KMS MA-5 manual
Version 5.1
41
3.4.2
Output test
With this test function all final stages can be tested
separately without the engine running. The choice is
between continuous and pulsating testing, except for
the coil test (pulsating only). When the coil outputs are
being tested, the tacho output will also emit a pulse
every 8 ms.
The option
“Injector flow test” enables the injector
output to be tested. A pulsating test lasts 1 minute,
during which the injectors are activated for periods of
10 ms, alternating with rest periods of 10 ms.
During a continuous test the injectors are continuously
active for 1 minute. The fuel pump is switched on 10
seconds before the test is started, to ensure that the
system is at operating pressure.
Warning:
When testing the injectors, do not allow the engine to flood
– make sure the
fuel pump is switched off!
3.4.3
Crankshaft sensor test
The crankshaft sensor function is used to check
whether the crankshaft position sensor registers the
correct number of teeth. The number of teeth shown
should be 60 for a 60-2 toothed wheel and 36 for a 36-1 version.
If another reading is shown, check whether the sensor is correctly connected and properly mounted.
Electronic interference can occur when the leads are not properly shielded or positioned close to the
coil and spark leads. A sensor taking a reading from an external cog may have metal particles
attached to it as a result of grinding or drilling. If a failure only starts occurring at higher engine speeds,
it is likely that it is caused by sensor vibrations.
Warning:
Crankshaft position sensors have a highly sensitive core. If the sensor is
dropped, the core may break as a result of which the sensor will give a weak
or incorrect signal.
Electronic interference can occur when the leads are not properly shielded or
positioned close to the coil and spark leads.
