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owners manual Mini Cooper
owners manual Mini Cooper - year of production: 1961, 1962, 1963, 1964, 1965, 1966, 1967, 1968, 1969, 1970, 1971, 1972, 1973, 1974, 1975, 1976, 1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000 - Mini Cooper workshop manual EN
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from owners manual to the vehicle Mini Cooper, year of production 1961 - 2000:
ENGINEMANAGEMENTSYSTEM-MEMS
BASICIGNITIONTIMING
Crankshaftposition sensor Camshaftpositionsensor
Thespeedandpositionoftheengineis detected byThecamshaftposition sensor has two functions. The
the crankshaft position (CKP) sensor which is boltedfirst is to enable the ECM to run a sequential fuelling
to, and projects through, the engine adaptor platemode.Thesecondistomeasuretheactualcam
adjacent to the flywheel. period, this measurement is achieved using teeth on
the camshaft to indicate when the valve opens and
TheCKPsensorisaninductivesensorconsistingofcloses.
abracket mounted body containing a coil and a
permanentmagnetwhichprovidesamagneticfield.If the camshaft position sensor fails when the engine
TheCKPsensorissituatedsothatanairgapexistsis running, the engine will continue to run normally in
betweenit and the flywheel. Air gap distance issequential fuelling mode. If the sensor fails before
critical for correct operation. the engine is started, the engine will start but run at
areducedrevlimit in comparison to the normal rev
Theflywheel incorporates a reluctor ring whichlimit of 6500 rpm. Camshaft position sensor failure
consists of 32 poles spaced at 10° intervals, with 4can be identified using TestBook.
missing poles at 30°,60°, 210° and 250°. The
missing poles inform the ECM when to operate the
groups of injectors. When the flywheel rotates, as a
pole passes the CKP sensor it disturbs the magnetic
field inducing a voltage pulse in the coil. This pulse
is transmitted to the ECM.
Bycalculating the number of pulses that occur within
agiven time, the ECM can determine the engine
speed. This is a primary input necessary to make
the engine run.
REVISED:12/96 DESCRIPTIONANDOPERATION 3
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year of production from: 1961
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Mini Cooper workshop manual
pages 106 - 112
Mini Cooper workshop manual
page 109 / 372
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