IsReg2001NC-0 Rev. 051011-2
18-30
How to check what cut injector wiring to use
There are different types of cut injector wiring to match with the injection control unit:
SA144,
SA144INV, SA144J, SA144JINV, SA144SJ, SA144E, AS144U, SA143 and SA143INV.
NOTE: the cut injector wiring must be ordered separately since it is not included in the
kit.
To know what type of cut injector wiring to use, you must first check, on the petrol injector connec
-
tor, on what PIN the injector positive is connected.
To identify which of the two wires is positive, do the following:
- detach all the connectors from the injectors;
- set a multimeter to measure DC voltage;
- put the negative probe to ground;
- put the positive probe into one of the two pins of the injector wiring;
- insert the key into the ignition and immediately check the multimeter reading.
If the multimeter reads +12 volts, that pin is the positive.
WARNING: the in12 volt on some cars might be timed; therefore the reading might
disappear a few seconds after the ignition is turned on. Check the polarity of all injector
wiring connectors to make sure that they are all polarised in the same way.
SA144 - SA144INV for 4-8 cylinder cars (For 8 cyl. use 2 types of wiring).
Wiring types
SA144
and
SA144INV
are equipped with “BOSCH” type connectors to con-
nect directly to the petrol injectors. To know whether to use model
SA144
or
SA144INV
,
check the polarisation on the petrol injector wiring.
SA144
: use this if the positive of the petrol injectors is on PIN A and the negative is on
PIN B. Refer to figure 1.
SA144INV
: use this if the positive of the petrol injectors is on PIN B and the negative is
on PIN A. Refer to figure 1.
SA144J - SA144JINV- SA144SJ for 4-8 cylinder cars (For 8 cyl. use 2 types of wiring).
Wiring types
SA144J
and
SA144JINV
are equipped with “JAPAN” type con-
nectors to connect directly to the petrol injectors. To know whether to use mod-
el
SA144J
or
SA144JINV
, check the polarisation on the petrol injector wiring.
SA144J: use this if the positive of the petrol injectors is on PIN A and the negative is on
PIN B. Refer to figure 2.
SA144JINV
: use this if the positive of the petrol injectors is on PIN B and the negative
is on PIN A. Refer to figure 2.
Wiring type
SA144SJ
is equipped with JAPAN type pins and extended wiring for installa-
tion on SUBARU cars with a BOXER engine. It is used
ONLY
if the positive of the petrol
injectors is on PIN B and the negative is on PIN A. Refer to figure 2.
SA144E
Wiring type
SA144E
is equipped with a single 6-pin connector. It can be used on some
types of Fiat, Citroen or Peugeot cars that use the same connector on the injector wiring.
To install and to know on what cars it can be used, follow the instructions included with
the wiring.
SA143 - SA143INV for 3-5-6 cylinder cars (For 6 cyl. use 2 types of wiring).
Wiring types
SA143
and
SA143INV
are equipped with “BOSCH” type connectors to connect
directly on the petrol injectors. To know whether to use model
SA143
or
SA143INV
, check the
polarisation on the petrol injector wiring.
SA143
: use this if the positive of the petrol injectors is on PIN A and the negative is on PIN B.
Refer to figure 1.
SA143INV
: use this if the positive of the petrol injectors is on PIN B and the negative is on PIN A.
Refer to figure 1.
Cut injector wiring description
English
Fig. 1
B
Fig. 2
B
A
TO BE CONTINUED >>>
A
