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Home >> Buick >> 2007 >> Allure CX >> Repair and Diagnosis >> External Pages >> Different car >> Section 70 (Engine Control System & Fuel System - 3.8L - DTC P0385 To DTC P2108) >> DTC P0386 >> Component Test

Component Test

WARNING: This page is about a different car, the 2008 Buick LaCrosse and 2008 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.
  1. Inspect the CKP sensor for looseness and correct installation.
  2. Connect jumper wires from the CKP sensor connector 12-volt reference and the low reference to the CKP sensor; turn ON the ignition, with the engine OFF.
  3. Connect a DMM to the CKP Sensor signal at the CKP sensor and observe the Duty Cycle. Pass a steel object by the sensor repeatedly. The Duty Cycle should increment.
    • If the Duty Cycle does not increment, replace the CKP sensor.
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