AEM Performance Electronics CD-7 - Device Pinout

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Device Pinout
Pin
Name
Function
1
12V Battery Power (+)
Primary ignition/battery power input
2
Battery Ground (-)
Primary ignition/battery ground input
3
AEMnet+ / CANH
AEMnet / CAN bus output
4
AEMnet- / CANL
AEMnet / CAN bus Output
5
Analog 1
Temperature / thermistor input, 2200 Ohm 5V pull-up
6
Analog 2
Temperature / thermistor input, 2200 Ohm 5V pull-up
7
Analog 3
0-5V Analog input, 100k Ohm 5V pull-up
8
Analog 4
0-5V Analog input, 100k Ohm 5V pull-up
9
Tachometer
Engine speed input (negative coil terminal) 12V pull-up
10
Fuel Level
0 - 250 Ohm fuel level sensor input
11
Sensor Ground
Dedicated sensor ground
12
5V Sensor Power
5V sensor reference power output
Analog Inputs 1 - 2
These inputs have a 2200 Ohm 5V pull-up resistor and are suitable for two-wire thermistor temperature sensors. It is
not recommended to connect these inputs to pre-existing/OEM sensors that are already connected to a factory ECU
or logging device. Please refer to the table below for connection examples.
New / Added
Sensors
5V Sensor
Power
Sensor
Signal
Sensor
Ground
Examples
Two wire
temperature
û
ü
ü
Intake, coolant/oil temperature, etc
ü = Connect û =Don't connect ! = Read Notes
CAN Output
The measured resistance will be output via CAN and will have to be scaled to temperature in the receiving device. A
thermistor's resistance varies non-linearly with temperature and thus the receiving device will likely require a look-up
table to properly log or display temperature. The AEM CD series of dashes have this capability; please refer to the
appropriate documentation.