Part 1, Ems-4 installation, Ems-4 basic specifications – AEM 30-6905 Universal Programmable EMS-4 User Manual

Page 7: Wire harness options, Part 1 – ems-4 installation

Page 7 of 279 EMS-4 Install and Tuning Guide_Rev 1.6

Part 1

– EMS-4 Installation

EMS-4 Basic Specifications

EMS-4 Specifications

CPU Core:

16 bit / 40 MHz

Injector Drivers:

4 x Saturated (8 ohm minimum, High Impedance Only)

Coil Drivers:

4 x 0-5V Falling Edge Fire (do not connect directly to coil
primary)

GPIO Pins:

4 x 1.5A Low Side Output / 0-5V Analog Input / Switch Input

4 x 1.5A Low Side Output / 0-5V Analog Input / PWM output

O2 Sensor Input:

1 x 0-5V analog

Timing Sensor Inputs:

1 x VR (mag) Cam Input

1 x VR (mag) Crank Input

1 x Hall VSS Input

1 x Hall Crank Input

1 x Hall Cam Input

Knock Sensor Input

1x Programmable

Throttle Position Input

1 x 0-5V

Manifold Pressure Sensor

1 x 0-5V

Coolant Temperature Sensor

1 x analog

Inlet Air Temperature Sensor

1 x analog

USB

1 x EMS / PC Communication

CAN

1 x Programmable Send / Receive

Sensor Ground

1 x

5 Volt Reference

1 x

Wire Harness Options

EMS-4 with 30-2905-96 Full Harness

EMS-4 with 30-2905-0 Mini Harness