OEM 2005 Chevrolet Cobalt Crankshaft Position Sensor

2005 Chevrolet Cobalt Parts Questions & Experts Answers

• Q: How is the Crankshaft Position Sensor System Variation Learn Performed After Engine Repairs on 2005 Chevrolet Cobalt?

  A: The Crankshaft position (CKP) system variation learn procedure is required after performing engine replacement, ecm replacement, Crankshaft damper replacement, Crankshaft replacement, ckp sensor replacement, or any engine repairs that interfere with the relationship of the Crankshaft to the ckp sensor whether dtc p0315 is set or not. Antennas for infrared and lf residual gas trapping investigation have to be installed to monitor component signals such as ckp sensor, cmp signal and ect. If the coolant temperature is not warm enough, idle the engine until it became right. Start with monitoring the Engine Control Module (ECM) for dtcs; if any dtcs that do not include p0315 are detected, refer to the corresponding dtc list. Choose the ckp system variation learn procedure in the special functions menu on the scan tool, and use the following steps: observe the fuel cut-off for the applicable engine, block the drive wheels, set the parking brake and place the transmission in park or neutral, turn the air conditioning (A/c) off, cycle the ignition from off to on, apply and hold onto the Brake Pedal, and start and idle the engine, and accelerate to wide open throat (WOT) without reaching the calibrated fuel cut-off rpm value. Dump the throttle instantly if the value exceeds, as well as when fuel cut off happens. In the learn process, open the throttle the instant that the engine starts to decelerate, getting the engine control back to the operator. The scan tool will show learn status: learned this ignition; learned this ignition, if the dtc p0315 ran and passed then procedure is complete. In the case of a failure or if it did not run check out dtc p0315. After successful completion, make sure to turn off the ignition for 30 seconds.