MoTeC M84 - Manual (Page 40)

38 Initial Starting Procedure MoTeC
Test the Sensors
Before starting the engine, test that all sensors are giving sensible readings
by viewing their values on the ECU Manager : View screen. Vary the sensor
readings if possible to check for correct operation.
Check that the Throttle Position Sensor varies smoothly from 0 to 100% when
moved from fully closed to fully open. Note that the TPHI and TPLO setup
parameters must have been set correctly for correct operation of the Throttle
Position sensor.
The MAP sensor should read barometric pressure when the engine is stopped
(approximately 100 to 102 kPa at sea level depending on the day).
The Engine Temp and Air Temp sensors must give correct readings.
Test the Ignition
Use the ECU Manager : Ignition Test (in the Utilities menu) to ensure that
the Ignition System is functioning correctly.
Notes
• Some special ignition systems do not work in the Ignition Test screen. e.g.
Mazda Series 4 and 5 and other direct fire ignition systems.
• If the Ignition System is wired via the Fuel Pump relay then the ignition test
will not work unless this relay is activated.
• It will be necessary to place a spark plug on the lead from the ignition coil if
the ignition system uses a distributor.
Test the Injectors
Use the ECU Manager : Injector Test (in the Utilities menu) to ensure that
all injectors are working and that they are wired in the correct firing order for
sequential operation.
WARNING: Ensure that the fuel pump is off during this test.
Initial Cranking
Crank the engine without fuel pressure and check the RPM reading.
Check that the RPM reading is sensible, if the RPM is too high or too low or is
erratic then the Setup may be incorrect or there may be a problem with the
REF sensor signal. If there is no RPM reading then the REF sensor is not
working.