Examination
To check, remove the appropriate plug of wires coming from the common engine wiring harness. If necessary, you must first remove the intake manifold, because. sometimes the plug is hard to reach.
Use an ohmmeter to measure the resistance at the respective sensor plug contacts and, if necessary, replace the sensor.
Resistance value at +20°С:
- crankshaft pulse generator: 1.3 kOhm;
- recognition sensor (identification) cylinders: between contacts 1 and 2 - no more than 1 Ohm;
- between contacts 2 and 3 - at least 10 mΩ.
Crankshaft pulse generator
Withdrawal
Remove the sensor plug (generator) impulses.
Unscrew the oil line from the VANOS actuator and close it with a clean plug.
Remove the engine lifting eye, noting the position of the wire (1).
Remove the sensor wire from the guides. To do this, loosen the clamps and remove the sheath (casing) wires.
Unscrew the screw at the crankshaft gear and remove the generator (sensor) along with the lid.
Installation
Insert the sensor and tighten its fastening screw to 5 Nm.
Check the distance from the sensor to the gear using a flat feeler gauge. It should be 0.7-1.3 mm.
Insert the wire into the guides so that it does not rub against the belt. Connect the plug.
Install the engine lifting eye.
Screw the oil line onto the VANOS actuator using new O-rings.
Cylinder recognition sensor
Withdrawal
Remove the top cover (casing) engine.
The sensor is hard to get to. When removing, first disconnect the plug from the VANOS actuator solenoid valve and unscrew the valve.
Unscrew the oil line from the VANOS actuator and plug it with a clean plug.
Loosen the sensor bolt and remove the sensor.
Disconnect the sensor plug.
Installation
Insert sensor. Pay attention to the correct fit of the rubber seal on the sensor, replace the seal if necessary.
Tighten the sensor bolt to 5 Nm.
Connect the plug and route the sensor wire.
Tighten the oil line with new O-rings on the VANOS actuator to a torque of 30 Nm.
Screw the solenoid valve into the VANOS block with a torque of 30 Nm, after replacing, if necessary, the damaged gasket. Connect the plug to the solenoid valve.
Install the engine top cover.