GF07.61-P-3017KE ME Engine Speed Signal, Function

GF07.61-P-3017KE ME Engine Speed Signal, Function
- up to model year 08

Component Identification:

Based on the signals from the crankshaft position sensor (L5) the short circuit-proof engine speed signal TNA is generated in the ME control unit (N3/10) and forwarded to other control units via the CAN data bus.

The teeth on the increment wheel cause the turning crankshaft to generate an alternating voltage in the crankshaft position sensor. During this operation, each tooth generates an alternating voltage signal. No voltage is generated as a result of the gap created by 2 missing teeth.

The engine speed signal TNA is a square-wave signal with a constant on/off ratio of 6 pulses per engine revolution (a 30° CA) and a maximum current of approx. 20 mA.

If the signal from the crankshaft position sensor fails the signal from the left intake camshaft Hall sensor (B6/4) or right exhaust camshaft Hall sensor (B6/7) is used as a substitute (for limp-home).