Haltech E6X Manual DOS Version - Manual (Page 65)

E6X Manual
65
SECTION2 Tuning The Engine
CHAPTER 6 STARTING THE ENGINE
Once the ECU is installed and the set-up has been completed it is time to try to start the
engine. Before cranking the engine there are a few things that need to be done. Make sure
that the ECU is powered (ignition on) and the Haltech Software is online. Go to the Engine
Data Page to check that the ECU is communicating properly, and that the sensors are reading
correctly. Check again that the set-up information is correct.
6.1 Calibrating the Throttle Position Sensor
The throttle sensor must be calibrated so that the ECU knows the start and stop positions of
the sensor. First, set the idle throttle opening using the idle-adjust screw. If the required
opening for idle is not known, make an estimate but keep in mind that this may be the reason
for poor idle later on, and further adjustment may be needed. Choose the "calibrate throttle"
option from the options menu and follow the instructions on the screen.
Finally test the throttle calibration by opening the engine data page checking that when the
throttle is closed the throttle position reads “0%” and when the throttle is opened it reads
“100%”. If this test fails try recalibrating the throttle. If you continue to have problems refer
to the troubleshooting guide in the appendix.
6.2 Checking the Trigger
It is a good idea to check that the ECU is receiving a reliable trigger signal. Disable the
injector outputs in the Fuel Set-up page to cut all fuel delivery to the injectors. The engine
should then be cranked over on the starter. The engine speed is displayed on the engine data
page and should read about 100 to 300 rpm. If the engine speed is zero or is erratic then there
is a problem with the trigger set-up, check for these problems and rectify any faults found. If
you continue to have problems refer to the troubleshooting guide in the appendix.
6.3 Checking the Base Timing
The ECU uses an engine position reference taken from a cam angle sensor or crank angle
sensor. This allows the ECU to calculate ignition timing and fuel events. If the trigger angle
is wrong then the ECU cannot function correctly. To ensure that this trigger angle is correct a
base timing test is carried out. The E6X has a “Lock Timing” setting that allows the user to
program the computer to cause all ignition events to occur at a constant angle regardless of
timing information in the ignition maps.
The Lock Timing can be set between -5° to +25° Before Top Dead Centre (BTDC)).
The Lock timing setting is accessed through the ignition set-up.
To check the base timing you should now start the engine with the Timing Lock “on” and set
to an angle that allows the user to accurately measure the ignition timing with a stroboscopic
timing light. Crank the engine and check for spark (easily checked with a timing light). Now
crank the engine and look for the timing mark with the timing light (ensure you have the