FT500 SFI / FT500LITE SFI
42
Sensors and actuators
wire Color
4-wire O2 sensor
3-wire O2 sensor
1-wire
Black
Signal Output
Signal Output
Sinal
white (2 wires)
Switched 12V and ground (connect one wire onto the 12V and the other to ground – there is
no polarity)
Not featured
Gray
Battery’s negative terminal
Not featured
Not featured
As a general rule, if there are two wires with the same color, one is the switched 12V and the other is the ground. After connecting the O2
sensor to the ECU, the O2 sensor input must be set up as guides chapter 15.5
16-way connector rear view
GM engines: Chevrolet / Delphi
N°: 17108187 / ICD00124
Pin #1: Yellow #1
Pin #2:
3
Yellow #
Pin #3:
2
Yellow #
Pin #4:
4
Yellow #
15 13 11 9 7 5 3 1
16 14 12 10 8 6 4 2
2 * * 2 * *
1 * 1 *
3 * * * 3 * * *
4 * * * * 4 * * * *
1
2
3
4
15 13 11 9 7 5 3 1
16 14 12 10 8 6 4 2
VW engines: Magneti Marelli
Nº: 40430102 / 40439102
Pin #1: Yellow #2
Pin #2: Yellow #1
Pin #3: Yellow #3
Pin #4: Yellow #4
4
3
2
1
2 * * 2
1 * 1 *
3 * * * 3 * * *
4 * * * * 4 * * * *
16-way connector rear view
VW step motor - Magneti Marelli
GM step motor - Delphi
IMPORTANT NOTE:
Step motor is calibrated every time the ECU is
turned on, so, before cranking the engine, it is
recommended to wait about 2s after turning
the ignition switch on. If this procedure is
not respected, the engine may be revved up
unwittingly during the step motor calibration,
coming back to normal within seconds.
12.8 Step motor – idle speed
Its control is done through the four yellow outputs of the 16-way
connector, also used for electronic throttle control. After selecting
the idle speed control as step motor the four yellow outputs are
automatically set up as “step motor” on the harness connection table.
Below are some known step motor connections.
If your step motor is different from the ones listed here, do what follows:
1. Put a tester on the 200 Ohms range;
2. Measure the step motor actuators until you find a resistance of
approximately 50 Ohms. That’s one pair of coils;
3. Connect yellow #1 and yellow #3 to a pair of coils and yellow
#2 and yellow #4 to the other pair.;
4. If the step motor remains fully opened after the calibration, change
yellow #1 by yellow #3 position.
FT500 / FT500LITE step motor control is compatible with the great
majority of actuators nowadays.
Usually, with this simple test you’re able to make the step motor work
normally.
