Genuine Mazda 6 Crankshaft Position Sensor

Mazda 6 Crankshaft Position Sensor Parts and Q&A

• Crankshaft Position Sensor
  CAY1-18-221
  Q: What actions should you take if replacing the Crankshaft Position Sensor triggers a Diagnostic Trouble Code (DTC) on Mazda 6?

  A:

  Some models may program a Diagnostic Trouble Code (DTC) on changing the CKP sensor. In case it does, and you have a generic scan tool that is able to clear codes, erase the code and run a check to see whether it has vanished or is still present. In case it does, one should use a dealer service department to carry out a Misfire Monitor Neutral Profile Correction on the factory scan tool. Start with the disconnection of the cable to the negative battery terminal. On models other than 3.7L V6, loosen the front right lug nuts and then jack up the front of the car and secure it on jackstands. Take off the right front wheel and the access panel on the lower part of the fender beneath the bigger splash cover. In case of 3.7L V6, raise front of the car and place it safely at jackstands and remove engine under cover. The CKP sensor is fitted on the back of the timing chain cover at the lower rear part just behind the crankshaft pulley. Install the No.1 cylinder in Top Dead Center (TDC). Unscrew the CKP sensor mounting bolts, disconnect the electrical connector, to the CKP sensor and remove the sensor. When fitting a new CKP sensor, then it includes an alignment jig that is unique to the sensor but an aftermarket one may be sufficient. In case the CKP sensor had to be removed to get to another component, apply the other method of aligning the CKP sensor. Attach a 6 mm 18 mm bolt in the threaded hole that is in the crankshaft pulley and screw into the timing chain cover. Install CKP sensor and leave the sensor mounting bolts loose. In case of new installation of a CKP sensor, follow as follows: place it with the special alignment jig as per the instructions provided by the manufacturer, screw the CKP sensor bolts firmly and then take away the alignment jig. When replacing the old CKP sensor, note the sensor trigger wheel or timing plate attached on the back of the crankshaft pulley with the blank spot on that side of the timing plate. Then number five teeth in an anti-clockwise direction of this blanked area followed by a straight line, passing through the middle of the crankshaft pulley. Install CKP sensor: Line made, center of the CKP sensor is then mounted in position by tightening of sensor bolts. Unscrew the Crankshaft pulley bolt which was previously fixed, take off the special timing tool and fit in the cylinder block plug. Removal is otherwise the opposite of the installation. In V6 models that have a 3.0L engine, unscrew the CKP sensor mounting bolt, and detach the electrical connector of the CKP sensor. Check sensor O-ring and change it in case it is cut, torn, or worn. Wipe sensor O-ring with clean engine oil. On the engine block, the CKP sensor is positioned on the left front side of the engine block just next to the transaxle; in the case of the 3.7L engine. Take out the upstream and downstream Oxygen Sensor of the catalyst converter of the front head, then take out the catalyst of the front head. Take out the mounting nut and the heat shield of CKP sensor. Take off the rubber grommet cover, fully loosen the CKP sensor mounting bolt, and take off the sensor and bolt as one, bearing in mind that the sensor mounting bolt and sensor are a single piece. Unplug electrical connector of CKP sensor on sensor, and plug electrical connector of CKP sensor on sensor, and fit sensor. Removal is otherwise the opposite of the installation.