit terminal 2 and ground.
    • If less than the specified range, test the signal high circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the PCM.
    • If greater than the specified range, test the signal high circuit for a short to voltage. If the circuit tests normal, replace the PCM.
  4. If all circuits test normal, test or replace the KS sensor.
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