Crankshaft Position Sensor (CKP)

The direct ignition system works with a magnetic crankshaft position sensor. This sensor protrudes from its mounting socket by about 1.3 mm relative to the crankshaft phonic wheel. A specially designed phonic wheel is attached to the crankshaft or crankshaft pulley and has 58 grooves around the circumference, 57 of which are evenly spaced at 6 degrees. The last groove has a large width to generate «clock pulse». When the crankshaft rotates, the grooves of the phonic wheel change the magnetic field of the sensor, thus creating an inductive voltage pulse. Based on the pulse length of the 58th slot, the system recognizes the moment when the crank angle began to count and allows the ECM to determine the position of the crankshaft at any time. The ECM uses this data to generate the timing of the ignition and injection pulses.

Withdrawal

1. Disable «-» battery wire.

2. Remove the crankshaft position sensor connector (TFR) from the frame bracket.

3. Remove wire ties if necessary.

4. Remove the mounting bolt of the CKP sensor.

5. Remove the SKR sensor.

Installation

1. Install the CKP sensor with the mounting bolt. Tighten the crankshaft position sensor mounting bolt to 6.5 Nm.

2. Connect the CKP sensor connector.

3. Secure the wire with zip ties.

4. Connect «-» battery wire.