Component Testing
WARNING: This page is about a different car, the 2010 GMC Sierra and 2010 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
You must perform the Circuit/System Testing before proceeding with Component Testing.
- Ignition OFF, disconnect the harness connector at the crankshaft position sensor. Inspect the crankshaft position sensor for correct installation. Remove the crankshaft position sensor from the engine and inspect the sensor O-ring for damage.
- If the sensor is loose, incorrectly installed, or damaged, replace the crankshaft position sensor.
- Connect the crankshaft position sensor harness connector to the crankshaft position sensor.
- Ignition ON, observe the scan tool Crankshaft Position Active counter parameter while repeatedly passing a flat steel object across the tip of the sensor. The CKP Active Counter parameter should increment.
- Pass a flat steel object across the tip of the sensor repeatedly. The Crankshaft Position Active counter parameter should increment with each pass of the steel object.
- If the parameter does not increment, replace the crankshaft position sensor.