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CLAAS MetaDiag 2007 Update 2016 is a crucial software tool for diagnosing issues in CLAAS agricultural machinery. It enhances efficiency and supports maintenance activities through advanced features and user-friendly design. This update includes improvements in diagnostic capabilities, compatibility, and installation processes. Designed for easy use, it is vital for technicians managing heavy machinery and trucks, ensuring optimal performance and reduced downtime.
CLAAS MetaDiag 2007 Update 2016
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Cummins ISB CM550 (1990-94) Fault Code: 234 PID: 190 SPN: 190 FMI: 0 Engine Overspeed Circuit

Circuit Description
The engine speed sensor provides engine speed information to the electronic control module (ECM). The sensor must be powered up by +5 VDC to operate.
The sensor generates its signals by sensing the movement of target teeth cast into a tone wheel that is mounted to the crankshaft. The tone wheel has 35 teeth and a gap where the 36th tooth would be placed. This missing tooth indicates that cylinder No. 1 (and No. 6) is at top dead center.

Component Location
The engine speed sensor is located on the intake side of the engine block, at crankshaft level, between cylinders No. 4 and No. 5.

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