AEM Series 2 Plug Play EMS 306101 User Manual

  
  ADVANCED ENGINE MANAGEMENT INC. 2205 126th Street Unit A    Hawthorne, CA. 90250 Phone: (310) 484-2322 Fax: (310) 484-0152 http://www.aemelectronics.com Instruction Part Number: 10-6101 (instructions published Aug 2010) 
 2010 Advanced Engine Management, Inc. 
  
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Installation Instructions for: 
EMS P/N 30-6101 
1993-1997 Toyota Supra non-turbo 
1993-1997 Lexus SC300/GS300 
 
WARNING: 
! 
This installation is not for the tuning novice nor the PC illiterate! 
Use this...

Page 2 of 13 This product is legal in California for racing vehicles only and should never be used on public highways. 
Thank you for purchasing an AEM Engine Management System.  
 
The AEM Engine Management System (EMS) is the result of extensive development on a wide 
variety of cars. Each system is engineered for the particular application. The AEM EMS differs 
from all others in several ways. The EMS is a standalone system that completely replaces the 
factory ECU and features unique Plug and Play...

Page 3 of 13 This product is legal in California for racing vehicles only and should never be used on public highways. 
 
Read and understand these instructions BEFORE attempting to install this product. 
 
1) Install AEMTuner software onto your PC  
The latest version of the AEMTuner software can be downloaded from the ‘Current 
AEMTuner Software & Discussion’ section of the AEM Performance Electronics forums. 
Series 2 units are not supported by the older AEMPro tuning software.  
 
2) Remove the Stock...

Page 4 of 13 This product is legal in California for racing vehicles only and should never be used on public highways. 
4) Wiring Accessories to the EMS: 
Please  follow  this  suggested  wiring  diagram  when  adding  accessories  such  as  UEGO 
gauges,  MAP  sensors,  IAT  sensors, or  switches  for  use  with  the  EMS. Signals  marked 
‘tapped’  should  be  spliced  onto  the  existing  wire  without  disconnecting  the  original 
circuit. All other signals should intercept the wire, disconnecting...

Page 5 of 13 This product is legal in California for racing vehicles only and should never be used on public highways. 
 
6) Troubleshooting an engine that will not start 
a) Double-check all the basics first… engines need air, fuel, compression, and a correctly-
timed  spark  event.  If  any  of  these  are  lacking,  we  suggest  checking  simple  things  first. 
Depending  on the  symptoms,  it may  be  best to  inspect fuses,  sufficient battery  voltage, 
properly  mated  wiring  connectors,  spark...

Page 6 of 13 This product is legal in California for racing vehicles only and should never be used on public highways. 
Application Notes for EMS P/N 30-6101 
1993-1997 Supra, Lexus GS300, Lexus SC300 
Make: Toyota  Spare Injector Drivers: Inj 7, Pin 70B 
Model: Supra/SC300/GS300  Spare Injector Drivers: Inj 8, Pin A36 
Years Covered: 1993-1997  Spare Injector Drivers: Inj 9, Pin 74B (EVAP wire) 
Engine Displacement: 3.0L  Spare Injector Drivers: Inj 10, Pin 75B(EGR wire) 
Engine Configuration: Inline 6...

Page 7 of 13 This product is legal in California for racing vehicles only and should never be used on public highways. 
Primary Load Sensor 
AEM recommends installing an aftermarket MAP sensor for vehicles that will be turbocharged, 
please see the wiring diagram on page 3 and use the startup calibration that includes ‘AEM 
3.5Bar MAP’ in the filename. 
 
The frequency-type Volume Airflow Meter found on 1993-1995 vehicles is not supported. If the 
vehicle will remain naturally aspirated, please use the...

Page 8 of 13 This product is legal in California for racing vehicles only and should never be used on public highways. 
 
 
Fuel Pump Control 
As supplied from Toyota, the OEM ECU interfaces with a fuel pump ECU to control the speed, 
high or low, of the fuel pump based on load.  The AEM EMS has the ability to replicate this 
functionality; however it is configured in the Startup Calibration to run the fuel pump at high 
speed at all times. 
 
The EMS Output COIL8 (Pin 22A) is used to send a 5V signal...

Page 9 of 13 This product is legal in California for racing vehicles only and should never be used on public highways. 
Connection Diagram for EMS P/N 30-6101   
Pin# 93-97 Supra/Lexus  2JZ-GE AEM P/N 30-6101 I/O Availability  & Notes 
1A Ignition Switch (+12V when key on) Main Relay circuit Input Dedicated, activates Switch 1 input  
2A Vehicle Speed Signal – from Odo/Trip meter T3 (Vehicle Speed) Input PnP for Vehicle Speed signal  
3A Kickdown switch  Switch 3 Input Available, switch must connect to...

Page 10 of 13 This product is legal in California for racing vehicles only and should never be used on public highways. 
Connection Diagram for EMS P/N 30-6101 
Pin# 93-97 Supra/Lexus  2JZ-GE AEM P/N 30-6101 I/O Availability  & Notes 
1B --- Timing Ground Output Dedicated 
2B --- EGT 1 Input Jumper set for 0-5V input  (100kΩ pull-up) 
3B VSS Ground Timing Ground Output Dedicated 
4B E11 EGT 2 Input Jumper set for 0-5V input  (100kΩ pull-up) 
5B Cam Sensor 2 (NE2) Ground --- ---   Not Used 
6B --- Timing...