AEM 30-6040 Series 2 Plug & Play EMS User Manual
Page 9
Page 9 of 11
Pin #
OBD1 Honda / Acura
AEM EMS 30-6040
I/O
Availability
D1
Voltage Back Up
Permanent +12V
Input
Dedicated
D2
Brake Switch (Except Prelude)
EGT 2
Input
Avail, jumper set for 0-5V Input
D3
Knock 1
Knock 1
Input
Dedicated
D4
Service Check Connector
Injector 9
Input
Avail, Injector Gnd, 1.5A max
D5
---
EGT 1
Input
Avail, jumper set for 0-5V Input
D6
VTEC Pressure Switch
Switch 4
Input
Avail, Switched Input
D7
Data Link Connector
High Side Driver 1 Output
Avail, same as pin A4
D8
---
MAF
Input
Avail, 0-5 Volt Input, 100k pull up
D9
Alternator FR Signal
EGT 3
Input
Avail, jumper set for 0-5V Input
D10
Electronic Load Detector
EGT 4
Input
Avail, jumper set for 0-5V Input
D11
Throttle Position Sensor
TPS
Input
Dedicated
D12
EGR Valve Lift Sensor (Accord/Prelude Only)
ADCR11
Input
Avail, 0-5 Volt Input, 100k pull up
D13
Engine Coolant Sensor
Coolant
Input
Dedicated, 2.2k pull up
D14
Primary 02 Sensor
Lambda 1
Input
Available, 0-5V Lambda 1 input
D15
Inlet Air Temp Sensor
AIT
Input
Dedicated, 2.2k pull up
D16
Secondary 02 Sensor
Lambda 2
Input
Available, 0-5V Lambda 2 input
D17
Map Sensor
MAP
Input
Dedicated
D18
Shift Up Indicator Light (D15 only)
IDLE #1
Output
Avail, Ground / +12V, 1.5A max
D19
Sensor Voltage 1
+5V Sensor
Output
Dedicated
D20
Sensor Voltage 2
+5V Sensor
Output
Dedicated
D21
Sensor Ground 1
Sensor Ground
Output
Dedicated, sensors only
D22
Sensor Ground 2
Sensor Ground
Output
Dedicated, sensors only