Haltech E6A - Manual (Page 48)

48
Chapter 5
Starting the Engine
There are a few things that need to be done before the engine should be started. 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 Identification, the Fuel Setup and the Ignition Setup are all set
correctly. In particular, check the No. Cylinders, Ign Div/By, Load Sensor and Injection Mode
parameters. If any of these are incorrect, the engine may run, but proper tuning will be
impossible.
5.1 Calibrating the Throttle Position Sensor
The throttle sensor must be calibrated so that the ECU knows the start and stop positions of
the sensor. 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.
5.2 Checking the trigger
It is a good idea to check that the E6A is receiving a reliable trigger signal. Remove the 20A
fuse from the fuse block. This will prevent the fuel pump from running and the engine from
starting. The engine should then be cranked over on the starter and the rpm displayed on the
engine data page should read about 100 to 300 rpm. If the engine speed is zero or is erratic
then refer to the section in Chapter 1 [1.3.14] regarding trigger setup. If the trigger is
operating correctly then replace the 20A fuel pump fuse.
5.3 Checking the Base Timing
The E6A uses a timing reference taken from either the cam angle sensor or flywheel sensor.
This give the E6A the reference on which to position all ignition timing. If the timing is wrong
then the E6A cannot function correctly. To ensure that this base timing is set correctly the E6A
has a TIMING CHECK FLAG
When the Timing Check Flag is set, the ignition timing is forced to 10° Before Top Dead
Center (BTDC). This is regardless of whatever ignition timing Maps are currently in the E6A.
To enable this flag, press
¦s ¦s
from the Sub-Menu select the Ignition Setup. Using the arrow
keys move to the Timing Lock option. If it reads Timing Check On, the flag is enabled. If it
reads Timing Check Off, then the flag is disabled. The flag is toggled by pressing
© ©
. If the
Timing Check is on, the ECU will lock the timing to where it believes 10° advance to be.
To check the base timing you should now start the engine with the Timing Check on. The
engine should now start and run although with only 10° of ignition advance the idle speed may
be lower than usual.