Pinouts SFi
EDM P3X (D14A3) and P3Y (D14A4)
On this page the OBD (OBD2a?) sheme of the Sfi (Simplified Fuel injection) engines are presented EDM (Europen Domestic Market) style. Some connections are different from car to car. Those are marked grey. These pinouts are very alike pinouts that used for certain D16 engines in Australia and certain D15 engines in the Middle East. The exact specs of these engines are unknown to me. However, these pinouts may be helpful for more people. Note that the connectors are the same as the A and D connector from the OBD1 ECU’s. However, the numbering has changed to OBD2a style.
D14A3 / D14A4
pinout
Nomenclature:
ACC - A/C relay
ACS - A/C switch
ALTC - Alternator relay, for control purposes, not
present on all ECU’s
ALTF - Alternator switch
BKSW- Brake switch, for control purposes, not present
on all ECU’s
ECT - Engine coolant temperature
ELIMA- Electric
load detection, not present on all ECU’s
FANC - Fan relay, for control purposes, not present on
all ECU’s
FLR - Fuel
relay
IACV - Idle air
control valve, controls the 3 wire type IACV valve, (N)egative and (P)ositive
control
IAT - Intake
air temperature
IGPLS- Ignition
pulses, 1 is always present, 2 can be ignored
IGP - Battery
feed, only active when key is turned
IGR - Engine
speed
IMO - Checks
IMO code of the key and activates FLR if correct
INJ - Injector,
the numbers refer to the pair of cylinders connected (1 is on the side with the
belts)
LG - Ground
for battery circuit
MAP - Manifold
absolute pressure
MIL - Motor
indication light, this one gives the control engine light (CEL) signal
PCS - Control
solenoid, this one is for the small black cylindric valve on the back of the IM
PG - Ground
for battery circuit
PSP. - Power
steering switch, not present on all ECU’s
O2S - Oxygen
sensor (lambda sensor) signal
SCS - Service
connector switch, checks if the SCS connector is hot wired (for reading engine
error codes)
SG - Ground
for 5V circuit, 1 is for the MAP sensor, 2 is for the other sensors
STS - Starter
switch
TDC - Top dead
centre
TPS - Throttle
position signal
TXD. - Diagnostic connector, communication signal to
the 3 wire connector next to the SCS connector
VBU - Back up
battery feed, always active (unless battery is removed)
VCC - 5V feed,
1 is for the MAP sensor, 2 is for the other sensors
VSS - Vehicle
speed sensor
Please, send any questions and/or remarks to me.
Dodo Bizar
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