FT500 SFI / FT500LITE SFI
16
Getting to know the ECU
On page 6 are information regarding the engine RPM signal readings.
Below are some common erros and possible causes:
Crank trigger error: gap detected at the wrong spot
- it detected
the gap (missing teeth) in the wrong place; it can also happen with a
trigger wheel without missing tooth when there is a cam sync signal
in the wrong place. Also occurs in engines with a very light flywheel
that accelerates and decelerates quickly during compression strokes
at engine startup and running.
Crank trigger error: wrong number of teeth
- number of teeth is
different on the crank trigger wheel than what is set at ECU. Electrical
noise can cause a reading of a “ghost” tooth, for example.
Crank trigger error: missed tooth reading
- the ECU detected less
teeth then it should have. Also happens in engines with a very light
flywheel that accelerate and decelerate very fast during compression
strokes at engine startup and running.
Crank trigger error: abnormal acceleration
- tooth error detection.
Usually caused by signal noise.
Cam sync sensor: signal noise
- cam sync signal detected in the
wrong spot. Typically this error is caused when the ECU detects noise
in the cam sync sensor signal or when the cam trigger wheel has
more than one tooth.
ATTENTION
when the 2-step and 3-step are set to activate
by speed, its operation can be checked through
the page 1 of the Diagnostic Panel, not through
page 2, since you are not using an analog input
(white wire) to switch
Diagnostic panel labels
Input or output is configured, enabled and working properly.
Input or output is configured and disabled.
Input or output has not been set up.
Input or output is set up, but there is an abnormal behavior.
Diagnostic 2/6
4,994 V
4,995 V
0,094 V
4,995 V
4,509 V
4,998 V
0,663 V
0,000 V
0,000 V
0,021 V
0,000 V
1: O2 sensor #1
2: Two-Step
3: Air conditioning
4: Oil pressure
5: Engine temperature
6: Fuel pressure
7: Air temperature
8: Avaliable
9: Avaliable
10: MAP
11: TPS
bar
°C
bar
°C
bar
%
White wires: Inputs
1,10
Disab.
Disab.
9,98
1
9,98
10
0
0
0,84
0,00
Test time based features
Hold the 2-step button for the
test
1000
+
-
RPM
0,00
+
-
MAP
90,0
+
-
TPS
70,0
+
-
T.engine
70,0
+
-
T.air
Desat.
Ativ.
Tempo (s): 0,00
6.6 Test time based features
This menu allows to run the output test controlled by time. To start this
test the engine must be turned off and the ignition switch on (12V).
The test starts when the 2-step button is pressed and lasts as long
as he keeps pushing.
While the test is performed the RPM values, MAP, TPS and temperatures
can be changed in real time.
