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Home >> Pontiac >> 2010 >> Vibe Base, 1.8 8, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System & Fuel System - 1.8L (Lay) - DTC P0010 To DTC P0420/P043F >> DTC P0335 or P0339 >> Circuit/System Testing

Circuit/System Testing

    NOTE: If the CKP sensor lead is damaged in any way, replace the CKP sensor.
  1. Ignition OFF, disconnect the harness connector at the CKP sensor.
  2. Ignition OFF, test for less than 10 Ω between the low reference circuit terminal 2 and ground G104.
    • If greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the PCM.
  3. Engine cranking, test for 1.4-1.6 V AC between the signal circuit terminal 1 and the low reference circuit terminal 2.
    • If less than the specified range, test the applicable 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 applicable circuit for a short to voltage. If the circuit tests normal, replace the PCM.
  4. If all circuits test normal, test or replace the CKP sensor.
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