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3.1.2 Measuring the ”2-lost” Angle
Turn the engine so that cylinder 1 is at TDC. Measure the angle between the
center of the CKP and the trailing edge of the 2-lost (or 1 lost) window. See
picture 3-1. Each tooth on the trigger wheel is 3 degrees and each window is
3 degrees. Make a note of the angle, as you will need to enter it into NIRA rk
later.
Picture 3-1. Measuring the TDC to ”2-lost” angle.
3.2 Cam Position Sensor (CMP)
Since the fuel injection and ignition is controlled sequentially with NIRA i7x, a
signal that tells NIRA i7x the engine’s phase in the combustion cycle is
necessary. NIRA i7x thus requires that the engine has a Cam Position Sensor.
This signal is used to synchronize the fuel injection and ignition with opening
and closing of the intake valves during start. Your NIRA i7x dealer will advise
you on an appropriate CMP sensor. Both hall sensors and inductive sensors
are compatible with NIRA i7x.
In the wiring harness there’s a shielded wire marked “CAM” with two wires
and one shield. The same wire should be used for both hall sensor and
inductive sensor. Note that different sensor types connect differently in the
NIRA i7x connector.
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