AEM Series 2 Plug Play EMS 306600 User Manual

							
  
Installation Instructions for: 
EMS P/N 30-6600 
89-94 Nissan 240SX S13 KA24DE 
91-94 Nissan Sentra B13 GA16DE 
90-94 Nissan Pulsar GTi-R N14 SR20DET 
91-93 Nissan NX B13 GA16DE 
93-94 Nissan Altima U13 KA24DE 
89-95 Nissan Bluebird U13 SR20DET 
91-93 Infiniti G20 P10 SR20DE 
 
WARNING: 
,! 
This installation is not for the t uning novice nor the PC illiterate! 
Use this system with 
EXTREME caution! The AEM EMS System 
allows for total flexi bility in engine tuning. Misuse of this 
product can destroy your engine! If  you are not well versed in 
engine dynamics and the tuning of management systems or are 
not PC literate, please do not atte mpt the installation. Refer the 
installation to a AEM trained tuning shop or call 800-423-0046 
for technical assistance. You s hould also visit the AEM EMS 
Tech Forum at http://www.aempower.com 
 
NOTE: AEM holds no responsibility for any engine damage that 
results from the misuse of this product!
 
 
This product is legal in California fo r racing vehicles only and should never 
be used on public highways. 
 
Note:  Part number 30-6600 supersedes and  replaces p/n 30-1600 and 30-1600U 
 
Vehicle Series I EMS Series II EMS 
1989-1994 Nissan 240SX S13 (KA24DE) 1600/U 6600 
1991-1994 Nissan Sentra B13 (GA16DE) 1600/U 6600 
1990-1994 Nissan Pulsar GTi-R N14 (SR20DET) 1600/U 6600 
1991-1993 Nissan NX B13 (GA16DE) 1600/U 6600 
1993-1994 Nissan Altima U13 (KA24DE) 1600/U 6600 
1989-1995 Nissan Bluebird U13 (SR20DET) 1600/U 6600 
1991-1993 Infiniti G20 P10 (SR20DE) 1600/U 6600 
 
 
ADVANCED ENGINE MANAGEMENT INC. 
2205 126
th Street Unit A    Hawthorne, CA. 90250 
Phone: (310) 484-2322 Fax: (310) 484-0152 
http://www.aempower.com 
Instruction Part Number: 10-6600 
© 2010 Advanced Engine Management, Inc.   
 
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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 enginee red for the particular application. The AEM 
EMS differs from all others in several  ways. The EMS is a stand alone system, which 
completely replaces the factory ECU and  features unique Plug and Play Technology, 
which means that each system is configured  especially for your make and model of car 
without any jumper harnesses. There is no need to  modify your factory wiring harness and 
in most cases your car may be retur ned to stock in a matter of minutes.  
 
For stock and slightly modified vehicles, the supplied startup calibrations are configured to 
work with OEM sensors, providing a solid st arting point for beginner tuning. For more 
heavily modified cars, the EMS can be reconfi gured to utilize aftermarket sensors and has 
many spare inputs and outputs allowing the elimin ation of add-on rev-limiters, boost 
controllers, nitrous controllers, fuel computers,  etc. It also includes a configurable onboard 
1MB data logger that can re cord any 16 EMS parameters  at up to 250 samples per 
second. Every EMS comes with all functions  installed and activated; there is no need to 
purchase options or upgrades to unlo ck the full potential of your unit. 
 
The installation of the AEM EMS on the supported vehicles  uses the stock sensors and 
actuators. After installing t he AEMTuner software, the startu p calibration will be saved to 
the following folder on your PC:  
C:\Program Files\AEM\AEM Tuner\Calibrations\Nissan\  
Multiple calibrations may be supplied for each  EMS; additional details of the test vehicle 
used to generate each calibration can be found in  the Calibration Notes section for that 
file.  
 
Please visit the AEM Performance Electroni cs Forum at http://www.aempower.com and 
register.  We always post t he most current strategy rele ase, PC Software and startup 
calibrations online. On the forum, you can fi nd and share many helpful hints/tips to make 
your EMS perform its best.  
 
TUNING NOTES AND WARNING:  
While the supplied startup calibration  may be a good starting point and can save 
considerable time and money, it will not replac e the need to tune the EMS for your specific 
application. AEM startup calibrations are not  intended to be driven aggressively before 
tuning. We strongly recommend that every  EMS be tuned by someone who is already 
familiar with the AEM software and has successf ully tuned vehicles using an AEM EMS. 
Most people make mistakes as part of the l earning process; be warned that using your 
vehicle as a learning platform can damage y our engine, your vehicle, and your EMS. 
 
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Read and understand these instructions BEFORE attempting to install this product.  
1)  Install AEMTuner software onto your PC  
The latest version of the AEMTuner so ftware can be downloaded from the AEMTuner 
section of the AEM Perform ance Electronics forums. Seri es 2 units are not supported 
by the older AEMPro tuning software.  
 
2)  Change Cam/Crank Angle Sensor: AEM trigger disc MUST be used   
On Nissans, discrepancies have been observed  in the OEM cam/crank angle signals 
between model years and/or trim  levels. To avoid confusion the Series 2 EMS does not 
support the OEM Nissan trigger pattern. A r eplacement trigger disc is now included 
with every Nissan EMS and must be installed  before attempting to start the engine. An 
AEM trigger disc is supplied with eac h 30-6600 EMS which fits KA, GA, and SR 
sensors. Please consult the foll owing instructions supplement, which will be installed to 
the C:\Program Files\AEM\AEM Tuner\Instructions folder: 
‘10-6600-C for EMS - 30-66XX supplement-  CAS trigger install KA, GA, and SR 
engines.PDF’   
 
3)  Remove the Stock Engine Control Unit 
a) Access the stock Engine Control Unit (ECU).  The location of the ECU on the Nissan 
240SX vehicles is behind the kick-panel on the passenger si de of the vehicle. All 
other Nissan/Infiniti contro l units are located on the floor behind the center console 
accessed from the passenger side. 
b) Carefully disconnect the wiring harness from  the ECU. Avoid excessive stress or 
pulling on the wires, as this may damage th e wiring harness. Some factory ECUs 
use a bolt to retain the factory connectors, and it must be removed before the 
harness can be disconnected.  There may be more than one connector, and they 
must all be removed without  damage to work properly with the AEM ECU. Do not 
cut any of the wires in the factor y wiring harness to remove them.  
c) Remove the fasteners securing the ECU to  the car body, and set them aside. Do 
not destroy or discard the fact ory ECU, as it can be reinstalled easily for street use 
and troubleshooting. 
 
4)  Install the AEM Engine Management System 
a) Plug the factory wiring harness into the AEM  EMS and position it so the wires are 
not pulled tight or stressed in any manner . Secure the EMS with the provided 
Velcro fasteners. 
b) Plug the comms cable into the EMS and into your PC. 
c) Turn the ignition on, but do not  attempt to start the engine.  
d) At the time these instructions were written, new EMS units do not require USB 
drivers to be installed to the PC. 
e) With the AEMTuner software open, select  ECU>>Upload Calibration to upload the 
startup calibration file (.cal)  that most closely matches the vehicle’s configuration to 
be tuned. Check the Notes section of the calibration for more info about the vehicle 
it was configured for. These files  can be found in the following folder:   
C:\Program Files\AEM\AEMTuner\Calibrations\Nissan  
f) Set the throttle range: Select Wizard s>>Set Throttle Range and follow the on-
screen instructions. When finished, check that  the ‘Throttle’ channel never indicates 
less than 0.2% or greater than 99.0%, this  is considered a sensor error and may 
cause some functions including idle f eedback and acceleration fuel to operate 
incorrectly.  
 
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5)  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. Note that wire 
polarity is not important for t he Air Temperature sensor.   
+5V Sensor Power
Switched Input
41 Sensor Ground
IAT Sensor
29 26
AEM EMS 
P/N: 30-6600
Sensor Ground
MAP Signal
35
29 37 Sensor Ground O2 Sensor 1
19
29
Ground Switch 6
Air Temperature Sensor 
P/N: 30-2010
Black (Sensor Ground)Green (MAP Signal)
Red (+5V Sensor Power) Black (Battery or chassis ground)
Red (+12V power, 5A fuse)
AEM UEGO 
P/N: 30-5130
Brown (Analog - signal)
White (0-5V Analog + signal)
Pink (Switched +12V Power)
MAP Sensor 
P/N: 30-2130-50
 
6)  Ready to begin tuning the vehicle. 
a) Before starting the engine, ve rify that the fuel pump runs for a couple of seconds 
when the key is turned on and there is suffi cient pressure at the fuel rail.  
If a MAP sensor is installed, check that the Engine Load indicates something near 
atmospheric pressure (approximately 101kPa  or 0 PSI at sea level) with the key on 
and engine off. Press the throttle and verify t hat the ‘Throttle’ channel responds but 
the Engine Load channel continues to meas ure atmospheric pressure correctly.  
b) Start the engine and make whatever adjustments may be  needed to sustain a safe 
and reasonably smooth idle. Verify the ignition timing: Select  Wizards>>Ignition 
Timing Sync  from the  pull-down menu.  Click the ‘ Lock Ignition Timing’ checkbox 
and set the timing to a safe and convenient  value (for instance, 10 degrees BTDC). 
Use a timing light and compare the physical timing numbers to the timing value you 
selected. Use the Sync Adjustment Increase/Decrease  buttons to make the 
physical reading match the ti ming number you selected. 
 
Crankshaft timing marks are not labeled fo r some vehicles. Consult the factory 
service manual for more information. T he diagram below shows marks for the 
240SX:   
 
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c) Note: This calibration needs to be properly tuned before driving the vehicle. It is 
intended for racing vehicles and may not oper ate smoothly at idle or part-throttle. 
NEVER TUNE THE VEHICLE WHILE DRIVING
 
 
7) Troubleshooting an engine  that will not start 
a) Double-check all the basics first… engi nes 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 connec tors, spark using a timing light or by 
removing the spark plug, wiring continuity  tests, measure ECU pinout voltages, 
replace recently-added or  untested components with known-good spares. Check 
that all EMS sensor inputs  measure realistic temperature and/or pressure values. 
  
b) If the EMS is not firing the coils or injectors  at all, open the Start tab and look for the 
‘Stat Sync’d’ channel to turn  ON when cranking. This indicates that the EMS has 
detected the expected cam and crank signals;   if Stat Sync’d does not turn on, 
monitor the Crank Tooth Period and T2PER  channels which indicate the time 
between pulses on the Crank  and T2 (Cam) signals. Both of these channels should 
respond when the engine is cr anking, if either signal is not being detected or 
measuring an incorrect number of pulses pe r engine cycle the EMS will not fire the 
coils or injectors. 
 
c) With the engine not running,  if the Engine Load changes when the throttle is 
pressed this usually indicates that there is  a problem with the MAP sensor wiring or 
software calibration (when the EMS detects  that the MAP Volts are above or below 
the min/max limits it will run in a fail safe mode using the TPS-to-Load table to 
generate an artificial Engine  Load signal using the Throttle input). This may allow 
the engine to sputter or start but  not continue running properly.  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Page 5 of 12  
						

							
 
 
Application Notes for EMS P/N 30-6600 
KA24DE, GA16DE, SR20DE, SR20DET 
 
Make: Nissan/Infiniti  Spare Injector Drivers: Inj 5, Pin 23 
Model: 240SX, Sentra, Pulsar GTiR, 
NX, Altima, Bluebird, G20  Spare Injector Drivers: Inj 6, Pin 105 
Years Covered: 1989-1995  Spare In jector Drivers: Inj 7, Pin 14 
Engine Displacement: 1.6L, 2.0L, 2.4L  Spare Injector Drivers: Inj 8, Pin 114 
Engine Configuration: Inline 4    
Firing Order: 1-3-4-2  Spare Coil Drivers: Coil 2, Pin 7 
N/A, S/C or T/C: N/A, T/C  Spare Coil Drivers: Coil 3, Pin 5 
Load Sensor Type: 0-5V MAF  Spare Coil Drivers: Coil 4, Pin 25 
     
Number of Coils: 1   (Distributor)  Boost Solenoid: PW2, Pin 111 
     
   EGT #1 Location: Pin 8 
   EGT #2 Location: Pin 15 
Ignition driver type: 0-5V Falling Edge trigger  EGT #3 Location: Pin 44 
Number of Injectors: 4 (P&H drivers: Inj 1-4)  EGT #4 Location: Pin 115 
Factory Injectors: 185cc - 444cc    
Factory Inj Resistors: Pulsar GTiR only    
Injection Mode: Sequential  Spare 0-5V Input: MAP, Pin 35 
Knock Sensors used: 1  Spare 0-5V Input: ADCR11, Pin 33 
Lambda Sensors used: 1    
Idle Motor Type: Duty-controlled solenoid  Spare Low Side Driver: LS2, Pin 45 
Main Relay Control: Yes (not user programmable)  Spare Low Side Driver: LS4, Pin 102 
Crank Pickup Type: Optical  Spare Low Side Driver: LS5, Pin 10 
Crank Teeth/Cycle: 24 (AEM trigger disc)   Spare Low Side Driver: LS9, Pin 106 
Cam Pickup Type: Optical  Check Engine Light: LS10 , Pin 24 
** Cam Teeth/Cycle: 1 (AEM trigger disc)    
Transmissions Offered: Manual/Automatic  Spare High Side Driver: HS1, Pin 28 
Trans Supported: Manual only    
Drive Options: FWD, RWD, AWD  Spare Switch Input*: Switch 2, Pin 43 
Supplied Connectors: N/A    
AEM extension/patch 
harness 30-2995  A/C Switch Input*: Switch 6, Pin 41 
 
 
Wire View of AEM EMS 
 
 
WARNING:      
*All switch input pins must c onnect to ground; the switch s hould not provide 12V power to 
the EMS because that will not be  detected as on or off.  
Page 6 of 12  
						

							
Engine Wiring Harnesses, ‘swapped’ engine installations 
Many Nissan wiring harnesses have been found  to contain significant differences between 
model years and/or trim levels. Likely diffe rences include: Crank signal, Cam signal, 
Ignition switch wiring (the Ignition switch input  controls the Main Relay output), injector and 
coil destinations. Official documentation for these  vehicles was not offered in English, so it 
would be very wise to double-c heck the pinout destinations for these circuits. This is 
especially true if the vehicle contains a ‘swapped’ engine or if  the wiring harness has been 
cut, spliced, soldered, tapped or modified in any manner. It is t he user’s responsibility to 
check that the wiring on the v ehicle matches the pinout chart below. AEM will not be held 
responsible for loss or damage that can occur if  the EMS is installed in a vehicle in which 
the wiring harness does not matc h the AEM-supplied pinout chart!  
 
The function of several pins have been changed  from the original 30-1600 EMS, please 
see the pinout chart for more info. 
 
Primary Load Sensor, EMS Fuel Strategy   
 The factory MAF (mass air fl ow) sensor(s) can be removed  to help decrease intake air 
restriction; the EMS can be c onfigured to use a MAP sensor to determine engine load.  
It is recommended to use a 3.5 bar MAP  sensor or higher (P/N 30-2130-50).  
The factory Mass Air Flow sensor can be used  as the primary load input for the AEM EMS 
if desired. Please check the Notes section of  each calibration for more info about the 
vehicle setup and fuel stra tegy that calibration was configured to use.  
 
EMS Fuel Map, Boost Fuel Trim Table 
Some of the 30-6600 maps provided utilize the  “Boost Fuel Trim Table” to provide a 1:1 
fuel compensation above and belo w atmospheric pressure. In the startup calibration, the 
“ Boost Fuel Trim Table” is configured to provide twice  as much fuel when the manifold 
pressure is twice as high and half the fuel when  the manifold pressure is half as high; this 
should help simplify the tuning process for di fferent vacuum and boost levels. Notice the 
values in the main  “Fuel Map” do not change above 100 kPa (0  psi boost), the fuel 
correction is being made by the  “Boost Fuel Trim Table.”  
Note: the “Boost Fuel Trim Table”  must be adjusted if a different MAP sensor is installed or 
if the Load breakpoints are adjusted. The Boost  Fuel Trim value should be set to -90 at 
10kPa, 0 at 100 kPa, +100 at 200 kPa, +200 at 300 kPa, etc… 
 
Peak and Hold Injector Drivers 
Injectors 1-4 include Peak (4 amps) and Hold (1  amp) injector drivers. These drivers may 
be used with peak and hold or saturated type injectors. Some fa ctory wiring harnesses 
may contain a resistor pack to prevent ex cessive current when using low-impedance 
injectors with the stock ECU. With the 30-6600 installed, us ers can elect to remove and 
bypass the OEM resistor pack (if one was inst alled) for more precise control of low-
impedance injectors.  
 
Please note that the injector response time  will be different with and without the factory 
injector resistor pack. If  the OEM resistor pack has been removed and bypassed, please 
use the correct battery offset wizard for your  injectors. Most battery offset wizards will 
specify  if they are int ended for use without a resistor pack.  
 
 
 
 
Page 7 of 12  
						

							
Connection Diagram for EMS P/N 30-6600 
PnP Means the Plug and Play system comes with this configured for proper operation of this 
device. Is still available for  reassignment by the end user. 
Available Means the function is not curr ently allocated and is available for use 
Dedicated Means the location is fixed and cant be changed 
 
Pin  
1989-1994 Nissan 240SX S14 KA24DE 1991-1994 Nissan Sentra B13 GA16DE 1990-1994 Nissan Pulsar GTi-R N14 SR20DET 1991-1993 Nissan NX B13 GA16DE 1993-1994 Nissan Altima U13 KA24DE 1989-1995 Nissan Bluebird U13 SR20DET 1991-1993 Infiniti G20 P10 SR20DE 
AEM EMS 30-6600 I/O Notes 
1 Ignition Signal Coil 1 Output PnP for Coil 1, 0-5V falling edge trigger 
2 Tachometer Signal Low Side 7 Output PnP for Tachometer 
3 Ignition Check --- --- Not Used 
4 ECCS Relay control, Ignition Relay control Main Relay (control) Output Dedicated, EMS activates relay with switched GND 
5 --- Coil 3 Output Available Coil 3, 0-5V falling edge trigger 
6 ECCS Ground Power Ground Input Dedicated 
7 Data Link Connector Coil 2 Output Available Coil 2, 0-5V falling edge trigger 
8 EGR Sensor (Except 89-90 Non CA 240SX and 
SR20DET) EGT 1 Input Available, jumper set for 0-5V Input 
9 Cooling Fan Relay Low Side 3  + Low Side 12 Output PnP for Cooling Fan,  can be activated by LS3 or LS12 output 
10 Cooling Fan High Speed (A/T 2.0L only) Low Side 5 Output Available, Switched Ground, 1.5A max 
11 Air Conditioner Relay Low Side 6 Output Available, Switched Ground, 1.5A max 
12 Swirl Control Valve (89-90 240SX Only)/VTC Solenoid  (1.6L only) CAN1H Input Dedicated. CAN high side 
13 ECCS Ground Power Ground Input Dedicated 
14 Diagnostics Clock Injector 7 Output Available, Switched Ground, 1.5A Max 
 
 
 
 
 
Wire View of AEM EMS 
  
 
   
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Connection Diagram for EMS P/N 30-6600 
Pin  
1989-1994 Nissan 240SX S14 KA24DE 1991-1994 Nissan Sentra B13 GA16DE 1990-1994 Nissan Pulsar GTi-R N14 SR20DET 1991-1993 Nissan NX B13 GA16DE 1993-1994 Nissan Altima U13 KA24DE 1989-1995 Nissan Bluebird U13 SR20DET 1991-1993 Infiniti G20 P10 SR20DE 
AEM EMS 30-6600 I/O Notes 
15 Data Link Connector EGT 2 Input Available, jumper set for 0-5V input 
16 Mass Air Flow Sensor MAF Input PnP for MAF Sensor 
17 Mass Air Flow Ground Power Ground Input Dedicated 
18 Engine Coolant Temperature Sensor Coolant Input PnP for Coolant Temp Sensor 
19 Oxygen Sensor O2 #1 Input Dedicated, 0-5V input signal 
20 Throttle Position Sensor TPS Input PnP for Throttle Position Sensor 
21 Sensor Ground Sensor Ground Output Dedicated 
22 Crankshaft Reference Signal Cam (T2)  Input Dedicated, must use AEM replacement trigger disc.  Connects to pin 30 
23 Diagnostics check (SR20 only) Injector 5 Output Available, Switched Ground, 1.5A Max 
24 Malfunction Indicator Light Low Side 10 Output Available, Switched Ground, 1.5A Max 
25 Swirl Control Valve (91-94 240SX only) Coil 4 Output Available Coil 4, 0-5V falling edge trigger 
26 Air Temp Sensor (Late 89 and all 90 240SX) AIT Input Available, AIT Sensor Input 
27 Knock Sensor (Except 89-90 240SX & 1.6L) Knock 1 Input PnP for Knock Sensor 
28 Throttle Signal Output (A/T only) High Side 1 Output Available, Switched +12V, 1.5A Max 
29 Sensor Ground Sensor Ground Output Dedicated 
30 Crankshaft Reference Signal  Cam (T2) Input Dedicated, must use AEM replacement trigger disc.  Connects to pin 22 
 
 
 
 
 
 
Wire View of AEM EMS 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Page 9 of 12  
						

							
 
Connection Diagram for EMS P/N 30-6600 
1989-1994 Nissan 240SX S14 KA24DE 1991-1994 Nissan Sentra B13 GA16DE 1990-1994 Nissan Pulsar GTi-R N14 SR20DET 1991-1993 Nissan NX B13 GA16DE 1993-1994 Nissan Altima U13 KA24DE 1989-1995 Nissan Bluebird U13 SR20DET 
Pin  
1991-1993 Infiniti G20 P10 SR20DE 
AEM EMS 30-6600 I/O Notes 
31 Crankshaft Position Sensor Signal Crank Signal Input Dedicated, must use AEM replacement trigger disc.  Connects to pin 40 
32 Vehicle Speed Vehicle Speed Input PnP for Vehicle Speed Sensor 
33 Idle Sw (89-90 240SX)/5th Pos Sw (91-94 240SX) ADCR11 Input Available, 0-5 Volt Input 
34 Start Signal +12V Switched Input Dedicated 
35 Neutral Position Switch MAP Input Available, Manifold Pressure 
36 Ignition Switch Main Relay (input) Input Dedicated, +12V activates Main Relay circuit 
37 Throttle Position Sensor Power +5V Sensor Output Dedicated 
38 Power Supply for ECM +12V Switched Input Dedicated, +12V power when ECCS Relay is on 
39 ECCS Ground Power Ground Input Dedicated 
40 Crankshaft Position Signal Crank Signal Input Dedicated, must use AEM replacement trigger disc. Connects to pin 31 
41 Air Conditioner Switch Switch 6 Input PnP for A/C Switch 
42 4th Position Switch (91-94 240SX only) CAN1L Input Dedicated, CAN low side 
43 Power Steering Oil Pressure Switch Switch 2 Input Available, Switched Input 
44 Idle Switch Positive Side (89-90 240SX);  Rear window defogger (91-94 240SX) EGT 3 Input Available, jumper set for 0-5V Input  
45 Air Conditioner FICD (Except 2.0L);  Position Sw (89-90 240SX) Low Side 2 Output Available, Switched Ground, 1.5A Max 
46 Back-up Power Supply Permanent +12V Input Dedicated, used to store internal log 
47 Power Supply for ECM +12V Switched Input Dedicated, +12V power when ECCS Relay is on 
48 ECCS Ground Power Ground Input Dedicated 
101 Injector 1 Injector 1 Output PnP for Injector 1 (Peak & Hold 4A/1A driver) 
102 Pulse Secondary Air Inj (240SX & 91-93 2.0L only) Low Side 4 Output Available, Switched Ground, 1.5A max 
103 Injector 3 Injector 3 Output PnP for Injector 3 (Peak & Hold 4A/1A driver) 
104 Fuel Pump Relay control Low Side 11 Output PnP for Fuel Pump 
105 EGR Control Solenoid Valve Injector 6 Output Available, Switched Ground, 1.5A max 
106 Pressure Regulator Control Sol (89-90 240SX only) Low Side 9 Output PnP for Fuel Pump 
107 ECCS Ground Power Ground Input Dedicated 
108 ECCS Ground Power Ground Input Dedicated 
109 Back-Up Power Supply Permanent +12V Input Dedicated, used to store internal log 
110 Injector 2 Injector 2 Output PnP for Injector 2 (Peak & Hold 4A/1A driver) 
111 O2 Sensor Heater (91-94 2.0L & 94 1.6L only) PW 2 Output Available, Switched Ground, 1.5 max 
112 Injector 4 Injector 4 Output PnP for Injector 4 (Peak & Hold 4A/1A driver) 
113 Idle Auxiliary Air Control Valve PW 1 Output PnP for Idle Air Control 
114 --- Injector  8 Output Available, Switched Ground, 1.5A max 
115 --- EGT 4 Input Available, jumper set for 0-5V Input 
116 ECCS Ground Power Ground Input Dedicated 
 
Wire View of AEM EMS 
Page 10 of 12