AEM 30-3510 Infinity Plug & Play Harnesses - BMW 2001-2006 E46 M3 - Manual (Page 5)

2001–2006 BMW E46 M3 5
© 2014 AEM Performance Electronics
The gray Deutsch 12P DTM “Auxiliary”
connector (shown below) is used to
adapt many common ancillary inputs and
outputs easily. Included in the kit are a
DTM 12P mating connector, 12 DTM
terminals, and a DTM 12P wedgelock. If
used, these components will need to be
terminated by the installer or end user
with 16
– 22awg wire (not included). Note:
the pin numbering is molded into the
connector, as shown.
Below is a description of each of the
available input/output found in the BMW
specific “Auxiliary” connector.
Available I/O Typical Use Notes Component Wiring
Fuel Press This is used for monitoring
fuel pressure input to the
Infinity. It can also be used
to increase or decrease
injector fuel pulse to
compensate for a failing
fuel pump. Typical electronic fuel
injection fuel pressure
varies 30
–100psi.
AEM carries 0 –5V
fuel pressure
sensors (sold
separately).
This w ire goes
directly to the signal
w ire of the pressure
sensor.
Air Tem p Air temperature is typically
used for fuel and ignition
timing correction. The S54 comes
standard w ith a MAF
sensor w hich has an
integrated intake air
temperature sensor.
This w ire is run in
parallel w ith the stock
sensor. This means if
an aftermarket sensor
is to be w ired using this
pin, the factory MAF
sensor must be
disconnected or else
the signal w ill be
skew ed drastically. AEM carries air
temperature sensors
(sold separately).
How ever, the Infinity
can accept any
thermistor sensor
and can be
calibrated in the
Infinity Tuner
softw are. Intake air temp
sensors have tw o
w ires w ith no polarity.
Sensor Ground Isolated ground for inputs. This is not the same as
a pow er ground or
chassis ground. This is shared for
the Fuel Press, Air
Tem p, MAP
(Manifold Press),
Ethanol Sensor,
etc. This should be w ired
to the ground pin of
the follow ing: Fuel
Press, Air Tem p,
MAP, and Ethanol
Sensor.
5V Reference 5 volt supply for the
follow ing aux inputs. When measured w ith a
voltmeter, it is normal to
not measure exactly
5V. This is shared for
the Fuel Press,
MAP (Manifold
Press), and
Ethanol Sensor
inputs. This should be w ired
to the voltage
reference pin of the
follow ing: Fuel
Press, MAP, and
Ethanol Sensor.