Page 19 of 21 – AEM 30-6821 Series 2 Plug & Play EMS User Manual
Page 19
Page 19 of 21
Pin
2004 STI 2.5L / 2005-2006 STI 2.5L
AEM EMS
30-6820
EMS
I/O
EMS pin description
C1
---
Injector 6
Out
Available, can be used for additional injectors (1.5A max)
C2
---
Injector 5
Out
Available, can be used for additional injectors (1.5A max)
C3
Fuel Injector #4
Injector 4
Out
PnP for Injector 4 (Peak & Hold 4A / 1A driver)
C4
Fuel Injector #3
Injector 3
Out
PnP for Injector 3 (Peak & Hold 4A / 1A driver)
C5
Fuel Injector #2
Injector 2
Out
PnP for Injector 2 (Peak & Hold 4A / 1A driver)
C6
Fuel Injector #1
Injector 1
Out
PnP for Injector 1 (Peak & Hold 4A / 1A driver)
C7
Main switch
Main Switch
In
Dedicated, ETC system input
C8
Brake Switch 2
---
Not Used
C9
Brake Switch 1
Switch #2
In
Available, switch should connect to GND when closed
C10
Resume / Accel switch
---
Not Used
C11
Set / Coast switch
Set Switch
In
Dedicated, ETC system input
C12
Fuel Temperature Sensor signal
EGT #1
In
Available, jumper set for 0-5V input
C13
Intake Air Temperature sensor signal
AIT
In
PnP for Air Intake Temp sensor, RTD type thermistor
C14
Engine Coolant Temperature sensor
Coolant
In
PnP for Coolant Temp sensor, RTD type thermistor
C15
Accelerator Pedal Position sensor
Power
Accelerator Pedal +5V
reference
Out
Dedicated, reference power to accelerator pedal
C16
Electronic Throttle control Power
Supply
+5V Sensor reference
Out
Dedicated, sensor reference power
C17
Accelerator Pedal Position sensor Main
Accelerator Pedal signal 1
In
Dedicated, main 0-5V signal from accelerator pedal
C18
Electronic Throttle control Main
TPS / Electronic Throttle signal
1
In
Dedicated, main 0-5V signal from throttle motor
C19
---
---
Not Used
C20
Fuel Level Sensor
---
Not Used
C21
Fuel Tank Pressure Sensor signal
---
Not Used
C22
Manifold Absolute Pressure sensor
signal
MAP
In
PnP for Manifold Pressure sensor
C23
Mass Air Flow sensor Signal
MAF
In
Available, 0-5V MAF input signal
C24
--
Knock 2
In
Dedicated, software
– configurable knock filter circuit
C25
Knock Sensor Signal
Knock 1
In
Dedicated, software
– configurable knock filter circuit
C26
Tumble Generator Valve position
sensor LH
ADCR14
In
PnP for TGV, 0-5V input
C27
Tumble Generator Valve position
sensor RH
ADCR11
In
PnP for TGV, 0-5V input
C28
Accelerator Pedal Position sensor Sub
Accelerator Pedal signal 2
In
Dedicated, secondary 0-5V signal from accelerator pedal
C29
Electronic Throttle control Sub
Electronic Throttle signal 2
Out
Dedicated, secondary 0-5V signal from throttle motor
C30
---
---
Not Used
C31
Mass Air Flow sensor GND
Sensor Ground
Out
Dedicated, sensors only, connects to pin A4, C35,
C32
Mass Air Flow sensor Shield
Power Ground
Out
Dedicated, also A34,B1, B4,B12,B31, C33,D1,D2,D7,D31
C33
Knock Sensor Shield
Power Ground
Out
Dedicated, also A34,B1, B4,B12,B31,C32,D1,D2,D7,D31
C34
Accelerator Pedal Position sensor GND
Accelerator Pedal Ground
Out
Dedicated, ground to accelerator pedal
C35
GND (sensor)
Sensor Ground
Out
Dedicated, sensors only, connects to pin A4, C31,
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
18
19
20
21
22
23
Connector D
Connector C
Connector B
Connector A
Wire View Of AEM EMS
29
32
30
31
28
17
24
25
26
27
33
34
17 16 15 14 13 12 11 10
31
23
35 34
26
27
32
21
22
20
30
7
6
5
3
4
2
1
8
9
28
29
18
19
24
25
33
8
9
10
11
12
13
14
15
16
18
28
27
22
32
34
25
26
24 23
30
31
29
20
21
19
6
5
4
3
2
1
7
17
35
33
8
9
10
11
12
13
14
15
16
17
18
26
31
22
28
30
25 24
23
27
20
21
19
7
6
5
4
3
2
1
29