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Old 17th May 2022, 17:56   #15
SD1too
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Rover 75 2.5 Connoisseur Auto (1999) Dealer launch model.

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Quote:
Originally Posted by Kampo View Post
Is the crankshaft pos sensor the one that engages revs ...? What gives the reading in the rev counter pulse to start with?
The rev. counter is driven by the ECM (Engine Control Module) via the CAN bus. The crankshaft position sensor signal enables the ECM to determine the engine speed and therefore drive the rev. counter.

Does that help?

Simon
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