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Home >> Chevrolet >> 2009 >> TrailBlazer 4.2 S, RWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System & Fuel System - 4.2L - DTC P0013 To P0365 >> DTC P0335 or P0336 >> Component Testing

Component Testing

IMPORTANT: You must perform the Circuit/System Testing before proceeding with Component Testing.
  1. Remove the CKP sensor and inspect the sensor and the O-ring for damage.
  2. Connect the connector to the CKP sensor.
  3. Ignition ON, engine OFF, observe the CKP Active Counter while passing a steel object by the tip of the sensor repeatedly. The CKP Active Counter should increment.
    • If the CKP Active Counter does not increment, replace the CKP sensor.