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section
M 3
22 1098/1098S - M.Y. 2007 - edition 00
Injection - ignition system
Rpm/timing sensor
This sensor (1) is of the inductive type: it faces the timing gear and is capable of reading the 46 teeth and the 2-tooth gap.
The signal from the pickup on the timing driveshaft driving gear is used by the ECU to determine the engine speed and as a timing
reference point.
Notes
To check these components for faults, use the DDS tester and follow the instructions given under the heading “Guided
diagnosis”, Sect. D 5.
For instructions on how to renew the sensor and check the air gap, see the chapter “Flywheel/alternator” (Sect. N 8).
1
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