Manuals through 2025 now available!
Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.
LEMON is the spiritual successor to CHARM, I recommend you try it!
Link:
lemon-manuals.la or
lemon-manuals.org.ua
(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)
Or, hide this message:
temporarily or
permanently
High Resolution Signal (256X)
The high resolution signal is an optical device that generates 64 equally spaced pulses per cylinder combustion stroke from the slotted disc mounted on the injection pump timing cam ring. The pulses are counted by the
PCM and are used for measuring angular pump displacement. Fuel is metered by using the angular indication. The timing is measured by counting the angular pulses between the pump cam signal and the
crankshaft position sensor signal.